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[PATCH OLK-6.6] mm: try skipping pinned page before unmapping in migration
by Nanyong Sun 17 Dec '25

17 Dec '25

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IDDIIR ----------------------------------------- Racy check if the page is pinned before unmapping to avoid page talbe unmaping and restoring, eventually migration will fail if page is pinned, so skip it at the begining as much as possible, no lock here but the racy window is short. Signed-off-by: Nanyong Sun <sunnanyong(a)huawei.com> --- mm/migrate.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/mm/migrate.c b/mm/migrate.c index 4edd29d9a041..148e55fab012 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1290,6 +1290,14 @@ static int migrate_folio_unmap(new_folio_t get_new_folio, /* Establish migration ptes */ VM_BUG_ON_FOLIO(folio_test_anon(src) && !folio_test_ksm(src) && !anon_vma, src); + + /* + * Racy check here to avoid page table walking and modifications + * as much as possible. + */ + if (unlikely(folio_maybe_dma_pinned(src))) + goto out; + try_to_migrate(src, mode == MIGRATE_ASYNC ? TTU_BATCH_FLUSH : 0); old_page_state |= PAGE_WAS_MAPPED; } @@ -1464,6 +1472,14 @@ static int unmap_and_move_huge_page(new_folio_t get_new_folio, if (folio_mapped(src)) { enum ttu_flags ttu = 0; + /* + * Racy check folio is pinned, try to avoid unnecessary page + * table unmapping and restoring, because the subsequent + * move_to_new_folio will eventually check the reference count. + */ + if (unlikely(folio_maybe_dma_pinned(src))) + goto unlock_put_anon; + if (!folio_test_anon(src)) { /* * In shared mappings, try_to_unmap could potentially -- 2.34.1

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[PATCH openEuler-26.09 000/399] sched_ext
by Zicheng Qu 17 Dec '25

17 Dec '25

Aboorva Devarajan (2): sched_ext: Documentation: Remove mentions of scx_bpf_switch_all sched: Pass correct scheduling policy to __setscheduler_class Alexander Lobakin (1): bitops: make BYTES_TO_BITS() treewide-available Alexei Starovoitov (1): selftests/bpf: modify test_loader that didn't support running bpf_prog_type_syscall programs Andrea Righi (32): sched_ext: fix typo in set_weight() description sched_ext: add CONFIG_DEBUG_INFO_BTF dependency sched_ext: Provide a sysfs enable_seq counter sched_ext: improve WAKE_SYNC behavior for default idle CPU selection sched_ext: Clarify ops.select_cpu() for single-CPU tasks sched_ext: Introduce LLC awareness to the default idle selection policy sched_ext: Introduce NUMA awareness to the default idle selection policy sched_ext: Do not enable LLC/NUMA optimizations when domains overlap sched_ext: Fix incorrect use of bitwise AND MAINTAINERS: add self as reviewer for sched_ext sched_ext: idle: Refresh idle masks during idle-to-idle transitions sched_ext: Use the NUMA scheduling domain for NUMA optimizations sched_ext: idle: use assign_cpu() to update the idle cpumask sched_ext: idle: clarify comments sched_ext: idle: introduce check_builtin_idle_enabled() helper sched_ext: idle: small CPU iteration refactoring sched_ext: update scx_bpf_dsq_insert() doc for SCX_DSQ_LOCAL_ON sched_ext: Include remaining task time slice in error state dump sched_ext: Include task weight in the error state dump selftests/sched_ext: Fix enum resolution tools/sched_ext: Add helper to check task migration state sched_ext: selftests/dsp_local_on: Fix selftest on UP systems sched_ext: Fix lock imbalance in dispatch_to_local_dsq() selftests/sched_ext: Fix exit selftest hang on UP sched_ext: Move built-in idle CPU selection policy to a separate file sched_ext: Track currently locked rq sched_ext: Make scx_locked_rq() inline sched_ext: Fix missing rq lock in scx_bpf_cpuperf_set() sched/ext: Fix invalid task state transitions on class switch sched_ext: Make scx_kf_allowed_if_unlocked() available outside ext.c sched_ext: Remove duplicate BTF_ID_FLAGS definitions sched_ext: Fix rq lock state in hotplug ops Andrii Nakryiko (7): bpf: extract iterator argument type and name validation logic bpf: allow passing struct bpf_iter_<type> as kfunc arguments selftests/bpf: test passing iterator to a kfunc bpf: Emit global subprog name in verifier logs bpf: Validate global subprogs lazily selftests/bpf: Add lazy global subprog validation tests selftests/bpf: validate eliminated global subprog is not freplaceable Arnaldo Carvalho de Melo (1): tools include UAPI: Sync linux/sched.h copy with the kernel sources Atul Kumar Pant (1): sched_ext: Fixes typos in comments Benjamin Tissoires (1): bpf: introduce in_sleepable() helper Bitao Hu (4): genirq: Convert kstat_irqs to a struct genirq: Provide a snapshot mechanism for interrupt statistics watchdog/softlockup: Low-overhead detection of interrupt storm watchdog/softlockup: Report the most frequent interrupts Björn Töpel (1): selftests: sched_ext: Add sched_ext as proper selftest target Breno Leitao (3): rhashtable: Fix potential deadlock by moving schedule_work outside lock sched_ext: Use kvzalloc for large exit_dump allocation sched/ext: Prevent update_locked_rq() calls with NULL rq Changwoo Min (11): sched_ext: Clarify sched_ext_ops table for userland scheduler sched_ext: add a missing rcu_read_lock/unlock pair at scx_select_cpu_dfl() MAINTAINERS: add me as reviewer for sched_ext sched_ext: Replace rq_lock() to raw_spin_rq_lock() in scx_ops_bypass() sched_ext: Relocate scx_enabled() related code sched_ext: Implement scx_bpf_now() sched_ext: Add scx_bpf_now() for BPF scheduler sched_ext: Add time helpers for BPF schedulers sched_ext: Replace bpf_ktime_get_ns() to scx_bpf_now() sched_ext: Use time helpers in BPF schedulers sched_ext: Fix incorrect time delta calculation in time_delta() Christian Brauner (1): file: add take_fd() cleanup helper Christian Loehle (1): sched/fair: Remove stale FREQUENCY_UTIL comment Chuyi Zhou (15): cgroup: Prepare for using css_task_iter_*() in BPF bpf: Introduce css_task open-coded iterator kfuncs bpf: Introduce task open coded iterator kfuncs bpf: Introduce css open-coded iterator kfuncs bpf: teach the verifier to enforce css_iter and task_iter in RCU CS bpf: Let bpf_iter_task_new accept null task ptr selftests/bpf: rename bpf_iter_task.c to bpf_iter_tasks.c selftests/bpf: Add tests for open-coded task and css iter bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg bpf: Relax allowlist for css_task iter selftests/bpf: Add tests for css_task iter combining with cgroup iter selftests/bpf: Add test for using css_task iter in sleepable progs selftests/bpf: get trusted cgrp from bpf_iter__cgroup directly sched_ext: Fix the incorrect bpf_list kfunc API in common.bpf.h. sched_ext: Use SCX_CALL_OP_TASK in task_tick_scx Colin Ian King (1): sched_ext: Fix spelling mistake: "intead" -> "instead" Daniel Xu (3): bpf: btf: Support flags for BTF_SET8 sets bpf: btf: Add BTF_KFUNCS_START/END macro pair bpf: treewide: Annotate BPF kfuncs in BTF Dave Marchevsky (5): bpf: Don't explicitly emit BTF for struct btf_iter_num selftests/bpf: Rename bpf_iter_task_vma.c to bpf_iter_task_vmas.c bpf: Introduce task_vma open-coded iterator kfuncs selftests/bpf: Add tests for open-coded task_vma iter bpf: Add __bpf_kfunc_{start,end}_defs macros David Vernet (15): bpf: Add ability to pin bpf timer to calling CPU selftests/bpf: Test pinning bpf timer to a core sched_ext: Implement runnable task stall watchdog sched_ext: Print sched_ext info when dumping stack sched_ext: Implement SCX_KICK_WAIT sched_ext: Implement sched_ext_ops.cpu_acquire/release() sched_ext: Add selftests bpf: Load vmlinux btf for any struct_ops map sched_ext: Make scx_bpf_cpuperf_set() @cpu arg signed scx: Allow calling sleepable kfuncs from BPF_PROG_TYPE_SYSCALL scx/selftests: Verify we can call create_dsq from prog_run sched_ext: Remove unnecessary cpu_relax() scx: Fix exit selftest to use custom DSQ scx: Fix raciness in scx_ops_bypass() scx: Fix maximal BPF selftest prog Dawei Li (1): genirq: Deduplicate interrupt descriptor initialization Devaansh Kumar (1): sched_ext: selftests: Fix grammar in tests description Devaansh-Kumar (1): sched_ext: Documentation: Update instructions for running example schedulers Geliang Tang (1): bpf, btf: Check btf for register_bpf_struct_ops Henry Huang (2): sched_ext: initialize kit->cursor.flags sched_ext: keep running prev when prev->scx.slice != 0 Herbert Xu (1): rhashtable: Fix rhashtable_try_insert test Honglei Wang (3): sched_ext: use correct function name in pick_task_scx() warning message sched_ext: Add __weak to fix the build errors sched_ext: switch class when preempted by higher priority scheduler Hongyan Xia (1): sched/ext: Add BPF function to fetch rq Hou Tao (7): bpf: Free dynamically allocated bits in bpf_iter_bits_destroy() bpf: Add bpf_mem_alloc_check_size() helper bpf: Check the validity of nr_words in bpf_iter_bits_new() bpf: Use __u64 to save the bits in bits iterator selftests/bpf: Add three test cases for bits_iter selftests/bpf: Use -4095 as the bad address for bits iterator selftests/bpf: Export map_update_retriable() Ihor Solodrai (2): selftests/sched_ext: add order-only dependency of runner.o on BPFOBJ selftests/sched_ext: fix build after renames in sched_ext API Ilpo Järvinen (1): <linux/cleanup.h>: Allow the passing of both iomem and non-iomem pointers to no_free_ptr() Ingo Molnar (3): sched/syscalls: Split out kernel/sched/syscalls.c from kernel/sched/core.c sched/fair: Rename check_preempt_wakeup() to check_preempt_wakeup_fair() sched/fair: Rename check_preempt_curr() to wakeup_preempt() Jake Hillion (1): sched_ext: create_dsq: Return -EEXIST on duplicate request Jiapeng Chong (1): sched_ext: Fixes incorrect type in bpf_scx_init() Jiayuan Chen (1): selftests/bpf: Fixes for test_maps test Jiri Olsa (2): bpf: Add missed value to kprobe perf link info bpf: Add cookie to perf_event bpf_link_info records Kui-Feng Lee (28): bpf: refactory struct_ops type initialization to a function. bpf: get type information with BTF_ID_LIST bpf, net: introduce bpf_struct_ops_desc. bpf: add struct_ops_tab to btf. bpf: make struct_ops_map support btfs other than btf_vmlinux. bpf: pass btf object id in bpf_map_info. bpf: lookup struct_ops types from a given module BTF. bpf: pass attached BTF to the bpf_struct_ops subsystem bpf: hold module refcnt in bpf_struct_ops map creation and prog verification. bpf: validate value_type bpf, net: switch to dynamic registration libbpf: Find correct module BTFs for struct_ops maps and progs. bpf: export btf_ctx_access to modules. selftests/bpf: test case for register_bpf_struct_ops(). bpf: Fix error checks against bpf_get_btf_vmlinux(). bpf: Move __kfunc_param_match_suffix() to btf.c. bpf: Remove an unnecessary check. bpf: add btf pointer to struct bpf_ctx_arg_aux. bpf: Create argument information for nullable arguments. selftests/bpf: Suppress warning message of an unused variable. selftests/bpf: Test PTR_MAYBE_NULL arguments of struct_ops operators. libbpf: Set btf_value_type_id of struct bpf_map for struct_ops. libbpf: Convert st_ops->data to shadow type. bpftool: Generated shadow variables for struct_ops maps. bpftool: Add an example for struct_ops map and shadow type. selftests/bpf: Test if shadow types work correctly. bpf, net: validate struct_ops when updating value. bpf: struct_ops supports more than one page for trampolines. Kumar Kartikeya Dwivedi (4): bpf: Allow calling static subprogs while holding a bpf_spin_lock selftests/bpf: Add test for static subprog call in lock cs bpf: Transfer RCU lock state between subprog calls selftests/bpf: Add tests for RCU lock transfer between subprogs Liang Jie (1): sched_ext: Use sizeof_field for key_len in dsq_hash_params Manu Bretelle (1): sched_ext: define missing cfi stubs for sched_ext Martin KaFai Lau (3): libbpf: Ensure undefined bpf_attr field stays 0 bpf: Reject struct_ops registration that uses module ptr and the module btf_id is missing bpf: Use kallsyms to find the function name of a struct_ops's stub function Matthieu Baerts (1): bpf: fix compilation error without CGROUPS Peter Zijlstra (20): cleanup: Make no_free_ptr() __must_check sched: Simplify set_user_nice() sched: Simplify syscalls sched: Simplify sched_{set,get}affinity() sched: Simplify yield_to() sched: Simplify sched_rr_get_interval() sched: Simplify sched_move_task() sched: Misc cleanups sched/deadline: Move bandwidth accounting into {en,de}queue_dl_entity sched: Allow sched_class::dequeue_task() to fail sched: Unify runtime accounting across classes sched: Use set_next_task(.first) where required sched/fair: Cleanup pick_task_fair() vs throttle sched/fair: Cleanup pick_task_fair()'s curr sched/fair: Unify pick_{,next_}_task_fair() sched: Fixup set_next_task() implementations sched: Split up put_prev_task_balance() sched: Rework pick_next_task() sched: Combine the last put_prev_task() and the first set_next_task() sched: Add put_prev_task(.next) Pu Lehui (1): riscv, bpf: Fix out-of-bounds issue when preparing trampoline image Randy Dunlap (1): sched_ext: fix kernel-doc warnings Shizhao Chen (1): sched_ext: Add option -l in selftest runner to list all available tests Song Liu (8): bpf: Charge modmem for struct_ops trampoline bpf: Let bpf_prog_pack_free handle any pointer bpf: Adjust argument names of arch_prepare_bpf_trampoline() bpf: Add helpers for trampoline image management bpf, x86: Adjust arch_prepare_bpf_trampoline return value bpf: Add arch_bpf_trampoline_size() bpf: Use arch_bpf_trampoline_size x86, bpf: Use bpf_prog_pack for bpf trampoline T.J. Mercier (1): bpf, docs: Fix broken link to renamed bpf_iter_task_vmas.c Tejun Heo (148): sched: Restructure sched_class order sanity checks in sched_init() sched: Allow sched_cgroup_fork() to fail and introduce sched_cancel_fork() sched: Add sched_class->reweight_task() sched: Add sched_class->switching_to() and expose check_class_changing/changed() sched: Factor out cgroup weight conversion functions sched: Factor out update_other_load_avgs() from __update_blocked_others() sched: Add normal_policy() sched_ext: Add boilerplate for extensible scheduler class sched_ext: Implement BPF extensible scheduler class sched_ext: Add scx_simple and scx_example_qmap example schedulers sched_ext: Add sysrq-S which disables the BPF scheduler sched_ext: Allow BPF schedulers to disallow specific tasks from joining SCHED_EXT sched_ext: Print debug dump after an error exit tools/sched_ext: Add scx_show_state.py sched_ext: Implement scx_bpf_kick_cpu() and task preemption support sched_ext: Add a central scheduler which makes all scheduling decisions on one CPU sched_ext: Make watchdog handle ops.dispatch() looping stall sched_ext: Add task state tracking operations sched_ext: Implement tickless support sched_ext: Track tasks that are subjects of the in-flight SCX operation sched_ext: Implement sched_ext_ops.cpu_online/offline() sched_ext: Bypass BPF scheduler while PM events are in progress sched_ext: Implement core-sched support sched_ext: Add vtime-ordered priority queue to dispatch_q's sched_ext: Documentation: scheduler: Document extensible scheduler class sched, sched_ext: Replace scx_next_task_picked() with sched_class->switch_class() cpufreq_schedutil: Refactor sugov_cpu_is_busy() sched_ext: Add cpuperf support sched_ext: Drop tools_clean target from the top-level Makefile sched_ext: Swap argument positions in kcalloc() call to avoid compiler warning sched, sched_ext: Simplify dl_prio() case handling in sched_fork() sched_ext: Account for idle policy when setting p->scx.weight in scx_ops_enable_task() sched_ext: Disallow loading BPF scheduler if isolcpus= domain isolation is in effect sched_ext: Minor cleanups in kernel/sched/ext.h sched, sched_ext: Open code for_balance_class_range() sched, sched_ext: Move some declarations from kernel/sched/ext.h to sched.h sched_ext: Take out ->priq and ->flags from scx_dsq_node sched_ext: Implement DSQ iterator sched_ext/scx_qmap: Add an example usage of DSQ iterator sched_ext: Reimplement scx_bpf_reenqueue_local() sched_ext: Make scx_bpf_reenqueue_local() skip tasks that are being migrated sched: Move struct balance_callback definition upward sched_ext: Unpin and repin rq lock from balance_scx() sched_ext: s/SCX_RQ_BALANCING/SCX_RQ_IN_BALANCE/ and add SCX_RQ_IN_WAKEUP sched_ext: Allow SCX_DSQ_LOCAL_ON for direct dispatches sched_ext/scx_qmap: Pick idle CPU for direct dispatch on !wakeup enqueues sched_ext: Build fix on !CONFIG_STACKTRACE[_SUPPORT] sched_ext: Allow p->scx.disallow only while loading sched_ext: Simplify scx_can_stop_tick() invocation in sched_can_stop_tick() sched_ext: Add scx_enabled() test to @start_class promotion in put_prev_task_balance() sched_ext: Use update_curr_common() in update_curr_scx() sched_ext: Simplify UP support by enabling sched_class->balance() in UP sched_ext: Improve comment on idle_sched_class exception in scx_task_iter_next_locked() sched_ext: Make task_can_run_on_remote_rq() use common task_allowed_on_cpu() sched_ext: Fix unsafe list iteration in process_ddsp_deferred_locals() sched_ext: Make scx_rq_online() also test cpu_active() in addition to SCX_RQ_ONLINE sched_ext: Improve logging around enable/disable sched_ext: Don't use double locking to migrate tasks across CPUs scx_central: Fix smatch checker warning sched_ext: Add missing cfi stub for ops.tick sched_ext: Use task_can_run_on_remote_rq() test in dispatch_to_local_dsq() sched_ext: Use sched_clock_cpu() instead of rq_clock_task() in touch_core_sched() sched_ext: Don't call put_prev_task_scx() before picking the next task sched_ext: Replace SCX_TASK_BAL_KEEP with SCX_RQ_BAL_KEEP sched_ext: Unify regular and core-sched pick task paths sched_ext: Relocate functions in kernel/sched/ext.c sched_ext: Remove switch_class_scx() sched_ext: Remove sched_class->switch_class() sched_ext: TASK_DEAD tasks must be switched out of SCX on ops_disable sched_ext: TASK_DEAD tasks must be switched into SCX on ops_enable sched: Expose css_tg() sched: Make cpu_shares_read_u64() use tg_weight() sched: Introduce CONFIG_GROUP_SCHED_WEIGHT sched_ext: Add cgroup support sched_ext: Add a cgroup scheduler which uses flattened hierarchy sched_ext: Temporarily work around pick_task_scx() being called without balance_scx() sched_ext: Add missing static to scx_has_op[] sched_ext: Add missing static to scx_dump_data sched_ext: Rename scx_kfunc_set_sleepable to unlocked and relocate sched_ext: Refactor consume_remote_task() sched_ext: Make find_dsq_for_dispatch() handle SCX_DSQ_LOCAL_ON sched_ext: Fix processs_ddsp_deferred_locals() by unifying DTL_INVALID handling sched_ext: Restructure dispatch_to_local_dsq() sched_ext: Reorder args for consume_local/remote_task() sched_ext: Move sanity check and dsq_mod_nr() into task_unlink_from_dsq() sched_ext: Move consume_local_task() upward sched_ext: Replace consume_local_task() with move_local_task_to_local_dsq() sched_ext: Compact struct bpf_iter_scx_dsq_kern sched_ext: Implement scx_bpf_dispatch[_vtime]_from_dsq() scx_qmap: Implement highpri boosting sched_ext: Synchronize bypass state changes with rq lock sched_ext: Don't trigger ops.quiescent/runnable() on migrations sched_ext: Fix build when !CONFIG_STACKTRACE sched_ext: Build fix for !CONFIG_SMP sched_ext: Add __COMPAT helpers for features added during v6.12 devel cycle tools/sched_ext: Receive misc updates from SCX repo scx_flatcg: Use a user DSQ for fallback instead of SCX_DSQ_GLOBAL sched_ext: Allow only user DSQs for scx_bpf_consume(), scx_bpf_dsq_nr_queued() and bpf_iter_scx_dsq_new() sched_ext: Relocate find_user_dsq() sched_ext: Split the global DSQ per NUMA node sched_ext: Use shorter slice while bypassing sched_ext: Relocate check_hotplug_seq() call in scx_ops_enable() sched_ext: Remove SCX_OPS_PREPPING sched_ext: Initialize in bypass mode sched_ext: Fix SCX_TASK_INIT -> SCX_TASK_READY transitions in scx_ops_enable() sched_ext: Enable scx_ops_init_task() separately sched_ext: Add scx_cgroup_enabled to gate cgroup operations and fix scx_tg_online() sched_ext: Decouple locks in scx_ops_disable_workfn() sched_ext: Decouple locks in scx_ops_enable() sched_ext: Improve error reporting during loading sched_ext: scx_cgroup_exit() may be called without successful scx_cgroup_init() sched/core: Make select_task_rq() take the pointer to wake_flags instead of value sched/core: Add ENQUEUE_RQ_SELECTED to indicate whether ->select_task_rq() was called sched_ext, scx_qmap: Add and use SCX_ENQ_CPU_SELECTED Revert "sched_ext: Use shorter slice while bypassing" sched_ext: Start schedulers with consistent p->scx.slice values sched_ext: Move scx_buildin_idle_enabled check to scx_bpf_select_cpu_dfl() sched_ext: bypass mode shouldn't depend on ops.select_cpu() sched_ext: Move scx_tasks_lock handling into scx_task_iter helpers sched_ext: Don't hold scx_tasks_lock for too long sched_ext: Make cast_mask() inline sched_ext: Fix enq_last_no_enq_fails selftest sched_ext: Add a missing newline at the end of an error message sched_ext: Update scx_show_state.py to match scx_ops_bypass_depth's new type sched_ext: Handle cases where pick_task_scx() is called without preceding balance_scx() sched_ext: ops.cpu_acquire() should be called with SCX_KF_REST sched_ext: Factor out move_task_between_dsqs() from scx_dispatch_from_dsq() sched_ext: Rename CFI stubs to names that are recognized by BPF sched_ext: Replace set_arg_maybe_null() with __nullable CFI stub tags sched_ext: Avoid live-locking bypass mode switching sched_ext: Enable the ops breather and eject BPF scheduler on softlockup sched_ext: scx_bpf_dispatch_from_dsq_set_*() are allowed from unlocked context sched_ext: Rename scx_bpf_dispatch[_vtime]() to scx_bpf_dsq_insert[_vtime]() sched_ext: Rename scx_bpf_consume() to scx_bpf_dsq_move_to_local() sched_ext: Rename scx_bpf_dispatch[_vtime]_from_dsq*() -> scx_bpf_dsq_move[_vtime]*() sched_ext: Fix invalid irq restore in scx_ops_bypass() sched_ext: Fix dsq_local_on selftest tools/sched_ext: Receive updates from SCX repo sched_ext: selftests/dsp_local_on: Fix sporadic failures sched_ext: Fix incorrect autogroup migration detection sched_ext: Implement auto local dispatching of migration disabled tasks sched_ext: Fix migration disabled handling in targeted dispatches sched_ext: Fix incorrect assumption about migration disabled tasks in task_can_run_on_remote_rq() sched_ext: Fix pick_task_scx() picking non-queued tasks when it's called without balance() sched_ext: Implement SCX_OPS_ALLOW_QUEUED_WAKEUP sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator sched_ext: Make scx_group_set_weight() always update tg->scx.weight sched_ext, sched/core: Don't call scx_group_set_weight() prematurely from sched_create_group() Thomas Gleixner (1): sched/ext: Remove sched_fork() hack Thorsten Blum (1): sched_ext: Use str_enabled_disabled() helper in update_selcpu_topology() Tianchen Ding (1): sched_ext: Use btf_ids to resolve task_struct Vincent Guittot (3): sched/cpufreq: Rework schedutil governor performance estimation sched/fair: Fix frequency selection for non-invariant case sched/fair: Fix sched_can_stop_tick() for fair tasks Vishal Chourasia (2): sched_ext: Add __weak markers to BPF helper function decalarations sched_ext: Fix function pointer type mismatches in BPF selftests Wenyu Huang (1): sched/doc: Update documentation after renames and synchronize Chinese version Yafang Shao (2): bpf: Add bits iterator selftests/bpf: Add selftest for bits iter Yipeng Zou (1): sched_ext: Allow dequeue_task_scx to fail Yiwei Lin (1): sched/fair: Remove unused 'curr' argument from pick_next_entity() Yu Liao (2): sched: Put task_group::idle under CONFIG_GROUP_SCHED_WEIGHT sched: Add dummy version of sched_group_set_idle() Yury Norov (1): cpumask: introduce assign_cpu() macro Zhang Qiao (3): sched_ext: Remove redundant p->nr_cpus_allowed checker sched/ext: Fix unmatch trailing comment of CONFIG_EXT_GROUP_SCHED sched/ext: Use tg_cgroup() to elieminate duplicate code Zhao Mengmeng (1): sched_ext: Replace scx_next_task_picked() with switch_class() in comment Zicheng Qu (25): bpf: Fix kabi for missed in bpf_link_info bpf: Fix kabi for cookie in bpf_link_info bpf: Fix kabi for value_type_btf_obj_fd in union bpf_attr bpf: Fix kabi for struct bpf_verifier_env selftest/bpf: Fix task_vma iter verification error bpf: Fix kabi for btf in struct bpf_ctx_arg_aux bpf: Fix kabi for called and verified in struct bpf_func_info_aux sched: Fix kabi for reweight_task in struct sched_class sched/syscalls: Fix kabi for EXPORT_SYMBOL moved from core.c to syscalls.c sched: Fix kabi for switching_to in struct sched_class sched/fair: Fix kabi for check_preempt_curr and wakeup_preempt in struct sched_class sched: Fix kabi for dequeue_task in struct sched_class sched_ext: Fix kabi for scx in struct task_struct sched_ext: Fix kabi for switch_class in struct sched_class sched: Fix kabi for exec_max in struct sched_statistics sched_ext: Fix kabi for balance in struct sched_class sched_ext: Fix kabi for header in kernel/sched/sched.h sched: Fix kabi pick_task in struct sched_class sched: Fix kabi for put_prev_task in struct sched_class sched_ext: Fix kabi for scx_flags and scx_weight in struct task_group sched: Fix kabi for int idle in struct task_group sched: Add __setscheduler_class() for sched_ext genirq: Fix kabi for kstat_irqs in struct irq_desc bpf: Fix kabi for size in struct bpf_tramp_image sched_ext: Enable and disable sched_ext configs guanjing (1): sched_ext: fix application of sizeof to pointer Documentation/bpf/bpf_iterators.rst | 2 +- Documentation/bpf/kfuncs.rst | 14 +- Documentation/scheduler/index.rst | 1 + Documentation/scheduler/sched-design-CFS.rst | 8 +- Documentation/scheduler/sched-ext.rst | 325 + .../zh_CN/scheduler/sched-design-CFS.rst | 8 +- MAINTAINERS | 14 + arch/arm64/configs/openeuler_defconfig | 3 + arch/arm64/net/bpf_jit_comp.c | 55 +- arch/mips/dec/setup.c | 2 +- arch/parisc/kernel/smp.c | 2 +- arch/powerpc/kvm/book3s_hv_rm_xics.c | 2 +- arch/riscv/net/bpf_jit_comp64.c | 43 +- arch/s390/net/bpf_jit_comp.c | 56 +- arch/x86/configs/openeuler_defconfig | 2 + arch/x86/net/bpf_jit_comp.c | 130 +- drivers/hid/bpf/hid_bpf_dispatch.c | 8 +- drivers/tty/sysrq.c | 1 + include/asm-generic/vmlinux.lds.h | 1 + include/linux/bitops.h | 2 + include/linux/bpf.h | 101 +- include/linux/bpf_mem_alloc.h | 3 + include/linux/bpf_verifier.h | 22 +- include/linux/btf.h | 39 + include/linux/btf_ids.h | 21 +- include/linux/cgroup.h | 14 +- include/linux/cleanup.h | 42 +- include/linux/cpumask.h | 41 +- include/linux/energy_model.h | 1 - include/linux/file.h | 20 + include/linux/filter.h | 2 +- include/linux/irqdesc.h | 17 +- include/linux/kernel_stat.h | 8 + include/linux/sched.h | 8 +- include/linux/sched/ext.h | 216 + include/linux/sched/task.h | 8 +- include/linux/trace_events.h | 6 +- include/trace/events/sched_ext.h | 32 + include/uapi/linux/bpf.h | 32 +- include/uapi/linux/sched.h | 1 + init/Kconfig | 10 + init/init_task.c | 12 + kernel/Kconfig.preempt | 27 +- kernel/bpf/bpf_iter.c | 8 +- kernel/bpf/bpf_struct_ops.c | 730 +- kernel/bpf/bpf_struct_ops_types.h | 12 - kernel/bpf/btf.c | 254 +- kernel/bpf/cgroup_iter.c | 65 +- kernel/bpf/core.c | 21 +- kernel/bpf/cpumask.c | 10 +- kernel/bpf/dispatcher.c | 7 +- kernel/bpf/helpers.c | 186 +- kernel/bpf/map_iter.c | 10 +- kernel/bpf/memalloc.c | 14 +- kernel/bpf/syscall.c | 22 +- kernel/bpf/task_iter.c | 242 +- kernel/bpf/trampoline.c | 101 +- kernel/bpf/verifier.c | 309 +- kernel/cgroup/cgroup.c | 18 +- kernel/cgroup/rstat.c | 4 +- kernel/fork.c | 17 +- kernel/irq/Kconfig | 4 + kernel/irq/internals.h | 2 +- kernel/irq/irqdesc.c | 144 +- kernel/irq/proc.c | 5 +- kernel/sched/autogroup.c | 4 +- kernel/sched/build_policy.c | 13 + kernel/sched/core.c | 2492 +----- kernel/sched/cpufreq_schedutil.c | 89 +- kernel/sched/deadline.c | 175 +- kernel/sched/debug.c | 3 + kernel/sched/ext.c | 7242 +++++++++++++++++ kernel/sched/ext.h | 119 + kernel/sched/ext_idle.c | 752 ++ kernel/sched/ext_idle.h | 39 + kernel/sched/fair.c | 306 +- kernel/sched/idle.c | 31 +- kernel/sched/rt.c | 40 +- kernel/sched/sched.h | 473 +- kernel/sched/stop_task.c | 35 +- kernel/sched/syscalls.c | 1713 ++++ kernel/trace/bpf_trace.c | 15 +- kernel/trace/trace_kprobe.c | 14 +- kernel/trace/trace_probe.c | 2 - kernel/watchdog.c | 223 +- lib/Kconfig.debug | 14 + lib/dump_stack.c | 1 + lib/rhashtable.c | 12 +- net/bpf/bpf_dummy_struct_ops.c | 60 +- net/bpf/test_run.c | 15 +- net/core/filter.c | 29 +- net/core/xdp.c | 10 +- net/ipv4/bpf_tcp_ca.c | 93 +- net/ipv4/fou_bpf.c | 10 +- net/ipv4/tcp_bbr.c | 4 +- net/ipv4/tcp_cong.c | 6 +- net/ipv4/tcp_cubic.c | 4 +- net/ipv4/tcp_dctcp.c | 4 +- net/netfilter/nf_conntrack_bpf.c | 10 +- net/netfilter/nf_nat_bpf.c | 10 +- net/xfrm/xfrm_interface_bpf.c | 10 +- scripts/gdb/linux/interrupts.py | 6 +- tools/Makefile | 10 +- .../bpf/bpftool/Documentation/bpftool-gen.rst | 58 +- tools/bpf/bpftool/gen.c | 237 +- tools/include/linux/bitops.h | 2 + tools/include/uapi/linux/bpf.h | 21 +- tools/include/uapi/linux/sched.h | 1 + tools/lib/bpf/bpf.c | 4 +- tools/lib/bpf/bpf.h | 4 +- tools/lib/bpf/libbpf.c | 97 +- tools/lib/bpf/libbpf_probes.c | 1 + tools/perf/util/probe-finder.c | 4 +- tools/sched_ext/.gitignore | 2 + tools/sched_ext/Makefile | 246 + tools/sched_ext/README.md | 270 + .../sched_ext/include/bpf-compat/gnu/stubs.h | 11 + tools/sched_ext/include/scx/common.bpf.h | 620 ++ tools/sched_ext/include/scx/common.h | 81 + tools/sched_ext/include/scx/compat.bpf.h | 143 + tools/sched_ext/include/scx/compat.h | 187 + .../sched_ext/include/scx/enums.autogen.bpf.h | 105 + tools/sched_ext/include/scx/enums.autogen.h | 41 + tools/sched_ext/include/scx/enums.bpf.h | 12 + tools/sched_ext/include/scx/enums.h | 27 + tools/sched_ext/include/scx/user_exit_info.h | 118 + tools/sched_ext/scx_central.bpf.c | 356 + tools/sched_ext/scx_central.c | 136 + tools/sched_ext/scx_flatcg.bpf.c | 954 +++ tools/sched_ext/scx_flatcg.c | 234 + tools/sched_ext/scx_flatcg.h | 51 + tools/sched_ext/scx_qmap.bpf.c | 827 ++ tools/sched_ext/scx_qmap.c | 155 + tools/sched_ext/scx_show_state.py | 42 + tools/sched_ext/scx_simple.bpf.c | 151 + tools/sched_ext/scx_simple.c | 107 + tools/testing/selftests/Makefile | 9 +- .../testing/selftests/bpf/bpf_experimental.h | 27 + .../selftests/bpf/bpf_testmod/bpf_testmod.c | 108 +- .../selftests/bpf/bpf_testmod/bpf_testmod.h | 17 + .../selftests/bpf/prog_tests/bpf_iter.c | 44 +- .../selftests/bpf/prog_tests/cgroup_iter.c | 33 + .../bpf/prog_tests/global_func_dead_code.c | 60 + .../testing/selftests/bpf/prog_tests/iters.c | 209 + .../selftests/bpf/prog_tests/rcu_read_lock.c | 6 + .../selftests/bpf/prog_tests/spin_lock.c | 2 + .../prog_tests/test_struct_ops_maybe_null.c | 46 + .../bpf/prog_tests/test_struct_ops_module.c | 86 + .../testing/selftests/bpf/prog_tests/timer.c | 4 + .../selftests/bpf/prog_tests/verifier.c | 4 + ...f_iter_task_vma.c => bpf_iter_task_vmas.c} | 0 .../{bpf_iter_task.c => bpf_iter_tasks.c} | 0 .../bpf/progs/freplace_dead_global_func.c | 11 + tools/testing/selftests/bpf/progs/iters_css.c | 72 + .../selftests/bpf/progs/iters_css_task.c | 102 + .../testing/selftests/bpf/progs/iters_task.c | 41 + .../selftests/bpf/progs/iters_task_failure.c | 105 + .../selftests/bpf/progs/iters_task_vma.c | 54 + .../selftests/bpf/progs/iters_testmod_seq.c | 50 + .../selftests/bpf/progs/rcu_read_lock.c | 120 + .../bpf/progs/struct_ops_maybe_null.c | 29 + .../bpf/progs/struct_ops_maybe_null_fail.c | 24 + .../selftests/bpf/progs/struct_ops_module.c | 37 + .../selftests/bpf/progs/test_global_func12.c | 4 +- .../selftests/bpf/progs/test_spin_lock.c | 65 + .../selftests/bpf/progs/test_spin_lock_fail.c | 44 + tools/testing/selftests/bpf/progs/timer.c | 63 +- .../selftests/bpf/progs/verifier_bits_iter.c | 232 + .../bpf/progs/verifier_global_subprogs.c | 101 + .../selftests/bpf/progs/verifier_spin_lock.c | 2 +- .../bpf/progs/verifier_subprog_precision.c | 4 +- tools/testing/selftests/bpf/test_loader.c | 9 +- tools/testing/selftests/bpf/test_maps.c | 18 +- tools/testing/selftests/bpf/test_maps.h | 5 + tools/testing/selftests/sched_ext/.gitignore | 6 + tools/testing/selftests/sched_ext/Makefile | 211 + tools/testing/selftests/sched_ext/config | 9 + .../selftests/sched_ext/create_dsq.bpf.c | 58 + .../testing/selftests/sched_ext/create_dsq.c | 57 + .../sched_ext/ddsp_bogus_dsq_fail.bpf.c | 42 + .../selftests/sched_ext/ddsp_bogus_dsq_fail.c | 60 + .../sched_ext/ddsp_vtimelocal_fail.bpf.c | 39 + .../sched_ext/ddsp_vtimelocal_fail.c | 59 + .../selftests/sched_ext/dsp_local_on.bpf.c | 68 + .../selftests/sched_ext/dsp_local_on.c | 60 + .../sched_ext/enq_last_no_enq_fails.bpf.c | 29 + .../sched_ext/enq_last_no_enq_fails.c | 64 + .../sched_ext/enq_select_cpu_fails.bpf.c | 43 + .../sched_ext/enq_select_cpu_fails.c | 61 + tools/testing/selftests/sched_ext/exit.bpf.c | 86 + tools/testing/selftests/sched_ext/exit.c | 64 + tools/testing/selftests/sched_ext/exit_test.h | 20 + .../testing/selftests/sched_ext/hotplug.bpf.c | 61 + tools/testing/selftests/sched_ext/hotplug.c | 170 + .../selftests/sched_ext/hotplug_test.h | 15 + .../sched_ext/init_enable_count.bpf.c | 53 + .../selftests/sched_ext/init_enable_count.c | 157 + .../testing/selftests/sched_ext/maximal.bpf.c | 166 + tools/testing/selftests/sched_ext/maximal.c | 54 + .../selftests/sched_ext/maybe_null.bpf.c | 36 + .../testing/selftests/sched_ext/maybe_null.c | 49 + .../sched_ext/maybe_null_fail_dsp.bpf.c | 25 + .../sched_ext/maybe_null_fail_yld.bpf.c | 28 + .../testing/selftests/sched_ext/minimal.bpf.c | 21 + tools/testing/selftests/sched_ext/minimal.c | 58 + .../selftests/sched_ext/prog_run.bpf.c | 33 + tools/testing/selftests/sched_ext/prog_run.c | 78 + .../testing/selftests/sched_ext/reload_loop.c | 74 + tools/testing/selftests/sched_ext/runner.c | 212 + tools/testing/selftests/sched_ext/scx_test.h | 131 + .../selftests/sched_ext/select_cpu_dfl.bpf.c | 40 + .../selftests/sched_ext/select_cpu_dfl.c | 75 + .../sched_ext/select_cpu_dfl_nodispatch.bpf.c | 89 + .../sched_ext/select_cpu_dfl_nodispatch.c | 75 + .../sched_ext/select_cpu_dispatch.bpf.c | 41 + .../selftests/sched_ext/select_cpu_dispatch.c | 73 + .../select_cpu_dispatch_bad_dsq.bpf.c | 37 + .../sched_ext/select_cpu_dispatch_bad_dsq.c | 59 + .../select_cpu_dispatch_dbl_dsp.bpf.c | 38 + .../sched_ext/select_cpu_dispatch_dbl_dsp.c | 59 + .../sched_ext/select_cpu_vtime.bpf.c | 92 + .../selftests/sched_ext/select_cpu_vtime.c | 62 + .../selftests/sched_ext/test_example.c | 49 + tools/testing/selftests/sched_ext/util.c | 71 + tools/testing/selftests/sched_ext/util.h | 13 + 225 files changed, 24757 insertions(+), 3360 deletions(-) create mode 100644 Documentation/scheduler/sched-ext.rst create mode 100644 include/linux/sched/ext.h create mode 100644 include/trace/events/sched_ext.h delete mode 100644 kernel/bpf/bpf_struct_ops_types.h create mode 100644 kernel/sched/ext.c create mode 100644 kernel/sched/ext.h create mode 100644 kernel/sched/ext_idle.c create mode 100644 kernel/sched/ext_idle.h create mode 100644 kernel/sched/syscalls.c create mode 100644 tools/sched_ext/.gitignore create mode 100644 tools/sched_ext/Makefile create mode 100644 tools/sched_ext/README.md create mode 100644 tools/sched_ext/include/bpf-compat/gnu/stubs.h create mode 100644 tools/sched_ext/include/scx/common.bpf.h create mode 100644 tools/sched_ext/include/scx/common.h create mode 100644 tools/sched_ext/include/scx/compat.bpf.h create mode 100644 tools/sched_ext/include/scx/compat.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.h create mode 100644 tools/sched_ext/include/scx/enums.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.h create mode 100644 tools/sched_ext/include/scx/user_exit_info.h create mode 100644 tools/sched_ext/scx_central.bpf.c create mode 100644 tools/sched_ext/scx_central.c create mode 100644 tools/sched_ext/scx_flatcg.bpf.c create mode 100644 tools/sched_ext/scx_flatcg.c create mode 100644 tools/sched_ext/scx_flatcg.h create mode 100644 tools/sched_ext/scx_qmap.bpf.c create mode 100644 tools/sched_ext/scx_qmap.c create mode 100644 tools/sched_ext/scx_show_state.py create mode 100644 tools/sched_ext/scx_simple.bpf.c create mode 100644 tools/sched_ext/scx_simple.c create mode 100644 tools/testing/selftests/bpf/prog_tests/global_func_dead_code.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c rename tools/testing/selftests/bpf/progs/{bpf_iter_task_vma.c => bpf_iter_task_vmas.c} (100%) rename tools/testing/selftests/bpf/progs/{bpf_iter_task.c => bpf_iter_tasks.c} (100%) create mode 100644 tools/testing/selftests/bpf/progs/freplace_dead_global_func.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_failure.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_vma.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null_fail.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_module.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_bits_iter.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_global_subprogs.c create mode 100644 tools/testing/selftests/sched_ext/.gitignore create mode 100644 tools/testing/selftests/sched_ext/Makefile create mode 100644 tools/testing/selftests/sched_ext/config create mode 100644 tools/testing/selftests/sched_ext/create_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/create_dsq.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.bpf.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.c create mode 100644 tools/testing/selftests/sched_ext/exit.bpf.c create mode 100644 tools/testing/selftests/sched_ext/exit.c create mode 100644 tools/testing/selftests/sched_ext/exit_test.h create mode 100644 tools/testing/selftests/sched_ext/hotplug.bpf.c create mode 100644 tools/testing/selftests/sched_ext/hotplug.c create mode 100644 tools/testing/selftests/sched_ext/hotplug_test.h create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.bpf.c create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.c create mode 100644 tools/testing/selftests/sched_ext/maximal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maximal.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_yld.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.bpf.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.c create mode 100644 tools/testing/selftests/sched_ext/reload_loop.c create mode 100644 tools/testing/selftests/sched_ext/runner.c create mode 100644 tools/testing/selftests/sched_ext/scx_test.h create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.c create mode 100644 tools/testing/selftests/sched_ext/test_example.c create mode 100644 tools/testing/selftests/sched_ext/util.c create mode 100644 tools/testing/selftests/sched_ext/util.h -- 2.34.1

1 399

[PATCH OLK-6.6] arm64/mpam: Synchronize MPAM Partid to kernel mode
by Zeng Heng 17 Dec '25

17 Dec '25

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IDD55N -------------------------------- Currently, the MPAM implementation on Linux only applies isolation control to tasks' user-space, while resource allocation for execution in kernel mode is according to the root group's (Partid=0) policy. With MPAM adding L2 cache support, and given small L2 capacity, frequently switching partition policies between kernel and user space would cause L2 thrashing and degrade performance. Moreover, to support MPAM isolation for kernel-space processes, kernel space should adopt the same partition policy as user space. Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- arch/arm64/include/asm/mpam.h | 1 + arch/arm64/kernel/cpufeature.c | 2 +- arch/arm64/kernel/mpam.c | 2 +- 3 files changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arm64/include/asm/mpam.h b/arch/arm64/include/asm/mpam.h index 8caac70e22ed..db4d559e8936 100644 --- a/arch/arm64/include/asm/mpam.h +++ b/arch/arm64/include/asm/mpam.h @@ -161,6 +161,7 @@ static inline void mpam_thread_switch(struct task_struct *tsk) return; /* Synchronising this write is left until the ERET to EL0 */ + write_sysreg_s(regval, SYS_MPAM1_EL1); write_sysreg_s(regval, SYS_MPAM0_EL1); WRITE_ONCE(per_cpu(arm64_mpam_current, cpu), regval); } diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 414b9d28ecd1..4cc8691dc7d8 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -2425,7 +2425,7 @@ cpu_enable_mpam(const struct arm64_cpu_capabilities *entry) * where latency sensitive tasks have to wait for a task that has * been throttled to release the lock. */ - write_sysreg_s(0, SYS_MPAM1_EL1); + write_sysreg_s(regval, SYS_MPAM1_EL1); write_sysreg_s(regval, SYS_MPAM0_EL1); } diff --git a/arch/arm64/kernel/mpam.c b/arch/arm64/kernel/mpam.c index 3f070cbab420..19d89beaad01 100644 --- a/arch/arm64/kernel/mpam.c +++ b/arch/arm64/kernel/mpam.c @@ -40,7 +40,7 @@ static int mpam_pm_notifier(struct notifier_block *self, * value has changed under our feet. */ regval = READ_ONCE(per_cpu(arm64_mpam_current, cpu)); - write_sysreg_s(0, SYS_MPAM1_EL1); + write_sysreg_s(regval, SYS_MPAM1_EL1); write_sysreg_s(regval, SYS_MPAM0_EL1); return NOTIFY_OK; -- 2.25.1

2 1

[PATCH openEuler-1.0-LTS] ppp: associate skb with a device at tx
by Wang Liang 17 Dec '25

17 Dec '25

From: Stanislav Fomichev <sdf(a)google.com> stable inclusion from stable-v4.19.270 commit c2a698ff156974908308f42cf5991ab5c0c4b8cd category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDBMV8 CVE: CVE-2022-50655 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 9f225444467b98579cf28d94f4ad053460dfdb84 ] Syzkaller triggered flow dissector warning with the following: r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000000000), 0xc0802, 0x0) ioctl$PPPIOCNEWUNIT(r0, 0xc004743e, &(0x7f00000000c0)) ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000240)={0x2, &(0x7f0000000180)=[{0x20, 0x0, 0x0, 0xfffff034}, {0x6}]}) pwritev(r0, &(0x7f0000000040)=[{&(0x7f0000000140)='\x00!', 0x2}], 0x1, 0x0, 0x0) [ 9.485814] WARNING: CPU: 3 PID: 329 at net/core/flow_dissector.c:1016 __skb_flow_dissect+0x1ee0/0x1fa0 [ 9.485929] skb_get_poff+0x53/0xa0 [ 9.485937] bpf_skb_get_pay_offset+0xe/0x20 [ 9.485944] ? ppp_send_frame+0xc2/0x5b0 [ 9.485949] ? _raw_spin_unlock_irqrestore+0x40/0x60 [ 9.485958] ? __ppp_xmit_process+0x7a/0xe0 [ 9.485968] ? ppp_xmit_process+0x5b/0xb0 [ 9.485974] ? ppp_write+0x12a/0x190 [ 9.485981] ? do_iter_write+0x18e/0x2d0 [ 9.485987] ? __import_iovec+0x30/0x130 [ 9.485997] ? do_pwritev+0x1b6/0x240 [ 9.486016] ? trace_hardirqs_on+0x47/0x50 [ 9.486023] ? __x64_sys_pwritev+0x24/0x30 [ 9.486026] ? do_syscall_64+0x3d/0x80 [ 9.486031] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd Flow dissector tries to find skb net namespace either via device or via socket. Neigher is set in ppp_send_frame, so let's manually use ppp->dev. Cc: Paul Mackerras <paulus(a)samba.org> Cc: linux-ppp(a)vger.kernel.org Reported-by: syzbot+41cab52ab62ee99ed24a(a)syzkaller.appspotmail.com Signed-off-by: Stanislav Fomichev <sdf(a)google.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Wang Liang <wangliang74(a)huawei.com> --- drivers/net/ppp/ppp_generic.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c index 5cd81bdf6d89..98a84d2c71bb 100644 --- a/drivers/net/ppp/ppp_generic.c +++ b/drivers/net/ppp/ppp_generic.c @@ -1532,6 +1532,8 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb) int len; unsigned char *cp; + skb->dev = ppp->dev; + if (proto < 0x8000) { #ifdef CONFIG_PPP_FILTER /* check if we should pass this packet */ -- 2.34.1

2 1

[openeuler:openEuler-1.0-LTS 1944/1944] lib/prime_numbers.c:8: warning: "bitmap_size" redefined
by kernel test robot 17 Dec '25

17 Dec '25

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 49bc452fdcb1e9ec3f9bb20cd3e15b865a2933fd commit: 9e8111c56a2515c7634662d19c29fde636758a02 [1944/1944] bitmap: introduce generic optimized bitmap_size() config: arm64-randconfig-r052-20251217 (https://download.01.org/0day-ci/archive/20251217/202512170947.gjTMu0Jt-lkp@…) compiler: aarch64-linux-gcc (GCC) 9.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251217/202512170947.gjTMu0Jt-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512170947.gjTMu0Jt-lkp@intel.com/ All warnings (new ones prefixed by >>): >> lib/prime_numbers.c:8: warning: "bitmap_size" redefined 8 | #define bitmap_size(nbits) (BITS_TO_LONGS(nbits) * sizeof(unsigned long)) | In file included from include/linux/cpumask.h:12, from include/linux/rcupdate.h:44, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from arch/arm64/include/asm/compat.h:25, from arch/arm64/include/asm/stat.h:24, from include/linux/stat.h:6, from include/linux/module.h:11, from lib/prime_numbers.c:3: include/linux/bitmap.h:215: note: this is the location of the previous definition 215 | #define bitmap_size(nbits) (ALIGN(nbits, BITS_PER_LONG) / BITS_PER_BYTE) | vim +/bitmap_size +8 lib/prime_numbers.c cf4a7207b1cb4a Chris Wilson 2016-12-22 7 cf4a7207b1cb4a Chris Wilson 2016-12-22 @8 #define bitmap_size(nbits) (BITS_TO_LONGS(nbits) * sizeof(unsigned long)) cf4a7207b1cb4a Chris Wilson 2016-12-22 9 :::::: The code at line 8 was first introduced by commit :::::: cf4a7207b1cb4a3c3fe3aa11a83c9d673722a7f5 lib: Add a simple prime number generator :::::: TO: Chris Wilson <chris(a)chris-wilson.co.uk> :::::: CC: Daniel Vetter <daniel.vetter(a)ffwll.ch> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-6.6 0/2] XSched: List Corruption
by Liu Kai 17 Dec '25

17 Dec '25

XSched: List Corruption Liu Kai (2): xsched: protect group member list with xcu_lock to prevent corruption xsched/cgroup: move list_del from css_free to css_offline to prevent corruption kernel/xsched/cgroup.c | 30 +++++++++++++++--------------- kernel/xsched/core.c | 7 +++---- kernel/xsched/vstream.c | 1 + 3 files changed, 19 insertions(+), 19 deletions(-) -- 2.34.1

2 3

[PATCH openEuler-26.09 000/399] sched_ext patch
by Zicheng Qu 17 Dec '25

17 Dec '25

Aboorva Devarajan (2): sched_ext: Documentation: Remove mentions of scx_bpf_switch_all sched: Pass correct scheduling policy to __setscheduler_class Alexander Lobakin (1): bitops: make BYTES_TO_BITS() treewide-available Alexei Starovoitov (1): selftests/bpf: modify test_loader that didn't support running bpf_prog_type_syscall programs Andrea Righi (32): sched_ext: fix typo in set_weight() description sched_ext: add CONFIG_DEBUG_INFO_BTF dependency sched_ext: Provide a sysfs enable_seq counter sched_ext: improve WAKE_SYNC behavior for default idle CPU selection sched_ext: Clarify ops.select_cpu() for single-CPU tasks sched_ext: Introduce LLC awareness to the default idle selection policy sched_ext: Introduce NUMA awareness to the default idle selection policy sched_ext: Do not enable LLC/NUMA optimizations when domains overlap sched_ext: Fix incorrect use of bitwise AND MAINTAINERS: add self as reviewer for sched_ext sched_ext: idle: Refresh idle masks during idle-to-idle transitions sched_ext: Use the NUMA scheduling domain for NUMA optimizations sched_ext: idle: use assign_cpu() to update the idle cpumask sched_ext: idle: clarify comments sched_ext: idle: introduce check_builtin_idle_enabled() helper sched_ext: idle: small CPU iteration refactoring sched_ext: update scx_bpf_dsq_insert() doc for SCX_DSQ_LOCAL_ON sched_ext: Include remaining task time slice in error state dump sched_ext: Include task weight in the error state dump selftests/sched_ext: Fix enum resolution tools/sched_ext: Add helper to check task migration state sched_ext: selftests/dsp_local_on: Fix selftest on UP systems sched_ext: Fix lock imbalance in dispatch_to_local_dsq() selftests/sched_ext: Fix exit selftest hang on UP sched_ext: Move built-in idle CPU selection policy to a separate file sched_ext: Track currently locked rq sched_ext: Make scx_locked_rq() inline sched_ext: Fix missing rq lock in scx_bpf_cpuperf_set() sched/ext: Fix invalid task state transitions on class switch sched_ext: Make scx_kf_allowed_if_unlocked() available outside ext.c sched_ext: Remove duplicate BTF_ID_FLAGS definitions sched_ext: Fix rq lock state in hotplug ops Andrii Nakryiko (7): bpf: extract iterator argument type and name validation logic bpf: allow passing struct bpf_iter_<type> as kfunc arguments selftests/bpf: test passing iterator to a kfunc bpf: Emit global subprog name in verifier logs bpf: Validate global subprogs lazily selftests/bpf: Add lazy global subprog validation tests selftests/bpf: validate eliminated global subprog is not freplaceable Arnaldo Carvalho de Melo (1): tools include UAPI: Sync linux/sched.h copy with the kernel sources Atul Kumar Pant (1): sched_ext: Fixes typos in comments Benjamin Tissoires (1): bpf: introduce in_sleepable() helper Bitao Hu (4): genirq: Convert kstat_irqs to a struct genirq: Provide a snapshot mechanism for interrupt statistics watchdog/softlockup: Low-overhead detection of interrupt storm watchdog/softlockup: Report the most frequent interrupts Björn Töpel (1): selftests: sched_ext: Add sched_ext as proper selftest target Breno Leitao (3): rhashtable: Fix potential deadlock by moving schedule_work outside lock sched_ext: Use kvzalloc for large exit_dump allocation sched/ext: Prevent update_locked_rq() calls with NULL rq Changwoo Min (11): sched_ext: Clarify sched_ext_ops table for userland scheduler sched_ext: add a missing rcu_read_lock/unlock pair at scx_select_cpu_dfl() MAINTAINERS: add me as reviewer for sched_ext sched_ext: Replace rq_lock() to raw_spin_rq_lock() in scx_ops_bypass() sched_ext: Relocate scx_enabled() related code sched_ext: Implement scx_bpf_now() sched_ext: Add scx_bpf_now() for BPF scheduler sched_ext: Add time helpers for BPF schedulers sched_ext: Replace bpf_ktime_get_ns() to scx_bpf_now() sched_ext: Use time helpers in BPF schedulers sched_ext: Fix incorrect time delta calculation in time_delta() Christian Brauner (1): file: add take_fd() cleanup helper Christian Loehle (1): sched/fair: Remove stale FREQUENCY_UTIL comment Chuyi Zhou (15): cgroup: Prepare for using css_task_iter_*() in BPF bpf: Introduce css_task open-coded iterator kfuncs bpf: Introduce task open coded iterator kfuncs bpf: Introduce css open-coded iterator kfuncs bpf: teach the verifier to enforce css_iter and task_iter in RCU CS bpf: Let bpf_iter_task_new accept null task ptr selftests/bpf: rename bpf_iter_task.c to bpf_iter_tasks.c selftests/bpf: Add tests for open-coded task and css iter bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg bpf: Relax allowlist for css_task iter selftests/bpf: Add tests for css_task iter combining with cgroup iter selftests/bpf: Add test for using css_task iter in sleepable progs selftests/bpf: get trusted cgrp from bpf_iter__cgroup directly sched_ext: Fix the incorrect bpf_list kfunc API in common.bpf.h. sched_ext: Use SCX_CALL_OP_TASK in task_tick_scx Colin Ian King (1): sched_ext: Fix spelling mistake: "intead" -> "instead" Daniel Xu (3): bpf: btf: Support flags for BTF_SET8 sets bpf: btf: Add BTF_KFUNCS_START/END macro pair bpf: treewide: Annotate BPF kfuncs in BTF Dave Marchevsky (5): bpf: Don't explicitly emit BTF for struct btf_iter_num selftests/bpf: Rename bpf_iter_task_vma.c to bpf_iter_task_vmas.c bpf: Introduce task_vma open-coded iterator kfuncs selftests/bpf: Add tests for open-coded task_vma iter bpf: Add __bpf_kfunc_{start,end}_defs macros David Vernet (15): bpf: Add ability to pin bpf timer to calling CPU selftests/bpf: Test pinning bpf timer to a core sched_ext: Implement runnable task stall watchdog sched_ext: Print sched_ext info when dumping stack sched_ext: Implement SCX_KICK_WAIT sched_ext: Implement sched_ext_ops.cpu_acquire/release() sched_ext: Add selftests bpf: Load vmlinux btf for any struct_ops map sched_ext: Make scx_bpf_cpuperf_set() @cpu arg signed scx: Allow calling sleepable kfuncs from BPF_PROG_TYPE_SYSCALL scx/selftests: Verify we can call create_dsq from prog_run sched_ext: Remove unnecessary cpu_relax() scx: Fix exit selftest to use custom DSQ scx: Fix raciness in scx_ops_bypass() scx: Fix maximal BPF selftest prog Dawei Li (1): genirq: Deduplicate interrupt descriptor initialization Devaansh Kumar (1): sched_ext: selftests: Fix grammar in tests description Devaansh-Kumar (1): sched_ext: Documentation: Update instructions for running example schedulers Geliang Tang (1): bpf, btf: Check btf for register_bpf_struct_ops Henry Huang (2): sched_ext: initialize kit->cursor.flags sched_ext: keep running prev when prev->scx.slice != 0 Herbert Xu (1): rhashtable: Fix rhashtable_try_insert test Honglei Wang (3): sched_ext: use correct function name in pick_task_scx() warning message sched_ext: Add __weak to fix the build errors sched_ext: switch class when preempted by higher priority scheduler Hongyan Xia (1): sched/ext: Add BPF function to fetch rq Hou Tao (7): bpf: Free dynamically allocated bits in bpf_iter_bits_destroy() bpf: Add bpf_mem_alloc_check_size() helper bpf: Check the validity of nr_words in bpf_iter_bits_new() bpf: Use __u64 to save the bits in bits iterator selftests/bpf: Add three test cases for bits_iter selftests/bpf: Use -4095 as the bad address for bits iterator selftests/bpf: Export map_update_retriable() Ihor Solodrai (2): selftests/sched_ext: add order-only dependency of runner.o on BPFOBJ selftests/sched_ext: fix build after renames in sched_ext API Ilpo Järvinen (1): <linux/cleanup.h>: Allow the passing of both iomem and non-iomem pointers to no_free_ptr() Ingo Molnar (3): sched/syscalls: Split out kernel/sched/syscalls.c from kernel/sched/core.c sched/fair: Rename check_preempt_wakeup() to check_preempt_wakeup_fair() sched/fair: Rename check_preempt_curr() to wakeup_preempt() Jake Hillion (1): sched_ext: create_dsq: Return -EEXIST on duplicate request Jiapeng Chong (1): sched_ext: Fixes incorrect type in bpf_scx_init() Jiayuan Chen (1): selftests/bpf: Fixes for test_maps test Jiri Olsa (2): bpf: Add missed value to kprobe perf link info bpf: Add cookie to perf_event bpf_link_info records Kui-Feng Lee (28): bpf: refactory struct_ops type initialization to a function. bpf: get type information with BTF_ID_LIST bpf, net: introduce bpf_struct_ops_desc. bpf: add struct_ops_tab to btf. bpf: make struct_ops_map support btfs other than btf_vmlinux. bpf: pass btf object id in bpf_map_info. bpf: lookup struct_ops types from a given module BTF. bpf: pass attached BTF to the bpf_struct_ops subsystem bpf: hold module refcnt in bpf_struct_ops map creation and prog verification. bpf: validate value_type bpf, net: switch to dynamic registration libbpf: Find correct module BTFs for struct_ops maps and progs. bpf: export btf_ctx_access to modules. selftests/bpf: test case for register_bpf_struct_ops(). bpf: Fix error checks against bpf_get_btf_vmlinux(). bpf: Move __kfunc_param_match_suffix() to btf.c. bpf: Remove an unnecessary check. bpf: add btf pointer to struct bpf_ctx_arg_aux. bpf: Create argument information for nullable arguments. selftests/bpf: Suppress warning message of an unused variable. selftests/bpf: Test PTR_MAYBE_NULL arguments of struct_ops operators. libbpf: Set btf_value_type_id of struct bpf_map for struct_ops. libbpf: Convert st_ops->data to shadow type. bpftool: Generated shadow variables for struct_ops maps. bpftool: Add an example for struct_ops map and shadow type. selftests/bpf: Test if shadow types work correctly. bpf, net: validate struct_ops when updating value. bpf: struct_ops supports more than one page for trampolines. Kumar Kartikeya Dwivedi (4): bpf: Allow calling static subprogs while holding a bpf_spin_lock selftests/bpf: Add test for static subprog call in lock cs bpf: Transfer RCU lock state between subprog calls selftests/bpf: Add tests for RCU lock transfer between subprogs Liang Jie (1): sched_ext: Use sizeof_field for key_len in dsq_hash_params Manu Bretelle (1): sched_ext: define missing cfi stubs for sched_ext Martin KaFai Lau (3): libbpf: Ensure undefined bpf_attr field stays 0 bpf: Reject struct_ops registration that uses module ptr and the module btf_id is missing bpf: Use kallsyms to find the function name of a struct_ops's stub function Matthieu Baerts (1): bpf: fix compilation error without CGROUPS Peter Zijlstra (20): cleanup: Make no_free_ptr() __must_check sched: Simplify set_user_nice() sched: Simplify syscalls sched: Simplify sched_{set,get}affinity() sched: Simplify yield_to() sched: Simplify sched_rr_get_interval() sched: Simplify sched_move_task() sched: Misc cleanups sched/deadline: Move bandwidth accounting into {en,de}queue_dl_entity sched: Allow sched_class::dequeue_task() to fail sched: Unify runtime accounting across classes sched: Use set_next_task(.first) where required sched/fair: Cleanup pick_task_fair() vs throttle sched/fair: Cleanup pick_task_fair()'s curr sched/fair: Unify pick_{,next_}_task_fair() sched: Fixup set_next_task() implementations sched: Split up put_prev_task_balance() sched: Rework pick_next_task() sched: Combine the last put_prev_task() and the first set_next_task() sched: Add put_prev_task(.next) Pu Lehui (1): riscv, bpf: Fix out-of-bounds issue when preparing trampoline image Randy Dunlap (1): sched_ext: fix kernel-doc warnings Shizhao Chen (1): sched_ext: Add option -l in selftest runner to list all available tests Song Liu (8): bpf: Charge modmem for struct_ops trampoline bpf: Let bpf_prog_pack_free handle any pointer bpf: Adjust argument names of arch_prepare_bpf_trampoline() bpf: Add helpers for trampoline image management bpf, x86: Adjust arch_prepare_bpf_trampoline return value bpf: Add arch_bpf_trampoline_size() bpf: Use arch_bpf_trampoline_size x86, bpf: Use bpf_prog_pack for bpf trampoline T.J. Mercier (1): bpf, docs: Fix broken link to renamed bpf_iter_task_vmas.c Tejun Heo (148): sched: Restructure sched_class order sanity checks in sched_init() sched: Allow sched_cgroup_fork() to fail and introduce sched_cancel_fork() sched: Add sched_class->reweight_task() sched: Add sched_class->switching_to() and expose check_class_changing/changed() sched: Factor out cgroup weight conversion functions sched: Factor out update_other_load_avgs() from __update_blocked_others() sched: Add normal_policy() sched_ext: Add boilerplate for extensible scheduler class sched_ext: Implement BPF extensible scheduler class sched_ext: Add scx_simple and scx_example_qmap example schedulers sched_ext: Add sysrq-S which disables the BPF scheduler sched_ext: Allow BPF schedulers to disallow specific tasks from joining SCHED_EXT sched_ext: Print debug dump after an error exit tools/sched_ext: Add scx_show_state.py sched_ext: Implement scx_bpf_kick_cpu() and task preemption support sched_ext: Add a central scheduler which makes all scheduling decisions on one CPU sched_ext: Make watchdog handle ops.dispatch() looping stall sched_ext: Add task state tracking operations sched_ext: Implement tickless support sched_ext: Track tasks that are subjects of the in-flight SCX operation sched_ext: Implement sched_ext_ops.cpu_online/offline() sched_ext: Bypass BPF scheduler while PM events are in progress sched_ext: Implement core-sched support sched_ext: Add vtime-ordered priority queue to dispatch_q's sched_ext: Documentation: scheduler: Document extensible scheduler class sched, sched_ext: Replace scx_next_task_picked() with sched_class->switch_class() cpufreq_schedutil: Refactor sugov_cpu_is_busy() sched_ext: Add cpuperf support sched_ext: Drop tools_clean target from the top-level Makefile sched_ext: Swap argument positions in kcalloc() call to avoid compiler warning sched, sched_ext: Simplify dl_prio() case handling in sched_fork() sched_ext: Account for idle policy when setting p->scx.weight in scx_ops_enable_task() sched_ext: Disallow loading BPF scheduler if isolcpus= domain isolation is in effect sched_ext: Minor cleanups in kernel/sched/ext.h sched, sched_ext: Open code for_balance_class_range() sched, sched_ext: Move some declarations from kernel/sched/ext.h to sched.h sched_ext: Take out ->priq and ->flags from scx_dsq_node sched_ext: Implement DSQ iterator sched_ext/scx_qmap: Add an example usage of DSQ iterator sched_ext: Reimplement scx_bpf_reenqueue_local() sched_ext: Make scx_bpf_reenqueue_local() skip tasks that are being migrated sched: Move struct balance_callback definition upward sched_ext: Unpin and repin rq lock from balance_scx() sched_ext: s/SCX_RQ_BALANCING/SCX_RQ_IN_BALANCE/ and add SCX_RQ_IN_WAKEUP sched_ext: Allow SCX_DSQ_LOCAL_ON for direct dispatches sched_ext/scx_qmap: Pick idle CPU for direct dispatch on !wakeup enqueues sched_ext: Build fix on !CONFIG_STACKTRACE[_SUPPORT] sched_ext: Allow p->scx.disallow only while loading sched_ext: Simplify scx_can_stop_tick() invocation in sched_can_stop_tick() sched_ext: Add scx_enabled() test to @start_class promotion in put_prev_task_balance() sched_ext: Use update_curr_common() in update_curr_scx() sched_ext: Simplify UP support by enabling sched_class->balance() in UP sched_ext: Improve comment on idle_sched_class exception in scx_task_iter_next_locked() sched_ext: Make task_can_run_on_remote_rq() use common task_allowed_on_cpu() sched_ext: Fix unsafe list iteration in process_ddsp_deferred_locals() sched_ext: Make scx_rq_online() also test cpu_active() in addition to SCX_RQ_ONLINE sched_ext: Improve logging around enable/disable sched_ext: Don't use double locking to migrate tasks across CPUs scx_central: Fix smatch checker warning sched_ext: Add missing cfi stub for ops.tick sched_ext: Use task_can_run_on_remote_rq() test in dispatch_to_local_dsq() sched_ext: Use sched_clock_cpu() instead of rq_clock_task() in touch_core_sched() sched_ext: Don't call put_prev_task_scx() before picking the next task sched_ext: Replace SCX_TASK_BAL_KEEP with SCX_RQ_BAL_KEEP sched_ext: Unify regular and core-sched pick task paths sched_ext: Relocate functions in kernel/sched/ext.c sched_ext: Remove switch_class_scx() sched_ext: Remove sched_class->switch_class() sched_ext: TASK_DEAD tasks must be switched out of SCX on ops_disable sched_ext: TASK_DEAD tasks must be switched into SCX on ops_enable sched: Expose css_tg() sched: Make cpu_shares_read_u64() use tg_weight() sched: Introduce CONFIG_GROUP_SCHED_WEIGHT sched_ext: Add cgroup support sched_ext: Add a cgroup scheduler which uses flattened hierarchy sched_ext: Temporarily work around pick_task_scx() being called without balance_scx() sched_ext: Add missing static to scx_has_op[] sched_ext: Add missing static to scx_dump_data sched_ext: Rename scx_kfunc_set_sleepable to unlocked and relocate sched_ext: Refactor consume_remote_task() sched_ext: Make find_dsq_for_dispatch() handle SCX_DSQ_LOCAL_ON sched_ext: Fix processs_ddsp_deferred_locals() by unifying DTL_INVALID handling sched_ext: Restructure dispatch_to_local_dsq() sched_ext: Reorder args for consume_local/remote_task() sched_ext: Move sanity check and dsq_mod_nr() into task_unlink_from_dsq() sched_ext: Move consume_local_task() upward sched_ext: Replace consume_local_task() with move_local_task_to_local_dsq() sched_ext: Compact struct bpf_iter_scx_dsq_kern sched_ext: Implement scx_bpf_dispatch[_vtime]_from_dsq() scx_qmap: Implement highpri boosting sched_ext: Synchronize bypass state changes with rq lock sched_ext: Don't trigger ops.quiescent/runnable() on migrations sched_ext: Fix build when !CONFIG_STACKTRACE sched_ext: Build fix for !CONFIG_SMP sched_ext: Add __COMPAT helpers for features added during v6.12 devel cycle tools/sched_ext: Receive misc updates from SCX repo scx_flatcg: Use a user DSQ for fallback instead of SCX_DSQ_GLOBAL sched_ext: Allow only user DSQs for scx_bpf_consume(), scx_bpf_dsq_nr_queued() and bpf_iter_scx_dsq_new() sched_ext: Relocate find_user_dsq() sched_ext: Split the global DSQ per NUMA node sched_ext: Use shorter slice while bypassing sched_ext: Relocate check_hotplug_seq() call in scx_ops_enable() sched_ext: Remove SCX_OPS_PREPPING sched_ext: Initialize in bypass mode sched_ext: Fix SCX_TASK_INIT -> SCX_TASK_READY transitions in scx_ops_enable() sched_ext: Enable scx_ops_init_task() separately sched_ext: Add scx_cgroup_enabled to gate cgroup operations and fix scx_tg_online() sched_ext: Decouple locks in scx_ops_disable_workfn() sched_ext: Decouple locks in scx_ops_enable() sched_ext: Improve error reporting during loading sched_ext: scx_cgroup_exit() may be called without successful scx_cgroup_init() sched/core: Make select_task_rq() take the pointer to wake_flags instead of value sched/core: Add ENQUEUE_RQ_SELECTED to indicate whether ->select_task_rq() was called sched_ext, scx_qmap: Add and use SCX_ENQ_CPU_SELECTED Revert "sched_ext: Use shorter slice while bypassing" sched_ext: Start schedulers with consistent p->scx.slice values sched_ext: Move scx_buildin_idle_enabled check to scx_bpf_select_cpu_dfl() sched_ext: bypass mode shouldn't depend on ops.select_cpu() sched_ext: Move scx_tasks_lock handling into scx_task_iter helpers sched_ext: Don't hold scx_tasks_lock for too long sched_ext: Make cast_mask() inline sched_ext: Fix enq_last_no_enq_fails selftest sched_ext: Add a missing newline at the end of an error message sched_ext: Update scx_show_state.py to match scx_ops_bypass_depth's new type sched_ext: Handle cases where pick_task_scx() is called without preceding balance_scx() sched_ext: ops.cpu_acquire() should be called with SCX_KF_REST sched_ext: Factor out move_task_between_dsqs() from scx_dispatch_from_dsq() sched_ext: Rename CFI stubs to names that are recognized by BPF sched_ext: Replace set_arg_maybe_null() with __nullable CFI stub tags sched_ext: Avoid live-locking bypass mode switching sched_ext: Enable the ops breather and eject BPF scheduler on softlockup sched_ext: scx_bpf_dispatch_from_dsq_set_*() are allowed from unlocked context sched_ext: Rename scx_bpf_dispatch[_vtime]() to scx_bpf_dsq_insert[_vtime]() sched_ext: Rename scx_bpf_consume() to scx_bpf_dsq_move_to_local() sched_ext: Rename scx_bpf_dispatch[_vtime]_from_dsq*() -> scx_bpf_dsq_move[_vtime]*() sched_ext: Fix invalid irq restore in scx_ops_bypass() sched_ext: Fix dsq_local_on selftest tools/sched_ext: Receive updates from SCX repo sched_ext: selftests/dsp_local_on: Fix sporadic failures sched_ext: Fix incorrect autogroup migration detection sched_ext: Implement auto local dispatching of migration disabled tasks sched_ext: Fix migration disabled handling in targeted dispatches sched_ext: Fix incorrect assumption about migration disabled tasks in task_can_run_on_remote_rq() sched_ext: Fix pick_task_scx() picking non-queued tasks when it's called without balance() sched_ext: Implement SCX_OPS_ALLOW_QUEUED_WAKEUP sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator sched_ext: Make scx_group_set_weight() always update tg->scx.weight sched_ext, sched/core: Don't call scx_group_set_weight() prematurely from sched_create_group() Thomas Gleixner (1): sched/ext: Remove sched_fork() hack Thorsten Blum (1): sched_ext: Use str_enabled_disabled() helper in update_selcpu_topology() Tianchen Ding (1): sched_ext: Use btf_ids to resolve task_struct Vincent Guittot (3): sched/cpufreq: Rework schedutil governor performance estimation sched/fair: Fix frequency selection for non-invariant case sched/fair: Fix sched_can_stop_tick() for fair tasks Vishal Chourasia (2): sched_ext: Add __weak markers to BPF helper function decalarations sched_ext: Fix function pointer type mismatches in BPF selftests Wenyu Huang (1): sched/doc: Update documentation after renames and synchronize Chinese version Yafang Shao (2): bpf: Add bits iterator selftests/bpf: Add selftest for bits iter Yipeng Zou (1): sched_ext: Allow dequeue_task_scx to fail Yiwei Lin (1): sched/fair: Remove unused 'curr' argument from pick_next_entity() Yu Liao (2): sched: Put task_group::idle under CONFIG_GROUP_SCHED_WEIGHT sched: Add dummy version of sched_group_set_idle() Yury Norov (1): cpumask: introduce assign_cpu() macro Zhang Qiao (3): sched_ext: Remove redundant p->nr_cpus_allowed checker sched/ext: Fix unmatch trailing comment of CONFIG_EXT_GROUP_SCHED sched/ext: Use tg_cgroup() to elieminate duplicate code Zhao Mengmeng (1): sched_ext: Replace scx_next_task_picked() with switch_class() in comment Zicheng Qu (25): bpf: Fix kabi for missed in bpf_link_info bpf: Fix kabi for cookie in bpf_link_info bpf: Fix kabi for value_type_btf_obj_fd in union bpf_attr bpf: Fix kabi for struct bpf_verifier_env selftest/bpf: Fix task_vma iter verification error bpf: Fix kabi for btf in struct bpf_ctx_arg_aux bpf: Fix kabi for called and verified in struct bpf_func_info_aux sched: Fix kabi for reweight_task in struct sched_class sched/syscalls: Fix kabi for EXPORT_SYMBOL moved from core.c to syscalls.c sched: Fix kabi for switching_to in struct sched_class sched/fair: Fix kabi for check_preempt_curr and wakeup_preempt in struct sched_class sched: Fix kabi for dequeue_task in struct sched_class sched_ext: Fix kabi for scx in struct task_struct sched_ext: Fix kabi for switch_class in struct sched_class sched: Fix kabi for exec_max in struct sched_statistics sched_ext: Fix kabi for balance in struct sched_class sched_ext: Fix kabi for header in kernel/sched/sched.h sched: Fix kabi pick_task in struct sched_class sched: Fix kabi for put_prev_task in struct sched_class sched_ext: Fix kabi for scx_flags and scx_weight in struct task_group sched: Fix kabi for int idle in struct task_group sched: Add __setscheduler_class() for sched_ext genirq: Fix kabi for kstat_irqs in struct irq_desc bpf: Fix kabi for size in struct bpf_tramp_image sched_ext: Enable sched_ext configs on arm64 guanjing (1): sched_ext: fix application of sizeof to pointer Documentation/bpf/bpf_iterators.rst | 2 +- Documentation/bpf/kfuncs.rst | 14 +- Documentation/scheduler/index.rst | 1 + Documentation/scheduler/sched-design-CFS.rst | 8 +- Documentation/scheduler/sched-ext.rst | 325 + .../zh_CN/scheduler/sched-design-CFS.rst | 8 +- MAINTAINERS | 14 + arch/arm64/configs/openeuler_defconfig | 2 + arch/arm64/net/bpf_jit_comp.c | 55 +- arch/mips/dec/setup.c | 2 +- arch/parisc/kernel/smp.c | 2 +- arch/powerpc/kvm/book3s_hv_rm_xics.c | 2 +- arch/riscv/net/bpf_jit_comp64.c | 43 +- arch/s390/net/bpf_jit_comp.c | 56 +- arch/x86/net/bpf_jit_comp.c | 130 +- drivers/hid/bpf/hid_bpf_dispatch.c | 8 +- drivers/tty/sysrq.c | 1 + include/asm-generic/vmlinux.lds.h | 1 + include/linux/bitops.h | 2 + include/linux/bpf.h | 101 +- include/linux/bpf_mem_alloc.h | 3 + include/linux/bpf_verifier.h | 22 +- include/linux/btf.h | 39 + include/linux/btf_ids.h | 21 +- include/linux/cgroup.h | 14 +- include/linux/cleanup.h | 42 +- include/linux/cpumask.h | 41 +- include/linux/energy_model.h | 1 - include/linux/file.h | 20 + include/linux/filter.h | 2 +- include/linux/irqdesc.h | 17 +- include/linux/kernel_stat.h | 8 + include/linux/sched.h | 8 +- include/linux/sched/ext.h | 216 + include/linux/sched/task.h | 8 +- include/linux/trace_events.h | 6 +- include/trace/events/sched_ext.h | 32 + include/uapi/linux/bpf.h | 32 +- include/uapi/linux/sched.h | 1 + init/Kconfig | 10 + init/init_task.c | 12 + kernel/Kconfig.preempt | 27 +- kernel/bpf/bpf_iter.c | 8 +- kernel/bpf/bpf_struct_ops.c | 730 +- kernel/bpf/bpf_struct_ops_types.h | 12 - kernel/bpf/btf.c | 254 +- kernel/bpf/cgroup_iter.c | 65 +- kernel/bpf/core.c | 21 +- kernel/bpf/cpumask.c | 10 +- kernel/bpf/dispatcher.c | 7 +- kernel/bpf/helpers.c | 186 +- kernel/bpf/map_iter.c | 10 +- kernel/bpf/memalloc.c | 14 +- kernel/bpf/syscall.c | 22 +- kernel/bpf/task_iter.c | 242 +- kernel/bpf/trampoline.c | 101 +- kernel/bpf/verifier.c | 309 +- kernel/cgroup/cgroup.c | 18 +- kernel/cgroup/rstat.c | 4 +- kernel/fork.c | 17 +- kernel/irq/Kconfig | 4 + kernel/irq/internals.h | 2 +- kernel/irq/irqdesc.c | 144 +- kernel/irq/proc.c | 5 +- kernel/sched/autogroup.c | 4 +- kernel/sched/build_policy.c | 13 + kernel/sched/core.c | 2492 +----- kernel/sched/cpufreq_schedutil.c | 89 +- kernel/sched/deadline.c | 175 +- kernel/sched/debug.c | 3 + kernel/sched/ext.c | 7242 +++++++++++++++++ kernel/sched/ext.h | 119 + kernel/sched/ext_idle.c | 752 ++ kernel/sched/ext_idle.h | 39 + kernel/sched/fair.c | 306 +- kernel/sched/idle.c | 31 +- kernel/sched/rt.c | 40 +- kernel/sched/sched.h | 473 +- kernel/sched/stop_task.c | 35 +- kernel/sched/syscalls.c | 1713 ++++ kernel/trace/bpf_trace.c | 15 +- kernel/trace/trace_kprobe.c | 14 +- kernel/trace/trace_probe.c | 2 - kernel/watchdog.c | 223 +- lib/Kconfig.debug | 14 + lib/dump_stack.c | 1 + lib/rhashtable.c | 12 +- net/bpf/bpf_dummy_struct_ops.c | 60 +- net/bpf/test_run.c | 15 +- net/core/filter.c | 29 +- net/core/xdp.c | 10 +- net/ipv4/bpf_tcp_ca.c | 93 +- net/ipv4/fou_bpf.c | 10 +- net/ipv4/tcp_bbr.c | 4 +- net/ipv4/tcp_cong.c | 6 +- net/ipv4/tcp_cubic.c | 4 +- net/ipv4/tcp_dctcp.c | 4 +- net/netfilter/nf_conntrack_bpf.c | 10 +- net/netfilter/nf_nat_bpf.c | 10 +- net/xfrm/xfrm_interface_bpf.c | 10 +- scripts/gdb/linux/interrupts.py | 6 +- tools/Makefile | 10 +- .../bpf/bpftool/Documentation/bpftool-gen.rst | 58 +- tools/bpf/bpftool/gen.c | 237 +- tools/include/linux/bitops.h | 2 + tools/include/uapi/linux/bpf.h | 21 +- tools/include/uapi/linux/sched.h | 1 + tools/lib/bpf/bpf.c | 4 +- tools/lib/bpf/bpf.h | 4 +- tools/lib/bpf/libbpf.c | 97 +- tools/lib/bpf/libbpf_probes.c | 1 + tools/perf/util/probe-finder.c | 4 +- tools/sched_ext/.gitignore | 2 + tools/sched_ext/Makefile | 246 + tools/sched_ext/README.md | 270 + .../sched_ext/include/bpf-compat/gnu/stubs.h | 11 + tools/sched_ext/include/scx/common.bpf.h | 620 ++ tools/sched_ext/include/scx/common.h | 81 + tools/sched_ext/include/scx/compat.bpf.h | 143 + tools/sched_ext/include/scx/compat.h | 187 + .../sched_ext/include/scx/enums.autogen.bpf.h | 105 + tools/sched_ext/include/scx/enums.autogen.h | 41 + tools/sched_ext/include/scx/enums.bpf.h | 12 + tools/sched_ext/include/scx/enums.h | 27 + tools/sched_ext/include/scx/user_exit_info.h | 118 + tools/sched_ext/scx_central.bpf.c | 356 + tools/sched_ext/scx_central.c | 136 + tools/sched_ext/scx_flatcg.bpf.c | 954 +++ tools/sched_ext/scx_flatcg.c | 234 + tools/sched_ext/scx_flatcg.h | 51 + tools/sched_ext/scx_qmap.bpf.c | 827 ++ tools/sched_ext/scx_qmap.c | 155 + tools/sched_ext/scx_show_state.py | 42 + tools/sched_ext/scx_simple.bpf.c | 151 + tools/sched_ext/scx_simple.c | 107 + tools/testing/selftests/Makefile | 9 +- .../testing/selftests/bpf/bpf_experimental.h | 27 + .../selftests/bpf/bpf_testmod/bpf_testmod.c | 108 +- .../selftests/bpf/bpf_testmod/bpf_testmod.h | 17 + .../selftests/bpf/prog_tests/bpf_iter.c | 44 +- .../selftests/bpf/prog_tests/cgroup_iter.c | 33 + .../bpf/prog_tests/global_func_dead_code.c | 60 + .../testing/selftests/bpf/prog_tests/iters.c | 209 + .../selftests/bpf/prog_tests/rcu_read_lock.c | 6 + .../selftests/bpf/prog_tests/spin_lock.c | 2 + .../prog_tests/test_struct_ops_maybe_null.c | 46 + .../bpf/prog_tests/test_struct_ops_module.c | 86 + .../testing/selftests/bpf/prog_tests/timer.c | 4 + .../selftests/bpf/prog_tests/verifier.c | 4 + ...f_iter_task_vma.c => bpf_iter_task_vmas.c} | 0 .../{bpf_iter_task.c => bpf_iter_tasks.c} | 0 .../bpf/progs/freplace_dead_global_func.c | 11 + tools/testing/selftests/bpf/progs/iters_css.c | 72 + .../selftests/bpf/progs/iters_css_task.c | 102 + .../testing/selftests/bpf/progs/iters_task.c | 41 + .../selftests/bpf/progs/iters_task_failure.c | 105 + .../selftests/bpf/progs/iters_task_vma.c | 54 + .../selftests/bpf/progs/iters_testmod_seq.c | 50 + .../selftests/bpf/progs/rcu_read_lock.c | 120 + .../bpf/progs/struct_ops_maybe_null.c | 29 + .../bpf/progs/struct_ops_maybe_null_fail.c | 24 + .../selftests/bpf/progs/struct_ops_module.c | 37 + .../selftests/bpf/progs/test_global_func12.c | 4 +- .../selftests/bpf/progs/test_spin_lock.c | 65 + .../selftests/bpf/progs/test_spin_lock_fail.c | 44 + tools/testing/selftests/bpf/progs/timer.c | 63 +- .../selftests/bpf/progs/verifier_bits_iter.c | 232 + .../bpf/progs/verifier_global_subprogs.c | 101 + .../selftests/bpf/progs/verifier_spin_lock.c | 2 +- .../bpf/progs/verifier_subprog_precision.c | 4 +- tools/testing/selftests/bpf/test_loader.c | 9 +- tools/testing/selftests/bpf/test_maps.c | 18 +- tools/testing/selftests/bpf/test_maps.h | 5 + tools/testing/selftests/sched_ext/.gitignore | 6 + tools/testing/selftests/sched_ext/Makefile | 211 + tools/testing/selftests/sched_ext/config | 9 + .../selftests/sched_ext/create_dsq.bpf.c | 58 + .../testing/selftests/sched_ext/create_dsq.c | 57 + .../sched_ext/ddsp_bogus_dsq_fail.bpf.c | 42 + .../selftests/sched_ext/ddsp_bogus_dsq_fail.c | 60 + .../sched_ext/ddsp_vtimelocal_fail.bpf.c | 39 + .../sched_ext/ddsp_vtimelocal_fail.c | 59 + .../selftests/sched_ext/dsp_local_on.bpf.c | 68 + .../selftests/sched_ext/dsp_local_on.c | 60 + .../sched_ext/enq_last_no_enq_fails.bpf.c | 29 + .../sched_ext/enq_last_no_enq_fails.c | 64 + .../sched_ext/enq_select_cpu_fails.bpf.c | 43 + .../sched_ext/enq_select_cpu_fails.c | 61 + tools/testing/selftests/sched_ext/exit.bpf.c | 86 + tools/testing/selftests/sched_ext/exit.c | 64 + tools/testing/selftests/sched_ext/exit_test.h | 20 + .../testing/selftests/sched_ext/hotplug.bpf.c | 61 + tools/testing/selftests/sched_ext/hotplug.c | 170 + .../selftests/sched_ext/hotplug_test.h | 15 + .../sched_ext/init_enable_count.bpf.c | 53 + .../selftests/sched_ext/init_enable_count.c | 157 + .../testing/selftests/sched_ext/maximal.bpf.c | 166 + tools/testing/selftests/sched_ext/maximal.c | 54 + .../selftests/sched_ext/maybe_null.bpf.c | 36 + .../testing/selftests/sched_ext/maybe_null.c | 49 + .../sched_ext/maybe_null_fail_dsp.bpf.c | 25 + .../sched_ext/maybe_null_fail_yld.bpf.c | 28 + .../testing/selftests/sched_ext/minimal.bpf.c | 21 + tools/testing/selftests/sched_ext/minimal.c | 58 + .../selftests/sched_ext/prog_run.bpf.c | 33 + tools/testing/selftests/sched_ext/prog_run.c | 78 + .../testing/selftests/sched_ext/reload_loop.c | 74 + tools/testing/selftests/sched_ext/runner.c | 212 + tools/testing/selftests/sched_ext/scx_test.h | 131 + .../selftests/sched_ext/select_cpu_dfl.bpf.c | 40 + .../selftests/sched_ext/select_cpu_dfl.c | 75 + .../sched_ext/select_cpu_dfl_nodispatch.bpf.c | 89 + .../sched_ext/select_cpu_dfl_nodispatch.c | 75 + .../sched_ext/select_cpu_dispatch.bpf.c | 41 + .../selftests/sched_ext/select_cpu_dispatch.c | 73 + .../select_cpu_dispatch_bad_dsq.bpf.c | 37 + .../sched_ext/select_cpu_dispatch_bad_dsq.c | 59 + .../select_cpu_dispatch_dbl_dsp.bpf.c | 38 + .../sched_ext/select_cpu_dispatch_dbl_dsp.c | 59 + .../sched_ext/select_cpu_vtime.bpf.c | 92 + .../selftests/sched_ext/select_cpu_vtime.c | 62 + .../selftests/sched_ext/test_example.c | 49 + tools/testing/selftests/sched_ext/util.c | 71 + tools/testing/selftests/sched_ext/util.h | 13 + 224 files changed, 24754 insertions(+), 3360 deletions(-) create mode 100644 Documentation/scheduler/sched-ext.rst create mode 100644 include/linux/sched/ext.h create mode 100644 include/trace/events/sched_ext.h delete mode 100644 kernel/bpf/bpf_struct_ops_types.h create mode 100644 kernel/sched/ext.c create mode 100644 kernel/sched/ext.h create mode 100644 kernel/sched/ext_idle.c create mode 100644 kernel/sched/ext_idle.h create mode 100644 kernel/sched/syscalls.c create mode 100644 tools/sched_ext/.gitignore create mode 100644 tools/sched_ext/Makefile create mode 100644 tools/sched_ext/README.md create mode 100644 tools/sched_ext/include/bpf-compat/gnu/stubs.h create mode 100644 tools/sched_ext/include/scx/common.bpf.h create mode 100644 tools/sched_ext/include/scx/common.h create mode 100644 tools/sched_ext/include/scx/compat.bpf.h create mode 100644 tools/sched_ext/include/scx/compat.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.h create mode 100644 tools/sched_ext/include/scx/enums.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.h create mode 100644 tools/sched_ext/include/scx/user_exit_info.h create mode 100644 tools/sched_ext/scx_central.bpf.c create mode 100644 tools/sched_ext/scx_central.c create mode 100644 tools/sched_ext/scx_flatcg.bpf.c create mode 100644 tools/sched_ext/scx_flatcg.c create mode 100644 tools/sched_ext/scx_flatcg.h create mode 100644 tools/sched_ext/scx_qmap.bpf.c create mode 100644 tools/sched_ext/scx_qmap.c create mode 100644 tools/sched_ext/scx_show_state.py create mode 100644 tools/sched_ext/scx_simple.bpf.c create mode 100644 tools/sched_ext/scx_simple.c create mode 100644 tools/testing/selftests/bpf/prog_tests/global_func_dead_code.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c rename tools/testing/selftests/bpf/progs/{bpf_iter_task_vma.c => bpf_iter_task_vmas.c} (100%) rename tools/testing/selftests/bpf/progs/{bpf_iter_task.c => bpf_iter_tasks.c} (100%) create mode 100644 tools/testing/selftests/bpf/progs/freplace_dead_global_func.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_failure.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_vma.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null_fail.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_module.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_bits_iter.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_global_subprogs.c create mode 100644 tools/testing/selftests/sched_ext/.gitignore create mode 100644 tools/testing/selftests/sched_ext/Makefile create mode 100644 tools/testing/selftests/sched_ext/config create mode 100644 tools/testing/selftests/sched_ext/create_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/create_dsq.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.bpf.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.c create mode 100644 tools/testing/selftests/sched_ext/exit.bpf.c create mode 100644 tools/testing/selftests/sched_ext/exit.c create mode 100644 tools/testing/selftests/sched_ext/exit_test.h create mode 100644 tools/testing/selftests/sched_ext/hotplug.bpf.c create mode 100644 tools/testing/selftests/sched_ext/hotplug.c create mode 100644 tools/testing/selftests/sched_ext/hotplug_test.h create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.bpf.c create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.c create mode 100644 tools/testing/selftests/sched_ext/maximal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maximal.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_yld.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.bpf.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.c create mode 100644 tools/testing/selftests/sched_ext/reload_loop.c create mode 100644 tools/testing/selftests/sched_ext/runner.c create mode 100644 tools/testing/selftests/sched_ext/scx_test.h create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.c create mode 100644 tools/testing/selftests/sched_ext/test_example.c create mode 100644 tools/testing/selftests/sched_ext/util.c create mode 100644 tools/testing/selftests/sched_ext/util.h -- 2.34.1

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[openeuler:openEuler-1.0-LTS 1944/1944] drivers/gpio/gpio-phytium-platform.c:111:2-3: Unneeded semicolon
by kernel test robot 17 Dec '25

17 Dec '25

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 49bc452fdcb1e9ec3f9bb20cd3e15b865a2933fd commit: 00711bad7e372a30c4975ba43811ffa666aff0e1 [1944/1944] gpio: add phytium gpio driver config: arm64-randconfig-r052-20251217 (https://download.01.org/0day-ci/archive/20251217/202512170821.DRlMQdsB-lkp@…) compiler: aarch64-linux-gcc (GCC) 9.5.0 If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512170821.DRlMQdsB-lkp@intel.com/ cocci warnings: (new ones prefixed by >>) >> drivers/gpio/gpio-phytium-platform.c:111:2-3: Unneeded semicolon vim +111 drivers/gpio/gpio-phytium-platform.c 35 36 static int phytium_gpio_probe(struct platform_device *pdev) 37 { 38 struct device *dev = &pdev->dev; 39 struct resource *res; 40 struct phytium_gpio *gpio; 41 struct gpio_irq_chip *girq; 42 struct fwnode_handle *fwnode; 43 int err, irq_count; 44 45 gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL); 46 if (!gpio) 47 return -ENOMEM; 48 49 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 50 gpio->regs = devm_ioremap_resource(&pdev->dev, res); 51 if (IS_ERR(gpio->regs)) 52 return PTR_ERR(gpio->regs); 53 54 if (!device_get_child_node_count(dev)) 55 return -ENODEV; 56 57 device_for_each_child_node(dev, fwnode) { 58 int idx; 59 60 if (fwnode_property_read_u32(fwnode, "reg", &idx) || 61 idx >= MAX_NPORTS) { 62 dev_err(dev, "missing/invalid port index\n"); 63 fwnode_handle_put(fwnode); 64 return -EINVAL; 65 } 66 67 if (fwnode_property_read_u32(fwnode, "nr-gpios", 68 &gpio->ngpio[idx])) { 69 dev_info(dev, 70 "failed to get number of gpios for Port%c\n", 71 idx ? 'B' : 'A'); 72 gpio->ngpio[idx] = NGPIO_DEFAULT; 73 } 74 } 75 76 /* irq_chip support */ 77 gpio->irq_chip.name = dev_name(dev); 78 gpio->irq_chip.irq_ack = phytium_gpio_irq_ack; 79 gpio->irq_chip.irq_mask = phytium_gpio_irq_mask; 80 gpio->irq_chip.irq_unmask = phytium_gpio_irq_unmask; 81 gpio->irq_chip.irq_set_type = phytium_gpio_irq_set_type; 82 gpio->irq_chip.irq_enable = phytium_gpio_irq_enable; 83 gpio->irq_chip.irq_disable = phytium_gpio_irq_disable; 84 #ifdef CONFIG_SMP 85 gpio->irq_chip.irq_set_affinity = phytium_gpio_irq_set_affinity; 86 #endif 87 raw_spin_lock_init(&gpio->lock); 88 89 gpio->gc.base = -1; 90 gpio->gc.get_direction = phytium_gpio_get_direction; 91 gpio->gc.direction_input = phytium_gpio_direction_input; 92 gpio->gc.direction_output = phytium_gpio_direction_output; 93 gpio->gc.get = phytium_gpio_get; 94 gpio->gc.set = phytium_gpio_set; 95 gpio->gc.ngpio = gpio->ngpio[0] + gpio->ngpio[1]; 96 gpio->gc.label = dev_name(dev); 97 gpio->gc.parent = dev; 98 gpio->gc.owner = THIS_MODULE; 99 100 girq = &gpio->gc.irq; 101 girq->handler = handle_bad_irq; 102 girq->default_type = IRQ_TYPE_NONE; 103 104 for (irq_count = 0; irq_count < gpio->ngpio[0]; irq_count++) { 105 gpio->irq[irq_count] = -ENXIO; 106 gpio->irq[irq_count] = platform_get_irq(pdev, irq_count); 107 if (gpio->irq[irq_count] < 0) { 108 dev_warn(dev, "no irq is found.\n"); 109 break; 110 } > 111 }; 112 113 girq->num_parents = irq_count; 114 girq->parents = gpio->irq; 115 girq->parent_handler = phytium_gpio_irq_handler; 116 117 girq->chip = &gpio->irq_chip; 118 119 err = devm_gpiochip_add_data(dev, &gpio->gc, gpio); 120 if (err) 121 return err; 122 123 platform_set_drvdata(pdev, gpio); 124 dev_info(dev, "Phytium GPIO controller @%pa registered\n", 125 &res->start); 126 127 return 0; 128 } 129 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:openEuler-1.0-LTS 1944/1944] include/uapi/../../drivers/scsi/isci/isci.h:531:1: error: attempted to randomize userland API struct sci_base_state
by kernel test robot 17 Dec '25

17 Dec '25

Hi Jason, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 49bc452fdcb1e9ec3f9bb20cd3e15b865a2933fd commit: 28617d9631dc65be773b8a28718e8614558caa5f [1944/1944] scsi: libsas: Abort all in-flight requests when device is gone config: arm64-randconfig-001-20251217 (https://download.01.org/0day-ci/archive/20251217/202512170724.x8psWT4W-lkp@…) compiler: aarch64-linux-gcc (GCC) 7.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251217/202512170724.x8psWT4W-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512170724.x8psWT4W-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from include/uapi/../../drivers/scsi/isci/remote_node_context.h:67:0, from include/uapi/../../drivers/scsi/isci/remote_device.h:61, from drivers/scsi/libsas/sas_discover.c:36: >> include/uapi/../../drivers/scsi/isci/isci.h:531:1: error: attempted to randomize userland API struct sci_base_state }; ^ vim +531 include/uapi/../../drivers/scsi/isci/isci.h 12ef65444de9d3 Edmund Nadolski 2011-06-02 527 12ef65444de9d3 Edmund Nadolski 2011-06-02 528 struct sci_base_state { 12ef65444de9d3 Edmund Nadolski 2011-06-02 529 sci_state_transition_t enter_state; /* Called on state entry */ 12ef65444de9d3 Edmund Nadolski 2011-06-02 530 sci_state_transition_t exit_state; /* Called on state exit */ 12ef65444de9d3 Edmund Nadolski 2011-06-02 @531 }; 12ef65444de9d3 Edmund Nadolski 2011-06-02 532 :::::: The code at line 531 was first introduced by commit :::::: 12ef65444de9d387a383b9991960848bed5bbe74 isci: additional state machine cleanup :::::: TO: Edmund Nadolski <edmund.nadolski(a)intel.com> :::::: CC: Dan Williams <dan.j.williams(a)intel.com> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:openEuler-1.0-LTS 1943/1943] lib/idr.o: warning: objtool: missing symbol for section .text
by kernel test robot 17 Dec '25

17 Dec '25

Hi Xia, First bad commit (maybe != root cause): tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 49bc452fdcb1e9ec3f9bb20cd3e15b865a2933fd commit: eaab6483a9cc9c59427c23d4b45c9990d2888f78 [1943/1943] ida: don't use BUG_ON() for debugging config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20251217/202512170545.AQrGseNI-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 1335a05ab8bc8339ce24be3a9da89d8c3f4e0571) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251217/202512170545.AQrGseNI-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512170545.AQrGseNI-lkp@intel.com/ All warnings (new ones prefixed by >>): >> lib/idr.o: warning: objtool: missing symbol for section .text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:openEuler-1.0-LTS 1943/1943] arch/x86/mm/maccess.o: warning: objtool: missing symbol for section .text
by kernel test robot 17 Dec '25

17 Dec '25

Hi Daniel, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 49bc452fdcb1e9ec3f9bb20cd3e15b865a2933fd commit: 22058d2bdaf6b0526395ceec2736c72c3b5f435a [1943/1943] uaccess: Add strict non-pagefault kernel-space read function config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20251217/202512170330.xeDXc5AM-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 1335a05ab8bc8339ce24be3a9da89d8c3f4e0571) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251217/202512170330.xeDXc5AM-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512170330.xeDXc5AM-lkp@intel.com/ All warnings (new ones prefixed by >>): >> arch/x86/mm/maccess.o: warning: objtool: missing symbol for section .text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH openEuler-26.09 0/4] test
by Zicheng Qu 16 Dec '25

16 Dec '25

Jiri Olsa (2): bpf: Add missed value to kprobe perf link info bpf: Add cookie to perf_event bpf_link_info records Zicheng Qu (2): bpf: Fix kabi for missed in bpf_link_info bpf: Fix kabi for cookie in bpf_link_info include/linux/trace_events.h | 6 ++++-- include/uapi/linux/bpf.h | 15 +++++++++++++++ kernel/bpf/syscall.c | 18 ++++++++++++------ kernel/trace/bpf_trace.c | 5 +++-- kernel/trace/trace_kprobe.c | 14 +++++++++++--- tools/include/uapi/linux/bpf.h | 7 +++++++ 6 files changed, 52 insertions(+), 13 deletions(-) -- 2.34.1

2 5

[PATCH openEuler-26.09 000/399] sched_ext patch
by Zicheng Qu 16 Dec '25

16 Dec '25

Aboorva Devarajan (2): sched_ext: Documentation: Remove mentions of scx_bpf_switch_all sched: Pass correct scheduling policy to __setscheduler_class Alexander Lobakin (1): bitops: make BYTES_TO_BITS() treewide-available Alexei Starovoitov (1): selftests/bpf: modify test_loader that didn't support running bpf_prog_type_syscall programs Andrea Righi (32): sched_ext: fix typo in set_weight() description sched_ext: add CONFIG_DEBUG_INFO_BTF dependency sched_ext: Provide a sysfs enable_seq counter sched_ext: improve WAKE_SYNC behavior for default idle CPU selection sched_ext: Clarify ops.select_cpu() for single-CPU tasks sched_ext: Introduce LLC awareness to the default idle selection policy sched_ext: Introduce NUMA awareness to the default idle selection policy sched_ext: Do not enable LLC/NUMA optimizations when domains overlap sched_ext: Fix incorrect use of bitwise AND MAINTAINERS: add self as reviewer for sched_ext sched_ext: idle: Refresh idle masks during idle-to-idle transitions sched_ext: Use the NUMA scheduling domain for NUMA optimizations sched_ext: idle: use assign_cpu() to update the idle cpumask sched_ext: idle: clarify comments sched_ext: idle: introduce check_builtin_idle_enabled() helper sched_ext: idle: small CPU iteration refactoring sched_ext: update scx_bpf_dsq_insert() doc for SCX_DSQ_LOCAL_ON sched_ext: Include remaining task time slice in error state dump sched_ext: Include task weight in the error state dump selftests/sched_ext: Fix enum resolution tools/sched_ext: Add helper to check task migration state sched_ext: selftests/dsp_local_on: Fix selftest on UP systems sched_ext: Fix lock imbalance in dispatch_to_local_dsq() selftests/sched_ext: Fix exit selftest hang on UP sched_ext: Move built-in idle CPU selection policy to a separate file sched_ext: Track currently locked rq sched_ext: Make scx_locked_rq() inline sched_ext: Fix missing rq lock in scx_bpf_cpuperf_set() sched/ext: Fix invalid task state transitions on class switch sched_ext: Make scx_kf_allowed_if_unlocked() available outside ext.c sched_ext: Remove duplicate BTF_ID_FLAGS definitions sched_ext: Fix rq lock state in hotplug ops Andrii Nakryiko (7): bpf: extract iterator argument type and name validation logic bpf: allow passing struct bpf_iter_<type> as kfunc arguments selftests/bpf: test passing iterator to a kfunc bpf: Emit global subprog name in verifier logs bpf: Validate global subprogs lazily selftests/bpf: Add lazy global subprog validation tests selftests/bpf: validate eliminated global subprog is not freplaceable Arnaldo Carvalho de Melo (1): tools include UAPI: Sync linux/sched.h copy with the kernel sources Atul Kumar Pant (1): sched_ext: Fixes typos in comments Benjamin Tissoires (1): bpf: introduce in_sleepable() helper Bitao Hu (4): genirq: Convert kstat_irqs to a struct genirq: Provide a snapshot mechanism for interrupt statistics watchdog/softlockup: Low-overhead detection of interrupt storm watchdog/softlockup: Report the most frequent interrupts Björn Töpel (1): selftests: sched_ext: Add sched_ext as proper selftest target Breno Leitao (3): rhashtable: Fix potential deadlock by moving schedule_work outside lock sched_ext: Use kvzalloc for large exit_dump allocation sched/ext: Prevent update_locked_rq() calls with NULL rq Changwoo Min (11): sched_ext: Clarify sched_ext_ops table for userland scheduler sched_ext: add a missing rcu_read_lock/unlock pair at scx_select_cpu_dfl() MAINTAINERS: add me as reviewer for sched_ext sched_ext: Replace rq_lock() to raw_spin_rq_lock() in scx_ops_bypass() sched_ext: Relocate scx_enabled() related code sched_ext: Implement scx_bpf_now() sched_ext: Add scx_bpf_now() for BPF scheduler sched_ext: Add time helpers for BPF schedulers sched_ext: Replace bpf_ktime_get_ns() to scx_bpf_now() sched_ext: Use time helpers in BPF schedulers sched_ext: Fix incorrect time delta calculation in time_delta() Christian Brauner (1): file: add take_fd() cleanup helper Christian Loehle (1): sched/fair: Remove stale FREQUENCY_UTIL comment Chuyi Zhou (15): cgroup: Prepare for using css_task_iter_*() in BPF bpf: Introduce css_task open-coded iterator kfuncs bpf: Introduce task open coded iterator kfuncs bpf: Introduce css open-coded iterator kfuncs bpf: teach the verifier to enforce css_iter and task_iter in RCU CS bpf: Let bpf_iter_task_new accept null task ptr selftests/bpf: rename bpf_iter_task.c to bpf_iter_tasks.c selftests/bpf: Add tests for open-coded task and css iter bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg bpf: Relax allowlist for css_task iter selftests/bpf: Add tests for css_task iter combining with cgroup iter selftests/bpf: Add test for using css_task iter in sleepable progs selftests/bpf: get trusted cgrp from bpf_iter__cgroup directly sched_ext: Fix the incorrect bpf_list kfunc API in common.bpf.h. sched_ext: Use SCX_CALL_OP_TASK in task_tick_scx Colin Ian King (1): sched_ext: Fix spelling mistake: "intead" -> "instead" Daniel Xu (3): bpf: btf: Support flags for BTF_SET8 sets bpf: btf: Add BTF_KFUNCS_START/END macro pair bpf: treewide: Annotate BPF kfuncs in BTF Dave Marchevsky (5): bpf: Don't explicitly emit BTF for struct btf_iter_num selftests/bpf: Rename bpf_iter_task_vma.c to bpf_iter_task_vmas.c bpf: Introduce task_vma open-coded iterator kfuncs selftests/bpf: Add tests for open-coded task_vma iter bpf: Add __bpf_kfunc_{start,end}_defs macros David Vernet (15): bpf: Add ability to pin bpf timer to calling CPU selftests/bpf: Test pinning bpf timer to a core sched_ext: Implement runnable task stall watchdog sched_ext: Print sched_ext info when dumping stack sched_ext: Implement SCX_KICK_WAIT sched_ext: Implement sched_ext_ops.cpu_acquire/release() sched_ext: Add selftests bpf: Load vmlinux btf for any struct_ops map sched_ext: Make scx_bpf_cpuperf_set() @cpu arg signed scx: Allow calling sleepable kfuncs from BPF_PROG_TYPE_SYSCALL scx/selftests: Verify we can call create_dsq from prog_run sched_ext: Remove unnecessary cpu_relax() scx: Fix exit selftest to use custom DSQ scx: Fix raciness in scx_ops_bypass() scx: Fix maximal BPF selftest prog Dawei Li (1): genirq: Deduplicate interrupt descriptor initialization Devaansh Kumar (1): sched_ext: selftests: Fix grammar in tests description Devaansh-Kumar (1): sched_ext: Documentation: Update instructions for running example schedulers Geliang Tang (1): bpf, btf: Check btf for register_bpf_struct_ops Henry Huang (2): sched_ext: initialize kit->cursor.flags sched_ext: keep running prev when prev->scx.slice != 0 Herbert Xu (1): rhashtable: Fix rhashtable_try_insert test Honglei Wang (3): sched_ext: use correct function name in pick_task_scx() warning message sched_ext: Add __weak to fix the build errors sched_ext: switch class when preempted by higher priority scheduler Hongyan Xia (1): sched/ext: Add BPF function to fetch rq Hou Tao (7): bpf: Free dynamically allocated bits in bpf_iter_bits_destroy() bpf: Add bpf_mem_alloc_check_size() helper bpf: Check the validity of nr_words in bpf_iter_bits_new() bpf: Use __u64 to save the bits in bits iterator selftests/bpf: Add three test cases for bits_iter selftests/bpf: Use -4095 as the bad address for bits iterator selftests/bpf: Export map_update_retriable() Ihor Solodrai (2): selftests/sched_ext: add order-only dependency of runner.o on BPFOBJ selftests/sched_ext: fix build after renames in sched_ext API Ilpo Järvinen (1): <linux/cleanup.h>: Allow the passing of both iomem and non-iomem pointers to no_free_ptr() Ingo Molnar (3): sched/syscalls: Split out kernel/sched/syscalls.c from kernel/sched/core.c sched/fair: Rename check_preempt_wakeup() to check_preempt_wakeup_fair() sched/fair: Rename check_preempt_curr() to wakeup_preempt() Jake Hillion (1): sched_ext: create_dsq: Return -EEXIST on duplicate request Jiapeng Chong (1): sched_ext: Fixes incorrect type in bpf_scx_init() Jiayuan Chen (1): selftests/bpf: Fixes for test_maps test Jiri Olsa (2): bpf: Add missed value to kprobe perf link info bpf: Add cookie to perf_event bpf_link_info records Kui-Feng Lee (28): bpf: refactory struct_ops type initialization to a function. bpf: get type information with BTF_ID_LIST bpf, net: introduce bpf_struct_ops_desc. bpf: add struct_ops_tab to btf. bpf: make struct_ops_map support btfs other than btf_vmlinux. bpf: pass btf object id in bpf_map_info. bpf: lookup struct_ops types from a given module BTF. bpf: pass attached BTF to the bpf_struct_ops subsystem bpf: hold module refcnt in bpf_struct_ops map creation and prog verification. bpf: validate value_type bpf, net: switch to dynamic registration libbpf: Find correct module BTFs for struct_ops maps and progs. bpf: export btf_ctx_access to modules. selftests/bpf: test case for register_bpf_struct_ops(). bpf: Fix error checks against bpf_get_btf_vmlinux(). bpf: Move __kfunc_param_match_suffix() to btf.c. bpf: Remove an unnecessary check. bpf: add btf pointer to struct bpf_ctx_arg_aux. bpf: Create argument information for nullable arguments. selftests/bpf: Suppress warning message of an unused variable. selftests/bpf: Test PTR_MAYBE_NULL arguments of struct_ops operators. libbpf: Set btf_value_type_id of struct bpf_map for struct_ops. libbpf: Convert st_ops->data to shadow type. bpftool: Generated shadow variables for struct_ops maps. bpftool: Add an example for struct_ops map and shadow type. selftests/bpf: Test if shadow types work correctly. bpf, net: validate struct_ops when updating value. bpf: struct_ops supports more than one page for trampolines. Kumar Kartikeya Dwivedi (4): bpf: Allow calling static subprogs while holding a bpf_spin_lock selftests/bpf: Add test for static subprog call in lock cs bpf: Transfer RCU lock state between subprog calls selftests/bpf: Add tests for RCU lock transfer between subprogs Liang Jie (1): sched_ext: Use sizeof_field for key_len in dsq_hash_params Manu Bretelle (1): sched_ext: define missing cfi stubs for sched_ext Martin KaFai Lau (3): libbpf: Ensure undefined bpf_attr field stays 0 bpf: Reject struct_ops registration that uses module ptr and the module btf_id is missing bpf: Use kallsyms to find the function name of a struct_ops's stub function Matthieu Baerts (1): bpf: fix compilation error without CGROUPS Peter Zijlstra (20): cleanup: Make no_free_ptr() __must_check sched: Simplify set_user_nice() sched: Simplify syscalls sched: Simplify sched_{set,get}affinity() sched: Simplify yield_to() sched: Simplify sched_rr_get_interval() sched: Simplify sched_move_task() sched: Misc cleanups sched/deadline: Move bandwidth accounting into {en,de}queue_dl_entity sched: Allow sched_class::dequeue_task() to fail sched: Unify runtime accounting across classes sched: Use set_next_task(.first) where required sched/fair: Cleanup pick_task_fair() vs throttle sched/fair: Cleanup pick_task_fair()'s curr sched/fair: Unify pick_{,next_}_task_fair() sched: Fixup set_next_task() implementations sched: Split up put_prev_task_balance() sched: Rework pick_next_task() sched: Combine the last put_prev_task() and the first set_next_task() sched: Add put_prev_task(.next) Pu Lehui (1): riscv, bpf: Fix out-of-bounds issue when preparing trampoline image Randy Dunlap (1): sched_ext: fix kernel-doc warnings Shizhao Chen (1): sched_ext: Add option -l in selftest runner to list all available tests Song Liu (8): bpf: Charge modmem for struct_ops trampoline bpf: Let bpf_prog_pack_free handle any pointer bpf: Adjust argument names of arch_prepare_bpf_trampoline() bpf: Add helpers for trampoline image management bpf, x86: Adjust arch_prepare_bpf_trampoline return value bpf: Add arch_bpf_trampoline_size() bpf: Use arch_bpf_trampoline_size x86, bpf: Use bpf_prog_pack for bpf trampoline T.J. Mercier (1): bpf, docs: Fix broken link to renamed bpf_iter_task_vmas.c Tejun Heo (148): sched: Restructure sched_class order sanity checks in sched_init() sched: Allow sched_cgroup_fork() to fail and introduce sched_cancel_fork() sched: Add sched_class->reweight_task() sched: Add sched_class->switching_to() and expose check_class_changing/changed() sched: Factor out cgroup weight conversion functions sched: Factor out update_other_load_avgs() from __update_blocked_others() sched: Add normal_policy() sched_ext: Add boilerplate for extensible scheduler class sched_ext: Implement BPF extensible scheduler class sched_ext: Add scx_simple and scx_example_qmap example schedulers sched_ext: Add sysrq-S which disables the BPF scheduler sched_ext: Allow BPF schedulers to disallow specific tasks from joining SCHED_EXT sched_ext: Print debug dump after an error exit tools/sched_ext: Add scx_show_state.py sched_ext: Implement scx_bpf_kick_cpu() and task preemption support sched_ext: Add a central scheduler which makes all scheduling decisions on one CPU sched_ext: Make watchdog handle ops.dispatch() looping stall sched_ext: Add task state tracking operations sched_ext: Implement tickless support sched_ext: Track tasks that are subjects of the in-flight SCX operation sched_ext: Implement sched_ext_ops.cpu_online/offline() sched_ext: Bypass BPF scheduler while PM events are in progress sched_ext: Implement core-sched support sched_ext: Add vtime-ordered priority queue to dispatch_q's sched_ext: Documentation: scheduler: Document extensible scheduler class sched, sched_ext: Replace scx_next_task_picked() with sched_class->switch_class() cpufreq_schedutil: Refactor sugov_cpu_is_busy() sched_ext: Add cpuperf support sched_ext: Drop tools_clean target from the top-level Makefile sched_ext: Swap argument positions in kcalloc() call to avoid compiler warning sched, sched_ext: Simplify dl_prio() case handling in sched_fork() sched_ext: Account for idle policy when setting p->scx.weight in scx_ops_enable_task() sched_ext: Disallow loading BPF scheduler if isolcpus= domain isolation is in effect sched_ext: Minor cleanups in kernel/sched/ext.h sched, sched_ext: Open code for_balance_class_range() sched, sched_ext: Move some declarations from kernel/sched/ext.h to sched.h sched_ext: Take out ->priq and ->flags from scx_dsq_node sched_ext: Implement DSQ iterator sched_ext/scx_qmap: Add an example usage of DSQ iterator sched_ext: Reimplement scx_bpf_reenqueue_local() sched_ext: Make scx_bpf_reenqueue_local() skip tasks that are being migrated sched: Move struct balance_callback definition upward sched_ext: Unpin and repin rq lock from balance_scx() sched_ext: s/SCX_RQ_BALANCING/SCX_RQ_IN_BALANCE/ and add SCX_RQ_IN_WAKEUP sched_ext: Allow SCX_DSQ_LOCAL_ON for direct dispatches sched_ext/scx_qmap: Pick idle CPU for direct dispatch on !wakeup enqueues sched_ext: Build fix on !CONFIG_STACKTRACE[_SUPPORT] sched_ext: Allow p->scx.disallow only while loading sched_ext: Simplify scx_can_stop_tick() invocation in sched_can_stop_tick() sched_ext: Add scx_enabled() test to @start_class promotion in put_prev_task_balance() sched_ext: Use update_curr_common() in update_curr_scx() sched_ext: Simplify UP support by enabling sched_class->balance() in UP sched_ext: Improve comment on idle_sched_class exception in scx_task_iter_next_locked() sched_ext: Make task_can_run_on_remote_rq() use common task_allowed_on_cpu() sched_ext: Fix unsafe list iteration in process_ddsp_deferred_locals() sched_ext: Make scx_rq_online() also test cpu_active() in addition to SCX_RQ_ONLINE sched_ext: Improve logging around enable/disable sched_ext: Don't use double locking to migrate tasks across CPUs scx_central: Fix smatch checker warning sched_ext: Add missing cfi stub for ops.tick sched_ext: Use task_can_run_on_remote_rq() test in dispatch_to_local_dsq() sched_ext: Use sched_clock_cpu() instead of rq_clock_task() in touch_core_sched() sched_ext: Don't call put_prev_task_scx() before picking the next task sched_ext: Replace SCX_TASK_BAL_KEEP with SCX_RQ_BAL_KEEP sched_ext: Unify regular and core-sched pick task paths sched_ext: Relocate functions in kernel/sched/ext.c sched_ext: Remove switch_class_scx() sched_ext: Remove sched_class->switch_class() sched_ext: TASK_DEAD tasks must be switched out of SCX on ops_disable sched_ext: TASK_DEAD tasks must be switched into SCX on ops_enable sched: Expose css_tg() sched: Make cpu_shares_read_u64() use tg_weight() sched: Introduce CONFIG_GROUP_SCHED_WEIGHT sched_ext: Add cgroup support sched_ext: Add a cgroup scheduler which uses flattened hierarchy sched_ext: Temporarily work around pick_task_scx() being called without balance_scx() sched_ext: Add missing static to scx_has_op[] sched_ext: Add missing static to scx_dump_data sched_ext: Rename scx_kfunc_set_sleepable to unlocked and relocate sched_ext: Refactor consume_remote_task() sched_ext: Make find_dsq_for_dispatch() handle SCX_DSQ_LOCAL_ON sched_ext: Fix processs_ddsp_deferred_locals() by unifying DTL_INVALID handling sched_ext: Restructure dispatch_to_local_dsq() sched_ext: Reorder args for consume_local/remote_task() sched_ext: Move sanity check and dsq_mod_nr() into task_unlink_from_dsq() sched_ext: Move consume_local_task() upward sched_ext: Replace consume_local_task() with move_local_task_to_local_dsq() sched_ext: Compact struct bpf_iter_scx_dsq_kern sched_ext: Implement scx_bpf_dispatch[_vtime]_from_dsq() scx_qmap: Implement highpri boosting sched_ext: Synchronize bypass state changes with rq lock sched_ext: Don't trigger ops.quiescent/runnable() on migrations sched_ext: Fix build when !CONFIG_STACKTRACE sched_ext: Build fix for !CONFIG_SMP sched_ext: Add __COMPAT helpers for features added during v6.12 devel cycle tools/sched_ext: Receive misc updates from SCX repo scx_flatcg: Use a user DSQ for fallback instead of SCX_DSQ_GLOBAL sched_ext: Allow only user DSQs for scx_bpf_consume(), scx_bpf_dsq_nr_queued() and bpf_iter_scx_dsq_new() sched_ext: Relocate find_user_dsq() sched_ext: Split the global DSQ per NUMA node sched_ext: Use shorter slice while bypassing sched_ext: Relocate check_hotplug_seq() call in scx_ops_enable() sched_ext: Remove SCX_OPS_PREPPING sched_ext: Initialize in bypass mode sched_ext: Fix SCX_TASK_INIT -> SCX_TASK_READY transitions in scx_ops_enable() sched_ext: Enable scx_ops_init_task() separately sched_ext: Add scx_cgroup_enabled to gate cgroup operations and fix scx_tg_online() sched_ext: Decouple locks in scx_ops_disable_workfn() sched_ext: Decouple locks in scx_ops_enable() sched_ext: Improve error reporting during loading sched_ext: scx_cgroup_exit() may be called without successful scx_cgroup_init() sched/core: Make select_task_rq() take the pointer to wake_flags instead of value sched/core: Add ENQUEUE_RQ_SELECTED to indicate whether ->select_task_rq() was called sched_ext, scx_qmap: Add and use SCX_ENQ_CPU_SELECTED Revert "sched_ext: Use shorter slice while bypassing" sched_ext: Start schedulers with consistent p->scx.slice values sched_ext: Move scx_buildin_idle_enabled check to scx_bpf_select_cpu_dfl() sched_ext: bypass mode shouldn't depend on ops.select_cpu() sched_ext: Move scx_tasks_lock handling into scx_task_iter helpers sched_ext: Don't hold scx_tasks_lock for too long sched_ext: Make cast_mask() inline sched_ext: Fix enq_last_no_enq_fails selftest sched_ext: Add a missing newline at the end of an error message sched_ext: Update scx_show_state.py to match scx_ops_bypass_depth's new type sched_ext: Handle cases where pick_task_scx() is called without preceding balance_scx() sched_ext: ops.cpu_acquire() should be called with SCX_KF_REST sched_ext: Factor out move_task_between_dsqs() from scx_dispatch_from_dsq() sched_ext: Rename CFI stubs to names that are recognized by BPF sched_ext: Replace set_arg_maybe_null() with __nullable CFI stub tags sched_ext: Avoid live-locking bypass mode switching sched_ext: Enable the ops breather and eject BPF scheduler on softlockup sched_ext: scx_bpf_dispatch_from_dsq_set_*() are allowed from unlocked context sched_ext: Rename scx_bpf_dispatch[_vtime]() to scx_bpf_dsq_insert[_vtime]() sched_ext: Rename scx_bpf_consume() to scx_bpf_dsq_move_to_local() sched_ext: Rename scx_bpf_dispatch[_vtime]_from_dsq*() -> scx_bpf_dsq_move[_vtime]*() sched_ext: Fix invalid irq restore in scx_ops_bypass() sched_ext: Fix dsq_local_on selftest tools/sched_ext: Receive updates from SCX repo sched_ext: selftests/dsp_local_on: Fix sporadic failures sched_ext: Fix incorrect autogroup migration detection sched_ext: Implement auto local dispatching of migration disabled tasks sched_ext: Fix migration disabled handling in targeted dispatches sched_ext: Fix incorrect assumption about migration disabled tasks in task_can_run_on_remote_rq() sched_ext: Fix pick_task_scx() picking non-queued tasks when it's called without balance() sched_ext: Implement SCX_OPS_ALLOW_QUEUED_WAKEUP sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator sched_ext: Make scx_group_set_weight() always update tg->scx.weight sched_ext, sched/core: Don't call scx_group_set_weight() prematurely from sched_create_group() Thomas Gleixner (1): sched/ext: Remove sched_fork() hack Thorsten Blum (1): sched_ext: Use str_enabled_disabled() helper in update_selcpu_topology() Tianchen Ding (1): sched_ext: Use btf_ids to resolve task_struct Vincent Guittot (3): sched/cpufreq: Rework schedutil governor performance estimation sched/fair: Fix frequency selection for non-invariant case sched/fair: Fix sched_can_stop_tick() for fair tasks Vishal Chourasia (2): sched_ext: Add __weak markers to BPF helper function decalarations sched_ext: Fix function pointer type mismatches in BPF selftests Wenyu Huang (1): sched/doc: Update documentation after renames and synchronize Chinese version Yafang Shao (2): bpf: Add bits iterator selftests/bpf: Add selftest for bits iter Yipeng Zou (1): sched_ext: Allow dequeue_task_scx to fail Yiwei Lin (1): sched/fair: Remove unused 'curr' argument from pick_next_entity() Yu Liao (2): sched: Put task_group::idle under CONFIG_GROUP_SCHED_WEIGHT sched: Add dummy version of sched_group_set_idle() Yury Norov (1): cpumask: introduce assign_cpu() macro Zhang Qiao (3): sched_ext: Remove redundant p->nr_cpus_allowed checker sched/ext: Fix unmatch trailing comment of CONFIG_EXT_GROUP_SCHED sched/ext: Use tg_cgroup() to elieminate duplicate code Zhao Mengmeng (1): sched_ext: Replace scx_next_task_picked() with switch_class() in comment Zicheng Qu (25): bpf: Fix kabi for missed in bpf_link_info bpf: Fix kabi for cookie in bpf_link_info bpf: Fix kabi for value_type_btf_obj_fd in union bpf_attr bpf: Fix kabi for struct bpf_verifier_env selftest/bpf: Fix task_vma iter verification error bpf: Fix kabi for btf in struct bpf_ctx_arg_aux bpf: Fix kabi for called and verified in struct bpf_func_info_aux sched: Fix kabi for reweight_task in struct sched_class sched/syscalls: Fix kabi for EXPORT_SYMBOL moved from core.c to syscalls.c sched: Fix kabi for switching_to in struct sched_class sched/fair: Fix kabi for check_preempt_curr and wakeup_preempt in struct sched_class sched: Fix kabi for dequeue_task in struct sched_class sched_ext: Fix kabi for scx in struct task_struct sched_ext: Fix kabi for switch_class in struct sched_class sched: Fix kabi for exec_max in struct sched_statistics sched_ext: Fix kabi for balance in struct sched_class sched_ext: Fix kabi for header in kernel/sched/sched.h sched: Fix kabi pick_task in struct sched_class sched: Fix kabi for put_prev_task in struct sched_class sched_ext: Fix kabi for scx_flags and scx_weight in struct task_group sched: Fix kabi for int idle in struct task_group sched: Add __setscheduler_class() for sched_ext genirq: Fix kabi for kstat_irqs in struct irq_desc bpf: Fix kabi for size in struct bpf_tramp_image sched_ext: Enable sched_ext configs on arm64 guanjing (1): sched_ext: fix application of sizeof to pointer Documentation/bpf/bpf_iterators.rst | 2 +- Documentation/bpf/kfuncs.rst | 14 +- Documentation/scheduler/index.rst | 1 + Documentation/scheduler/sched-design-CFS.rst | 8 +- Documentation/scheduler/sched-ext.rst | 325 + .../zh_CN/scheduler/sched-design-CFS.rst | 8 +- MAINTAINERS | 14 + arch/arm64/configs/openeuler_defconfig | 2 + arch/arm64/net/bpf_jit_comp.c | 55 +- arch/mips/dec/setup.c | 2 +- arch/parisc/kernel/smp.c | 2 +- arch/powerpc/kvm/book3s_hv_rm_xics.c | 2 +- arch/riscv/net/bpf_jit_comp64.c | 43 +- arch/s390/net/bpf_jit_comp.c | 56 +- arch/x86/net/bpf_jit_comp.c | 130 +- drivers/hid/bpf/hid_bpf_dispatch.c | 8 +- drivers/tty/sysrq.c | 1 + include/asm-generic/vmlinux.lds.h | 1 + include/linux/bitops.h | 2 + include/linux/bpf.h | 101 +- include/linux/bpf_mem_alloc.h | 3 + include/linux/bpf_verifier.h | 22 +- include/linux/btf.h | 39 + include/linux/btf_ids.h | 21 +- include/linux/cgroup.h | 14 +- include/linux/cleanup.h | 42 +- include/linux/cpumask.h | 41 +- include/linux/energy_model.h | 1 - include/linux/file.h | 20 + include/linux/filter.h | 2 +- include/linux/irqdesc.h | 17 +- include/linux/kernel_stat.h | 8 + include/linux/sched.h | 8 +- include/linux/sched/ext.h | 216 + include/linux/sched/task.h | 8 +- include/linux/trace_events.h | 6 +- include/trace/events/sched_ext.h | 32 + include/uapi/linux/bpf.h | 32 +- include/uapi/linux/sched.h | 1 + init/Kconfig | 10 + init/init_task.c | 12 + kernel/Kconfig.preempt | 27 +- kernel/bpf/bpf_iter.c | 8 +- kernel/bpf/bpf_struct_ops.c | 730 +- kernel/bpf/bpf_struct_ops_types.h | 12 - kernel/bpf/btf.c | 254 +- kernel/bpf/cgroup_iter.c | 65 +- kernel/bpf/core.c | 21 +- kernel/bpf/cpumask.c | 10 +- kernel/bpf/dispatcher.c | 7 +- kernel/bpf/helpers.c | 186 +- kernel/bpf/map_iter.c | 10 +- kernel/bpf/memalloc.c | 14 +- kernel/bpf/syscall.c | 22 +- kernel/bpf/task_iter.c | 242 +- kernel/bpf/trampoline.c | 101 +- kernel/bpf/verifier.c | 309 +- kernel/cgroup/cgroup.c | 18 +- kernel/cgroup/rstat.c | 4 +- kernel/fork.c | 17 +- kernel/irq/Kconfig | 4 + kernel/irq/internals.h | 2 +- kernel/irq/irqdesc.c | 144 +- kernel/irq/proc.c | 5 +- kernel/sched/autogroup.c | 4 +- kernel/sched/build_policy.c | 13 + kernel/sched/core.c | 2492 +----- kernel/sched/cpufreq_schedutil.c | 89 +- kernel/sched/deadline.c | 175 +- kernel/sched/debug.c | 3 + kernel/sched/ext.c | 7242 +++++++++++++++++ kernel/sched/ext.h | 119 + kernel/sched/ext_idle.c | 752 ++ kernel/sched/ext_idle.h | 39 + kernel/sched/fair.c | 306 +- kernel/sched/idle.c | 31 +- kernel/sched/rt.c | 40 +- kernel/sched/sched.h | 473 +- kernel/sched/stop_task.c | 35 +- kernel/sched/syscalls.c | 1713 ++++ kernel/trace/bpf_trace.c | 15 +- kernel/trace/trace_kprobe.c | 14 +- kernel/trace/trace_probe.c | 2 - kernel/watchdog.c | 223 +- lib/Kconfig.debug | 14 + lib/dump_stack.c | 1 + lib/rhashtable.c | 12 +- net/bpf/bpf_dummy_struct_ops.c | 60 +- net/bpf/test_run.c | 15 +- net/core/filter.c | 29 +- net/core/xdp.c | 10 +- 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.../bpf/prog_tests/global_func_dead_code.c | 60 + .../testing/selftests/bpf/prog_tests/iters.c | 209 + .../selftests/bpf/prog_tests/rcu_read_lock.c | 6 + .../selftests/bpf/prog_tests/spin_lock.c | 2 + .../prog_tests/test_struct_ops_maybe_null.c | 46 + .../bpf/prog_tests/test_struct_ops_module.c | 86 + .../testing/selftests/bpf/prog_tests/timer.c | 4 + .../selftests/bpf/prog_tests/verifier.c | 4 + ...f_iter_task_vma.c => bpf_iter_task_vmas.c} | 0 .../{bpf_iter_task.c => bpf_iter_tasks.c} | 0 .../bpf/progs/freplace_dead_global_func.c | 11 + tools/testing/selftests/bpf/progs/iters_css.c | 72 + .../selftests/bpf/progs/iters_css_task.c | 102 + .../testing/selftests/bpf/progs/iters_task.c | 41 + .../selftests/bpf/progs/iters_task_failure.c | 105 + .../selftests/bpf/progs/iters_task_vma.c | 54 + .../selftests/bpf/progs/iters_testmod_seq.c | 50 + .../selftests/bpf/progs/rcu_read_lock.c | 120 + .../bpf/progs/struct_ops_maybe_null.c | 29 + .../bpf/progs/struct_ops_maybe_null_fail.c | 24 + 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.../selftests/sched_ext/test_example.c | 49 + tools/testing/selftests/sched_ext/util.c | 71 + tools/testing/selftests/sched_ext/util.h | 13 + 224 files changed, 24754 insertions(+), 3360 deletions(-) create mode 100644 Documentation/scheduler/sched-ext.rst create mode 100644 include/linux/sched/ext.h create mode 100644 include/trace/events/sched_ext.h delete mode 100644 kernel/bpf/bpf_struct_ops_types.h create mode 100644 kernel/sched/ext.c create mode 100644 kernel/sched/ext.h create mode 100644 kernel/sched/ext_idle.c create mode 100644 kernel/sched/ext_idle.h create mode 100644 kernel/sched/syscalls.c create mode 100644 tools/sched_ext/.gitignore create mode 100644 tools/sched_ext/Makefile create mode 100644 tools/sched_ext/README.md create mode 100644 tools/sched_ext/include/bpf-compat/gnu/stubs.h create mode 100644 tools/sched_ext/include/scx/common.bpf.h create mode 100644 tools/sched_ext/include/scx/common.h create mode 100644 tools/sched_ext/include/scx/compat.bpf.h create mode 100644 tools/sched_ext/include/scx/compat.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.h create mode 100644 tools/sched_ext/include/scx/enums.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.h create mode 100644 tools/sched_ext/include/scx/user_exit_info.h create mode 100644 tools/sched_ext/scx_central.bpf.c create mode 100644 tools/sched_ext/scx_central.c create mode 100644 tools/sched_ext/scx_flatcg.bpf.c create mode 100644 tools/sched_ext/scx_flatcg.c create mode 100644 tools/sched_ext/scx_flatcg.h create mode 100644 tools/sched_ext/scx_qmap.bpf.c create mode 100644 tools/sched_ext/scx_qmap.c create mode 100644 tools/sched_ext/scx_show_state.py create mode 100644 tools/sched_ext/scx_simple.bpf.c create mode 100644 tools/sched_ext/scx_simple.c create mode 100644 tools/testing/selftests/bpf/prog_tests/global_func_dead_code.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c rename tools/testing/selftests/bpf/progs/{bpf_iter_task_vma.c => bpf_iter_task_vmas.c} (100%) rename tools/testing/selftests/bpf/progs/{bpf_iter_task.c => bpf_iter_tasks.c} (100%) create mode 100644 tools/testing/selftests/bpf/progs/freplace_dead_global_func.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_failure.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_vma.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null_fail.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_module.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_bits_iter.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_global_subprogs.c create mode 100644 tools/testing/selftests/sched_ext/.gitignore create mode 100644 tools/testing/selftests/sched_ext/Makefile create mode 100644 tools/testing/selftests/sched_ext/config create mode 100644 tools/testing/selftests/sched_ext/create_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/create_dsq.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.bpf.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.c create mode 100644 tools/testing/selftests/sched_ext/exit.bpf.c create mode 100644 tools/testing/selftests/sched_ext/exit.c create mode 100644 tools/testing/selftests/sched_ext/exit_test.h create mode 100644 tools/testing/selftests/sched_ext/hotplug.bpf.c create mode 100644 tools/testing/selftests/sched_ext/hotplug.c create mode 100644 tools/testing/selftests/sched_ext/hotplug_test.h create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.bpf.c create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.c create mode 100644 tools/testing/selftests/sched_ext/maximal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maximal.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_yld.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.bpf.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.c create mode 100644 tools/testing/selftests/sched_ext/reload_loop.c create mode 100644 tools/testing/selftests/sched_ext/runner.c create mode 100644 tools/testing/selftests/sched_ext/scx_test.h create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.c create mode 100644 tools/testing/selftests/sched_ext/test_example.c create mode 100644 tools/testing/selftests/sched_ext/util.c create mode 100644 tools/testing/selftests/sched_ext/util.h -- 2.34.1

1 399

[openeuler:openEuler-1.0-LTS 1943/1943] arch/x86/events/zhaoxin/core.c:505:1: warning: attribute declaration must precede definition
by kernel test robot 16 Dec '25

16 Dec '25

Hi LeoLiu-oc, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 49bc452fdcb1e9ec3f9bb20cd3e15b865a2933fd commit: 0ce7c3b6e8a986ee9ef92a07ae18964835446c07 [1943/1943] x86/perf: Add hardware performance events support for Zhaoxin CPU. config: x86_64-randconfig-005-20251216 (https://download.01.org/0day-ci/archive/20251216/202512161945.q1Ihd2Pk-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 1335a05ab8bc8339ce24be3a9da89d8c3f4e0571) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251216/202512161945.q1Ihd2Pk-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512161945.q1Ihd2Pk-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from <built-in>:2: In file included from include/linux/compiler_types.h:59: include/linux/compiler-clang.h:20:9: warning: '__SANITIZE_ADDRESS__' macro redefined [-Wmacro-redefined] 20 | #define __SANITIZE_ADDRESS__ | ^ <built-in>:354:9: note: previous definition is here 354 | #define __SANITIZE_ADDRESS__ 1 | ^ >> arch/x86/events/zhaoxin/core.c:505:1: warning: attribute declaration must precede definition [-Wignored-attributes] 505 | __init int zhaoxin_pmu_init(void) | ^ include/linux/init.h:50:17: note: expanded from macro '__init' 50 | #define __init __section(.init.text) __cold __latent_entropy __noinitretpoline | ^ include/linux/compiler_types.h:222:38: note: expanded from macro '__section' 222 | #define __section(S) __attribute__((__section__(#S))) | ^ arch/x86/events/zhaoxin/../perf_event.h:1054:19: note: previous definition is here 1054 | static inline int zhaoxin_pmu_init(void) | ^ >> arch/x86/events/zhaoxin/core.c:505:1: warning: attribute declaration must precede definition [-Wignored-attributes] 505 | __init int zhaoxin_pmu_init(void) | ^ include/linux/init.h:50:39: note: expanded from macro '__init' 50 | #define __init __section(.init.text) __cold __latent_entropy __noinitretpoline | ^ include/linux/compiler_types.h:221:33: note: expanded from macro '__cold' 221 | #define __cold __attribute__((cold)) | ^ arch/x86/events/zhaoxin/../perf_event.h:1054:19: note: previous definition is here 1054 | static inline int zhaoxin_pmu_init(void) | ^ arch/x86/events/zhaoxin/core.c:505:12: error: redefinition of 'zhaoxin_pmu_init' 505 | __init int zhaoxin_pmu_init(void) | ^ arch/x86/events/zhaoxin/../perf_event.h:1054:19: note: previous definition is here 1054 | static inline int zhaoxin_pmu_init(void) | ^ 3 warnings and 1 error generated. vim +505 arch/x86/events/zhaoxin/core.c 504 > 505 __init int zhaoxin_pmu_init(void) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH openEuler-26.09 0/4] test
by Zicheng Qu 16 Dec '25

16 Dec '25

Jiri Olsa (2): bpf: Add missed value to kprobe perf link info bpf: Add cookie to perf_event bpf_link_info records Zicheng Qu (2): bpf: Fix kabi for missed in bpf_link_info bpf: Fix kabi for cookie in bpf_link_info include/linux/trace_events.h | 6 ++++-- include/uapi/linux/bpf.h | 15 +++++++++++++++ kernel/bpf/syscall.c | 18 ++++++++++++------ kernel/trace/bpf_trace.c | 5 +++-- kernel/trace/trace_kprobe.c | 14 +++++++++++--- tools/include/uapi/linux/bpf.h | 7 +++++++ 6 files changed, 52 insertions(+), 13 deletions(-) -- 2.34.1

1 4

[PATCH openEuler-1.0-LTS] ip6_vti: fix slab-use-after-free in decode_session6
by Wang Liang 16 Dec '25

16 Dec '25

From: Zhengchao Shao <shaozhengchao(a)huawei.com> stable inclusion from stable-v4.19.293 commit fa6c6c04f6c9b21b315023f487e5a07ae7fcf647 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDBOS5 CVE: CVE-2023-53821 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 9fd41f1ba638938c9a1195d09bc6fa3be2712f25 ] When ipv6_vti device is set to the qdisc of the sfb type, the cb field of the sent skb may be modified during enqueuing. Then, slab-use-after-free may occur when ipv6_vti device sends IPv6 packets. The stack information is as follows: BUG: KASAN: slab-use-after-free in decode_session6+0x103f/0x1890 Read of size 1 at addr ffff88802e08edc2 by task swapper/0/0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.4.0-next-20230707-00001-g84e2cad7f979 #410 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 04/01/2014 Call Trace: <IRQ> dump_stack_lvl+0xd9/0x150 print_address_description.constprop.0+0x2c/0x3c0 kasan_report+0x11d/0x130 decode_session6+0x103f/0x1890 __xfrm_decode_session+0x54/0xb0 vti6_tnl_xmit+0x3e6/0x1ee0 dev_hard_start_xmit+0x187/0x700 sch_direct_xmit+0x1a3/0xc30 __qdisc_run+0x510/0x17a0 __dev_queue_xmit+0x2215/0x3b10 neigh_connected_output+0x3c2/0x550 ip6_finish_output2+0x55a/0x1550 ip6_finish_output+0x6b9/0x1270 ip6_output+0x1f1/0x540 ndisc_send_skb+0xa63/0x1890 ndisc_send_rs+0x132/0x6f0 addrconf_rs_timer+0x3f1/0x870 call_timer_fn+0x1a0/0x580 expire_timers+0x29b/0x4b0 run_timer_softirq+0x326/0x910 __do_softirq+0x1d4/0x905 irq_exit_rcu+0xb7/0x120 sysvec_apic_timer_interrupt+0x97/0xc0 </IRQ> Allocated by task 9176: kasan_save_stack+0x22/0x40 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x7f/0x90 kmem_cache_alloc_node+0x1cd/0x410 kmalloc_reserve+0x165/0x270 __alloc_skb+0x129/0x330 netlink_sendmsg+0x9b1/0xe30 sock_sendmsg+0xde/0x190 ____sys_sendmsg+0x739/0x920 ___sys_sendmsg+0x110/0x1b0 __sys_sendmsg+0xf7/0x1c0 do_syscall_64+0x39/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 9176: kasan_save_stack+0x22/0x40 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2b/0x40 ____kasan_slab_free+0x160/0x1c0 slab_free_freelist_hook+0x11b/0x220 kmem_cache_free+0xf0/0x490 skb_free_head+0x17f/0x1b0 skb_release_data+0x59c/0x850 consume_skb+0xd2/0x170 netlink_unicast+0x54f/0x7f0 netlink_sendmsg+0x926/0xe30 sock_sendmsg+0xde/0x190 ____sys_sendmsg+0x739/0x920 ___sys_sendmsg+0x110/0x1b0 __sys_sendmsg+0xf7/0x1c0 do_syscall_64+0x39/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88802e08ed00 which belongs to the cache skbuff_small_head of size 640 The buggy address is located 194 bytes inside of freed 640-byte region [ffff88802e08ed00, ffff88802e08ef80) As commit f855691975bb ("xfrm6: Fix the nexthdr offset in _decode_session6.") showed, xfrm_decode_session was originally intended only for the receive path. IP6CB(skb)->nhoff is not set during transmission. Therefore, set the cb field in the skb to 0 before sending packets. Fixes: f855691975bb ("xfrm6: Fix the nexthdr offset in _decode_session6.") Signed-off-by: Zhengchao Shao <shaozhengchao(a)huawei.com> Signed-off-by: Steffen Klassert <steffen.klassert(a)secunet.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Wang Liang <wangliang74(a)huawei.com> --- net/ipv6/ip6_vti.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c index 866ce815625e..a64050e77588 100644 --- a/net/ipv6/ip6_vti.c +++ b/net/ipv6/ip6_vti.c @@ -562,12 +562,12 @@ vti6_tnl_xmit(struct sk_buff *skb, struct net_device *dev) vti6_addr_conflict(t, ipv6_hdr(skb))) goto tx_err; - xfrm_decode_session(skb, &fl, AF_INET6); memset(IP6CB(skb), 0, sizeof(*IP6CB(skb))); + xfrm_decode_session(skb, &fl, AF_INET6); break; case htons(ETH_P_IP): - xfrm_decode_session(skb, &fl, AF_INET); memset(IPCB(skb), 0, sizeof(*IPCB(skb))); + xfrm_decode_session(skb, &fl, AF_INET); break; default: goto tx_err; -- 2.34.1

2 1

[openeuler:openEuler-1.0-LTS 1941/1941] sound/soc/codecs/simple-amplifier.o: warning: objtool: missing symbol for section .init.text
by kernel test robot 16 Dec '25

16 Dec '25

Hi Mark, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 05226913813ed71f46a7f726a6c73813d8d0b0d7 commit: 4aa5db22d35588e1a5d2ee88472348ea73d9fb23 [1941/1941] Merge branch 'asoc-4.19' into asoc-next config: x86_64-buildonly-randconfig-006-20251212 (https://download.01.org/0day-ci/archive/20251216/202512161723.lgbkIZyg-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 1335a05ab8bc8339ce24be3a9da89d8c3f4e0571) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251216/202512161723.lgbkIZyg-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512161723.lgbkIZyg-lkp@intel.com/ All warnings (new ones prefixed by >>): >> sound/soc/codecs/simple-amplifier.o: warning: objtool: missing symbol for section .init.text -- sound/soc/codecs/es7241.c:206:33: warning: unused variable 'es7241_chip' [-Wunused-const-variable] 206 | static const struct es7241_chip es7241_chip = { | ^~~~~~~~~~~ 1 warning generated. >> sound/soc/codecs/es7241.o: warning: objtool: missing symbol for section .init.text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH openEuler-26.09 000/399] sched_ext patch
by Zicheng Qu 16 Dec '25

16 Dec '25

Aboorva Devarajan (2): sched_ext: Documentation: Remove mentions of scx_bpf_switch_all sched: Pass correct scheduling policy to __setscheduler_class Alexander Lobakin (1): bitops: make BYTES_TO_BITS() treewide-available Alexei Starovoitov (1): selftests/bpf: modify test_loader that didn't support running bpf_prog_type_syscall programs Andrea Righi (32): sched_ext: fix typo in set_weight() description sched_ext: add CONFIG_DEBUG_INFO_BTF dependency sched_ext: Provide a sysfs enable_seq counter sched_ext: improve WAKE_SYNC behavior for default idle CPU selection sched_ext: Clarify ops.select_cpu() for single-CPU tasks sched_ext: Introduce LLC awareness to the default idle selection policy sched_ext: Introduce NUMA awareness to the default idle selection policy sched_ext: Do not enable LLC/NUMA optimizations when domains overlap sched_ext: Fix incorrect use of bitwise AND MAINTAINERS: add self as reviewer for sched_ext sched_ext: idle: Refresh idle masks during idle-to-idle transitions sched_ext: Use the NUMA scheduling domain for NUMA optimizations sched_ext: idle: use assign_cpu() to update the idle cpumask sched_ext: idle: clarify comments sched_ext: idle: introduce check_builtin_idle_enabled() helper sched_ext: idle: small CPU iteration refactoring sched_ext: update scx_bpf_dsq_insert() doc for SCX_DSQ_LOCAL_ON sched_ext: Include remaining task time slice in error state dump sched_ext: Include task weight in the error state dump selftests/sched_ext: Fix enum resolution tools/sched_ext: Add helper to check task migration state sched_ext: selftests/dsp_local_on: Fix selftest on UP systems sched_ext: Fix lock imbalance in dispatch_to_local_dsq() selftests/sched_ext: Fix exit selftest hang on UP sched_ext: Move built-in idle CPU selection policy to a separate file sched_ext: Track currently locked rq sched_ext: Make scx_locked_rq() inline sched_ext: Fix missing rq lock in scx_bpf_cpuperf_set() sched/ext: Fix invalid task state transitions on class switch sched_ext: Make scx_kf_allowed_if_unlocked() available outside ext.c sched_ext: Remove duplicate BTF_ID_FLAGS definitions sched_ext: Fix rq lock state in hotplug ops Andrii Nakryiko (7): bpf: extract iterator argument type and name validation logic bpf: allow passing struct bpf_iter_<type> as kfunc arguments selftests/bpf: test passing iterator to a kfunc bpf: Emit global subprog name in verifier logs bpf: Validate global subprogs lazily selftests/bpf: Add lazy global subprog validation tests selftests/bpf: validate eliminated global subprog is not freplaceable Arnaldo Carvalho de Melo (1): tools include UAPI: Sync linux/sched.h copy with the kernel sources Atul Kumar Pant (1): sched_ext: Fixes typos in comments Benjamin Tissoires (1): bpf: introduce in_sleepable() helper Bitao Hu (4): genirq: Convert kstat_irqs to a struct genirq: Provide a snapshot mechanism for interrupt statistics watchdog/softlockup: Low-overhead detection of interrupt storm watchdog/softlockup: Report the most frequent interrupts Björn Töpel (1): selftests: sched_ext: Add sched_ext as proper selftest target Breno Leitao (3): rhashtable: Fix potential deadlock by moving schedule_work outside lock sched_ext: Use kvzalloc for large exit_dump allocation sched/ext: Prevent update_locked_rq() calls with NULL rq Changwoo Min (11): sched_ext: Clarify sched_ext_ops table for userland scheduler sched_ext: add a missing rcu_read_lock/unlock pair at scx_select_cpu_dfl() MAINTAINERS: add me as reviewer for sched_ext sched_ext: Replace rq_lock() to raw_spin_rq_lock() in scx_ops_bypass() sched_ext: Relocate scx_enabled() related code sched_ext: Implement scx_bpf_now() sched_ext: Add scx_bpf_now() for BPF scheduler sched_ext: Add time helpers for BPF schedulers sched_ext: Replace bpf_ktime_get_ns() to scx_bpf_now() sched_ext: Use time helpers in BPF schedulers sched_ext: Fix incorrect time delta calculation in time_delta() Christian Brauner (1): file: add take_fd() cleanup helper Christian Loehle (1): sched/fair: Remove stale FREQUENCY_UTIL comment Chuyi Zhou (15): cgroup: Prepare for using css_task_iter_*() in BPF bpf: Introduce css_task open-coded iterator kfuncs bpf: Introduce task open coded iterator kfuncs bpf: Introduce css open-coded iterator kfuncs bpf: teach the verifier to enforce css_iter and task_iter in RCU CS bpf: Let bpf_iter_task_new accept null task ptr selftests/bpf: rename bpf_iter_task.c to bpf_iter_tasks.c selftests/bpf: Add tests for open-coded task and css iter bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg bpf: Relax allowlist for css_task iter selftests/bpf: Add tests for css_task iter combining with cgroup iter selftests/bpf: Add test for using css_task iter in sleepable progs selftests/bpf: get trusted cgrp from bpf_iter__cgroup directly sched_ext: Fix the incorrect bpf_list kfunc API in common.bpf.h. sched_ext: Use SCX_CALL_OP_TASK in task_tick_scx Colin Ian King (1): sched_ext: Fix spelling mistake: "intead" -> "instead" Daniel Xu (3): bpf: btf: Support flags for BTF_SET8 sets bpf: btf: Add BTF_KFUNCS_START/END macro pair bpf: treewide: Annotate BPF kfuncs in BTF Dave Marchevsky (5): bpf: Don't explicitly emit BTF for struct btf_iter_num selftests/bpf: Rename bpf_iter_task_vma.c to bpf_iter_task_vmas.c bpf: Introduce task_vma open-coded iterator kfuncs selftests/bpf: Add tests for open-coded task_vma iter bpf: Add __bpf_kfunc_{start,end}_defs macros David Vernet (15): bpf: Add ability to pin bpf timer to calling CPU selftests/bpf: Test pinning bpf timer to a core sched_ext: Implement runnable task stall watchdog sched_ext: Print sched_ext info when dumping stack sched_ext: Implement SCX_KICK_WAIT sched_ext: Implement sched_ext_ops.cpu_acquire/release() sched_ext: Add selftests bpf: Load vmlinux btf for any struct_ops map sched_ext: Make scx_bpf_cpuperf_set() @cpu arg signed scx: Allow calling sleepable kfuncs from BPF_PROG_TYPE_SYSCALL scx/selftests: Verify we can call create_dsq from prog_run sched_ext: Remove unnecessary cpu_relax() scx: Fix exit selftest to use custom DSQ scx: Fix raciness in scx_ops_bypass() scx: Fix maximal BPF selftest prog Dawei Li (1): genirq: Deduplicate interrupt descriptor initialization Devaansh Kumar (1): sched_ext: selftests: Fix grammar in tests description Devaansh-Kumar (1): sched_ext: Documentation: Update instructions for running example schedulers Geliang Tang (1): bpf, btf: Check btf for register_bpf_struct_ops Henry Huang (2): sched_ext: initialize kit->cursor.flags sched_ext: keep running prev when prev->scx.slice != 0 Herbert Xu (1): rhashtable: Fix rhashtable_try_insert test Honglei Wang (3): sched_ext: use correct function name in pick_task_scx() warning message sched_ext: Add __weak to fix the build errors sched_ext: switch class when preempted by higher priority scheduler Hongyan Xia (1): sched/ext: Add BPF function to fetch rq Hou Tao (7): bpf: Free dynamically allocated bits in bpf_iter_bits_destroy() bpf: Add bpf_mem_alloc_check_size() helper bpf: Check the validity of nr_words in bpf_iter_bits_new() bpf: Use __u64 to save the bits in bits iterator selftests/bpf: Add three test cases for bits_iter selftests/bpf: Use -4095 as the bad address for bits iterator selftests/bpf: Export map_update_retriable() Ihor Solodrai (2): selftests/sched_ext: add order-only dependency of runner.o on BPFOBJ selftests/sched_ext: fix build after renames in sched_ext API Ilpo Järvinen (1): <linux/cleanup.h>: Allow the passing of both iomem and non-iomem pointers to no_free_ptr() Ingo Molnar (3): sched/syscalls: Split out kernel/sched/syscalls.c from kernel/sched/core.c sched/fair: Rename check_preempt_wakeup() to check_preempt_wakeup_fair() sched/fair: Rename check_preempt_curr() to wakeup_preempt() Jake Hillion (1): sched_ext: create_dsq: Return -EEXIST on duplicate request Jiapeng Chong (1): sched_ext: Fixes incorrect type in bpf_scx_init() Jiayuan Chen (1): selftests/bpf: Fixes for test_maps test Jiri Olsa (2): bpf: Add missed value to kprobe perf link info bpf: Add cookie to perf_event bpf_link_info records Kui-Feng Lee (28): bpf: refactory struct_ops type initialization to a function. bpf: get type information with BTF_ID_LIST bpf, net: introduce bpf_struct_ops_desc. bpf: add struct_ops_tab to btf. bpf: make struct_ops_map support btfs other than btf_vmlinux. bpf: pass btf object id in bpf_map_info. bpf: lookup struct_ops types from a given module BTF. bpf: pass attached BTF to the bpf_struct_ops subsystem bpf: hold module refcnt in bpf_struct_ops map creation and prog verification. bpf: validate value_type bpf, net: switch to dynamic registration libbpf: Find correct module BTFs for struct_ops maps and progs. bpf: export btf_ctx_access to modules. selftests/bpf: test case for register_bpf_struct_ops(). bpf: Fix error checks against bpf_get_btf_vmlinux(). bpf: Move __kfunc_param_match_suffix() to btf.c. bpf: Remove an unnecessary check. bpf: add btf pointer to struct bpf_ctx_arg_aux. bpf: Create argument information for nullable arguments. selftests/bpf: Suppress warning message of an unused variable. selftests/bpf: Test PTR_MAYBE_NULL arguments of struct_ops operators. libbpf: Set btf_value_type_id of struct bpf_map for struct_ops. libbpf: Convert st_ops->data to shadow type. bpftool: Generated shadow variables for struct_ops maps. bpftool: Add an example for struct_ops map and shadow type. selftests/bpf: Test if shadow types work correctly. bpf, net: validate struct_ops when updating value. bpf: struct_ops supports more than one page for trampolines. Kumar Kartikeya Dwivedi (4): bpf: Allow calling static subprogs while holding a bpf_spin_lock selftests/bpf: Add test for static subprog call in lock cs bpf: Transfer RCU lock state between subprog calls selftests/bpf: Add tests for RCU lock transfer between subprogs Liang Jie (1): sched_ext: Use sizeof_field for key_len in dsq_hash_params Manu Bretelle (1): sched_ext: define missing cfi stubs for sched_ext Martin KaFai Lau (3): libbpf: Ensure undefined bpf_attr field stays 0 bpf: Reject struct_ops registration that uses module ptr and the module btf_id is missing bpf: Use kallsyms to find the function name of a struct_ops's stub function Matthieu Baerts (1): bpf: fix compilation error without CGROUPS Peter Zijlstra (20): cleanup: Make no_free_ptr() __must_check sched: Simplify set_user_nice() sched: Simplify syscalls sched: Simplify sched_{set,get}affinity() sched: Simplify yield_to() sched: Simplify sched_rr_get_interval() sched: Simplify sched_move_task() sched: Misc cleanups sched/deadline: Move bandwidth accounting into {en,de}queue_dl_entity sched: Allow sched_class::dequeue_task() to fail sched: Unify runtime accounting across classes sched: Use set_next_task(.first) where required sched/fair: Cleanup pick_task_fair() vs throttle sched/fair: Cleanup pick_task_fair()'s curr sched/fair: Unify pick_{,next_}_task_fair() sched: Fixup set_next_task() implementations sched: Split up put_prev_task_balance() sched: Rework pick_next_task() sched: Combine the last put_prev_task() and the first set_next_task() sched: Add put_prev_task(.next) Pu Lehui (1): riscv, bpf: Fix out-of-bounds issue when preparing trampoline image Randy Dunlap (1): sched_ext: fix kernel-doc warnings Shizhao Chen (1): sched_ext: Add option -l in selftest runner to list all available tests Song Liu (8): bpf: Charge modmem for struct_ops trampoline bpf: Let bpf_prog_pack_free handle any pointer bpf: Adjust argument names of arch_prepare_bpf_trampoline() bpf: Add helpers for trampoline image management bpf, x86: Adjust arch_prepare_bpf_trampoline return value bpf: Add arch_bpf_trampoline_size() bpf: Use arch_bpf_trampoline_size x86, bpf: Use bpf_prog_pack for bpf trampoline T.J. Mercier (1): bpf, docs: Fix broken link to renamed bpf_iter_task_vmas.c Tejun Heo (148): sched: Restructure sched_class order sanity checks in sched_init() sched: Allow sched_cgroup_fork() to fail and introduce sched_cancel_fork() sched: Add sched_class->reweight_task() sched: Add sched_class->switching_to() and expose check_class_changing/changed() sched: Factor out cgroup weight conversion functions sched: Factor out update_other_load_avgs() from __update_blocked_others() sched: Add normal_policy() sched_ext: Add boilerplate for extensible scheduler class sched_ext: Implement BPF extensible scheduler class sched_ext: Add scx_simple and scx_example_qmap example schedulers sched_ext: Add sysrq-S which disables the BPF scheduler sched_ext: Allow BPF schedulers to disallow specific tasks from joining SCHED_EXT sched_ext: Print debug dump after an error exit tools/sched_ext: Add scx_show_state.py sched_ext: Implement scx_bpf_kick_cpu() and task preemption support sched_ext: Add a central scheduler which makes all scheduling decisions on one CPU sched_ext: Make watchdog handle ops.dispatch() looping stall sched_ext: Add task state tracking operations sched_ext: Implement tickless support sched_ext: Track tasks that are subjects of the in-flight SCX operation sched_ext: Implement sched_ext_ops.cpu_online/offline() sched_ext: Bypass BPF scheduler while PM events are in progress sched_ext: Implement core-sched support sched_ext: Add vtime-ordered priority queue to dispatch_q's sched_ext: Documentation: scheduler: Document extensible scheduler class sched, sched_ext: Replace scx_next_task_picked() with sched_class->switch_class() cpufreq_schedutil: Refactor sugov_cpu_is_busy() sched_ext: Add cpuperf support sched_ext: Drop tools_clean target from the top-level Makefile sched_ext: Swap argument positions in kcalloc() call to avoid compiler warning sched, sched_ext: Simplify dl_prio() case handling in sched_fork() sched_ext: Account for idle policy when setting p->scx.weight in scx_ops_enable_task() sched_ext: Disallow loading BPF scheduler if isolcpus= domain isolation is in effect sched_ext: Minor cleanups in kernel/sched/ext.h sched, sched_ext: Open code for_balance_class_range() sched, sched_ext: Move some declarations from kernel/sched/ext.h to sched.h sched_ext: Take out ->priq and ->flags from scx_dsq_node sched_ext: Implement DSQ iterator sched_ext/scx_qmap: Add an example usage of DSQ iterator sched_ext: Reimplement scx_bpf_reenqueue_local() sched_ext: Make scx_bpf_reenqueue_local() skip tasks that are being migrated sched: Move struct balance_callback definition upward sched_ext: Unpin and repin rq lock from balance_scx() sched_ext: s/SCX_RQ_BALANCING/SCX_RQ_IN_BALANCE/ and add SCX_RQ_IN_WAKEUP sched_ext: Allow SCX_DSQ_LOCAL_ON for direct dispatches sched_ext/scx_qmap: Pick idle CPU for direct dispatch on !wakeup enqueues sched_ext: Build fix on !CONFIG_STACKTRACE[_SUPPORT] sched_ext: Allow p->scx.disallow only while loading sched_ext: Simplify scx_can_stop_tick() invocation in sched_can_stop_tick() sched_ext: Add scx_enabled() test to @start_class promotion in put_prev_task_balance() sched_ext: Use update_curr_common() in update_curr_scx() sched_ext: Simplify UP support by enabling sched_class->balance() in UP sched_ext: Improve comment on idle_sched_class exception in scx_task_iter_next_locked() sched_ext: Make task_can_run_on_remote_rq() use common task_allowed_on_cpu() sched_ext: Fix unsafe list iteration in process_ddsp_deferred_locals() sched_ext: Make scx_rq_online() also test cpu_active() in addition to SCX_RQ_ONLINE sched_ext: Improve logging around enable/disable sched_ext: Don't use double locking to migrate tasks across CPUs scx_central: Fix smatch checker warning sched_ext: Add missing cfi stub for ops.tick sched_ext: Use task_can_run_on_remote_rq() test in dispatch_to_local_dsq() sched_ext: Use sched_clock_cpu() instead of rq_clock_task() in touch_core_sched() sched_ext: Don't call put_prev_task_scx() before picking the next task sched_ext: Replace SCX_TASK_BAL_KEEP with SCX_RQ_BAL_KEEP sched_ext: Unify regular and core-sched pick task paths sched_ext: Relocate functions in kernel/sched/ext.c sched_ext: Remove switch_class_scx() sched_ext: Remove sched_class->switch_class() sched_ext: TASK_DEAD tasks must be switched out of SCX on ops_disable sched_ext: TASK_DEAD tasks must be switched into SCX on ops_enable sched: Expose css_tg() sched: Make cpu_shares_read_u64() use tg_weight() sched: Introduce CONFIG_GROUP_SCHED_WEIGHT sched_ext: Add cgroup support sched_ext: Add a cgroup scheduler which uses flattened hierarchy sched_ext: Temporarily work around pick_task_scx() being called without balance_scx() sched_ext: Add missing static to scx_has_op[] sched_ext: Add missing static to scx_dump_data sched_ext: Rename scx_kfunc_set_sleepable to unlocked and relocate sched_ext: Refactor consume_remote_task() sched_ext: Make find_dsq_for_dispatch() handle SCX_DSQ_LOCAL_ON sched_ext: Fix processs_ddsp_deferred_locals() by unifying DTL_INVALID handling sched_ext: Restructure dispatch_to_local_dsq() sched_ext: Reorder args for consume_local/remote_task() sched_ext: Move sanity check and dsq_mod_nr() into task_unlink_from_dsq() sched_ext: Move consume_local_task() upward sched_ext: Replace consume_local_task() with move_local_task_to_local_dsq() sched_ext: Compact struct bpf_iter_scx_dsq_kern sched_ext: Implement scx_bpf_dispatch[_vtime]_from_dsq() scx_qmap: Implement highpri boosting sched_ext: Synchronize bypass state changes with rq lock sched_ext: Don't trigger ops.quiescent/runnable() on migrations sched_ext: Fix build when !CONFIG_STACKTRACE sched_ext: Build fix for !CONFIG_SMP sched_ext: Add __COMPAT helpers for features added during v6.12 devel cycle tools/sched_ext: Receive misc updates from SCX repo scx_flatcg: Use a user DSQ for fallback instead of SCX_DSQ_GLOBAL sched_ext: Allow only user DSQs for scx_bpf_consume(), scx_bpf_dsq_nr_queued() and bpf_iter_scx_dsq_new() sched_ext: Relocate find_user_dsq() sched_ext: Split the global DSQ per NUMA node sched_ext: Use shorter slice while bypassing sched_ext: Relocate check_hotplug_seq() call in scx_ops_enable() sched_ext: Remove SCX_OPS_PREPPING sched_ext: Initialize in bypass mode sched_ext: Fix SCX_TASK_INIT -> SCX_TASK_READY transitions in scx_ops_enable() sched_ext: Enable scx_ops_init_task() separately sched_ext: Add scx_cgroup_enabled to gate cgroup operations and fix scx_tg_online() sched_ext: Decouple locks in scx_ops_disable_workfn() sched_ext: Decouple locks in scx_ops_enable() sched_ext: Improve error reporting during loading sched_ext: scx_cgroup_exit() may be called without successful scx_cgroup_init() sched/core: Make select_task_rq() take the pointer to wake_flags instead of value sched/core: Add ENQUEUE_RQ_SELECTED to indicate whether ->select_task_rq() was called sched_ext, scx_qmap: Add and use SCX_ENQ_CPU_SELECTED Revert "sched_ext: Use shorter slice while bypassing" sched_ext: Start schedulers with consistent p->scx.slice values sched_ext: Move scx_buildin_idle_enabled check to scx_bpf_select_cpu_dfl() sched_ext: bypass mode shouldn't depend on ops.select_cpu() sched_ext: Move scx_tasks_lock handling into scx_task_iter helpers sched_ext: Don't hold scx_tasks_lock for too long sched_ext: Make cast_mask() inline sched_ext: Fix enq_last_no_enq_fails selftest sched_ext: Add a missing newline at the end of an error message sched_ext: Update scx_show_state.py to match scx_ops_bypass_depth's new type sched_ext: Handle cases where pick_task_scx() is called without preceding balance_scx() sched_ext: ops.cpu_acquire() should be called with SCX_KF_REST sched_ext: Factor out move_task_between_dsqs() from scx_dispatch_from_dsq() sched_ext: Rename CFI stubs to names that are recognized by BPF sched_ext: Replace set_arg_maybe_null() with __nullable CFI stub tags sched_ext: Avoid live-locking bypass mode switching sched_ext: Enable the ops breather and eject BPF scheduler on softlockup sched_ext: scx_bpf_dispatch_from_dsq_set_*() are allowed from unlocked context sched_ext: Rename scx_bpf_dispatch[_vtime]() to scx_bpf_dsq_insert[_vtime]() sched_ext: Rename scx_bpf_consume() to scx_bpf_dsq_move_to_local() sched_ext: Rename scx_bpf_dispatch[_vtime]_from_dsq*() -> scx_bpf_dsq_move[_vtime]*() sched_ext: Fix invalid irq restore in scx_ops_bypass() sched_ext: Fix dsq_local_on selftest tools/sched_ext: Receive updates from SCX repo sched_ext: selftests/dsp_local_on: Fix sporadic failures sched_ext: Fix incorrect autogroup migration detection sched_ext: Implement auto local dispatching of migration disabled tasks sched_ext: Fix migration disabled handling in targeted dispatches sched_ext: Fix incorrect assumption about migration disabled tasks in task_can_run_on_remote_rq() sched_ext: Fix pick_task_scx() picking non-queued tasks when it's called without balance() sched_ext: Implement SCX_OPS_ALLOW_QUEUED_WAKEUP sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator sched_ext: Make scx_group_set_weight() always update tg->scx.weight sched_ext, sched/core: Don't call scx_group_set_weight() prematurely from sched_create_group() Thomas Gleixner (1): sched/ext: Remove sched_fork() hack Thorsten Blum (1): sched_ext: Use str_enabled_disabled() helper in update_selcpu_topology() Tianchen Ding (1): sched_ext: Use btf_ids to resolve task_struct Vincent Guittot (3): sched/cpufreq: Rework schedutil governor performance estimation sched/fair: Fix frequency selection for non-invariant case sched/fair: Fix sched_can_stop_tick() for fair tasks Vishal Chourasia (2): sched_ext: Add __weak markers to BPF helper function decalarations sched_ext: Fix function pointer type mismatches in BPF selftests Wenyu Huang (1): sched/doc: Update documentation after renames and synchronize Chinese version Yafang Shao (2): bpf: Add bits iterator selftests/bpf: Add selftest for bits iter Yipeng Zou (1): sched_ext: Allow dequeue_task_scx to fail Yiwei Lin (1): sched/fair: Remove unused 'curr' argument from pick_next_entity() Yu Liao (2): sched: Put task_group::idle under CONFIG_GROUP_SCHED_WEIGHT sched: Add dummy version of sched_group_set_idle() Yury Norov (1): cpumask: introduce assign_cpu() macro Zhang Qiao (3): sched_ext: Remove redundant p->nr_cpus_allowed checker sched/ext: Fix unmatch trailing comment of CONFIG_EXT_GROUP_SCHED sched/ext: Use tg_cgroup() to elieminate duplicate code Zhao Mengmeng (1): sched_ext: Replace scx_next_task_picked() with switch_class() in comment Zicheng Qu (25): bpf: Fix kabi for missed in bpf_link_info bpf: Fix kabi for cookie in bpf_link_info bpf: Fix kabi for value_type_btf_obj_fd in union bpf_attr bpf: Fix kabi for struct bpf_verifier_env selftest/bpf: Fix task_vma iter verification error bpf: Fix kabi for btf in struct bpf_ctx_arg_aux bpf: Fix kabi for called and verified in struct bpf_func_info_aux sched: Fix kabi for reweight_task in struct sched_class sched/syscalls: Fix kabi for EXPORT_SYMBOL moved from core.c to syscalls.c sched: Fix kabi for switching_to in struct sched_class sched/fair: Fix kabi for check_preempt_curr and wakeup_preempt in struct sched_class sched: Fix kabi for dequeue_task in struct sched_class sched_ext: Fix kabi for scx in struct task_struct sched_ext: Fix kabi for switch_class in struct sched_class sched: Fix kabi for exec_max in struct sched_statistics sched_ext: Fix kabi for balance in struct sched_class sched_ext: Fix kabi for header in kernel/sched/sched.h sched: Fix kabi pick_task in struct sched_class sched: Fix kabi for put_prev_task in struct sched_class sched_ext: Fix kabi for scx_flags and scx_weight in struct task_group sched: Fix kabi for int idle in struct task_group sched: Add __setscheduler_class() for sched_ext genirq: Fix kabi for kstat_irqs in struct irq_desc bpf: Fix kabi for size in struct bpf_tramp_image sched_ext: Enable sched_ext configs on arm64 guanjing (1): sched_ext: fix application of sizeof to pointer Documentation/bpf/bpf_iterators.rst | 2 +- Documentation/bpf/kfuncs.rst | 14 +- Documentation/scheduler/index.rst | 1 + Documentation/scheduler/sched-design-CFS.rst | 8 +- Documentation/scheduler/sched-ext.rst | 325 + .../zh_CN/scheduler/sched-design-CFS.rst | 8 +- MAINTAINERS | 14 + arch/arm64/configs/openeuler_defconfig | 2 + arch/arm64/net/bpf_jit_comp.c | 55 +- arch/mips/dec/setup.c | 2 +- arch/parisc/kernel/smp.c | 2 +- arch/powerpc/kvm/book3s_hv_rm_xics.c | 2 +- arch/riscv/net/bpf_jit_comp64.c | 43 +- arch/s390/net/bpf_jit_comp.c | 56 +- arch/x86/net/bpf_jit_comp.c | 130 +- drivers/hid/bpf/hid_bpf_dispatch.c | 8 +- drivers/tty/sysrq.c | 1 + include/asm-generic/vmlinux.lds.h | 1 + include/linux/bitops.h | 2 + include/linux/bpf.h | 101 +- include/linux/bpf_mem_alloc.h | 3 + include/linux/bpf_verifier.h | 22 +- include/linux/btf.h | 39 + include/linux/btf_ids.h | 21 +- include/linux/cgroup.h | 14 +- include/linux/cleanup.h | 42 +- include/linux/cpumask.h | 41 +- include/linux/energy_model.h | 1 - include/linux/file.h | 20 + include/linux/filter.h | 2 +- include/linux/irqdesc.h | 17 +- include/linux/kernel_stat.h | 8 + include/linux/sched.h | 8 +- include/linux/sched/ext.h | 216 + include/linux/sched/task.h | 8 +- include/linux/trace_events.h | 6 +- include/trace/events/sched_ext.h | 32 + include/uapi/linux/bpf.h | 32 +- include/uapi/linux/sched.h | 1 + init/Kconfig | 10 + init/init_task.c | 12 + kernel/Kconfig.preempt | 27 +- kernel/bpf/bpf_iter.c | 8 +- kernel/bpf/bpf_struct_ops.c | 730 +- kernel/bpf/bpf_struct_ops_types.h | 12 - kernel/bpf/btf.c | 254 +- kernel/bpf/cgroup_iter.c | 65 +- kernel/bpf/core.c | 21 +- kernel/bpf/cpumask.c | 10 +- kernel/bpf/dispatcher.c | 7 +- kernel/bpf/helpers.c | 186 +- kernel/bpf/map_iter.c | 10 +- kernel/bpf/memalloc.c | 14 +- kernel/bpf/syscall.c | 22 +- kernel/bpf/task_iter.c | 242 +- kernel/bpf/trampoline.c | 101 +- kernel/bpf/verifier.c | 309 +- kernel/cgroup/cgroup.c | 18 +- kernel/cgroup/rstat.c | 4 +- kernel/fork.c | 17 +- kernel/irq/Kconfig | 4 + kernel/irq/internals.h | 2 +- kernel/irq/irqdesc.c | 144 +- kernel/irq/proc.c | 5 +- kernel/sched/autogroup.c | 4 +- kernel/sched/build_policy.c | 13 + kernel/sched/core.c | 2492 +----- kernel/sched/cpufreq_schedutil.c | 89 +- kernel/sched/deadline.c | 175 +- kernel/sched/debug.c | 3 + kernel/sched/ext.c | 7242 +++++++++++++++++ kernel/sched/ext.h | 119 + kernel/sched/ext_idle.c | 752 ++ kernel/sched/ext_idle.h | 39 + kernel/sched/fair.c | 306 +- kernel/sched/idle.c | 31 +- kernel/sched/rt.c | 40 +- kernel/sched/sched.h | 473 +- kernel/sched/stop_task.c | 35 +- kernel/sched/syscalls.c | 1713 ++++ kernel/trace/bpf_trace.c | 15 +- kernel/trace/trace_kprobe.c | 14 +- kernel/trace/trace_probe.c | 2 - kernel/watchdog.c | 223 +- lib/Kconfig.debug | 14 + lib/dump_stack.c | 1 + lib/rhashtable.c | 12 +- net/bpf/bpf_dummy_struct_ops.c | 60 +- net/bpf/test_run.c | 15 +- net/core/filter.c | 29 +- net/core/xdp.c | 10 +- net/ipv4/bpf_tcp_ca.c | 93 +- net/ipv4/fou_bpf.c | 10 +- net/ipv4/tcp_bbr.c | 4 +- net/ipv4/tcp_cong.c | 6 +- net/ipv4/tcp_cubic.c | 4 +- net/ipv4/tcp_dctcp.c | 4 +- net/netfilter/nf_conntrack_bpf.c | 10 +- net/netfilter/nf_nat_bpf.c | 10 +- net/xfrm/xfrm_interface_bpf.c | 10 +- scripts/gdb/linux/interrupts.py | 6 +- tools/Makefile | 10 +- .../bpf/bpftool/Documentation/bpftool-gen.rst | 58 +- tools/bpf/bpftool/gen.c | 237 +- tools/include/linux/bitops.h | 2 + tools/include/uapi/linux/bpf.h | 21 +- tools/include/uapi/linux/sched.h | 1 + tools/lib/bpf/bpf.c | 4 +- tools/lib/bpf/bpf.h | 4 +- tools/lib/bpf/libbpf.c | 97 +- tools/lib/bpf/libbpf_probes.c | 1 + tools/perf/util/probe-finder.c | 4 +- tools/sched_ext/.gitignore | 2 + tools/sched_ext/Makefile | 246 + tools/sched_ext/README.md | 270 + .../sched_ext/include/bpf-compat/gnu/stubs.h | 11 + tools/sched_ext/include/scx/common.bpf.h | 620 ++ tools/sched_ext/include/scx/common.h | 81 + tools/sched_ext/include/scx/compat.bpf.h | 143 + tools/sched_ext/include/scx/compat.h | 187 + .../sched_ext/include/scx/enums.autogen.bpf.h | 105 + tools/sched_ext/include/scx/enums.autogen.h | 41 + tools/sched_ext/include/scx/enums.bpf.h | 12 + tools/sched_ext/include/scx/enums.h | 27 + tools/sched_ext/include/scx/user_exit_info.h | 118 + tools/sched_ext/scx_central.bpf.c | 356 + tools/sched_ext/scx_central.c | 136 + tools/sched_ext/scx_flatcg.bpf.c | 954 +++ tools/sched_ext/scx_flatcg.c | 234 + tools/sched_ext/scx_flatcg.h | 51 + tools/sched_ext/scx_qmap.bpf.c | 827 ++ tools/sched_ext/scx_qmap.c | 155 + tools/sched_ext/scx_show_state.py | 42 + tools/sched_ext/scx_simple.bpf.c | 151 + tools/sched_ext/scx_simple.c | 107 + tools/testing/selftests/Makefile | 9 +- .../testing/selftests/bpf/bpf_experimental.h | 27 + .../selftests/bpf/bpf_testmod/bpf_testmod.c | 108 +- .../selftests/bpf/bpf_testmod/bpf_testmod.h | 17 + .../selftests/bpf/prog_tests/bpf_iter.c | 44 +- .../selftests/bpf/prog_tests/cgroup_iter.c | 33 + .../bpf/prog_tests/global_func_dead_code.c | 60 + .../testing/selftests/bpf/prog_tests/iters.c | 209 + .../selftests/bpf/prog_tests/rcu_read_lock.c | 6 + .../selftests/bpf/prog_tests/spin_lock.c | 2 + .../prog_tests/test_struct_ops_maybe_null.c | 46 + .../bpf/prog_tests/test_struct_ops_module.c | 86 + .../testing/selftests/bpf/prog_tests/timer.c | 4 + .../selftests/bpf/prog_tests/verifier.c | 4 + ...f_iter_task_vma.c => bpf_iter_task_vmas.c} | 0 .../{bpf_iter_task.c => bpf_iter_tasks.c} | 0 .../bpf/progs/freplace_dead_global_func.c | 11 + tools/testing/selftests/bpf/progs/iters_css.c | 72 + .../selftests/bpf/progs/iters_css_task.c | 102 + .../testing/selftests/bpf/progs/iters_task.c | 41 + .../selftests/bpf/progs/iters_task_failure.c | 105 + .../selftests/bpf/progs/iters_task_vma.c | 54 + .../selftests/bpf/progs/iters_testmod_seq.c | 50 + .../selftests/bpf/progs/rcu_read_lock.c | 120 + .../bpf/progs/struct_ops_maybe_null.c | 29 + .../bpf/progs/struct_ops_maybe_null_fail.c | 24 + .../selftests/bpf/progs/struct_ops_module.c | 37 + .../selftests/bpf/progs/test_global_func12.c | 4 +- .../selftests/bpf/progs/test_spin_lock.c | 65 + .../selftests/bpf/progs/test_spin_lock_fail.c | 44 + tools/testing/selftests/bpf/progs/timer.c | 63 +- .../selftests/bpf/progs/verifier_bits_iter.c | 232 + .../bpf/progs/verifier_global_subprogs.c | 101 + .../selftests/bpf/progs/verifier_spin_lock.c | 2 +- .../bpf/progs/verifier_subprog_precision.c | 4 +- tools/testing/selftests/bpf/test_loader.c | 9 +- tools/testing/selftests/bpf/test_maps.c | 18 +- tools/testing/selftests/bpf/test_maps.h | 5 + tools/testing/selftests/sched_ext/.gitignore | 6 + tools/testing/selftests/sched_ext/Makefile | 211 + tools/testing/selftests/sched_ext/config | 9 + .../selftests/sched_ext/create_dsq.bpf.c | 58 + .../testing/selftests/sched_ext/create_dsq.c | 57 + .../sched_ext/ddsp_bogus_dsq_fail.bpf.c | 42 + .../selftests/sched_ext/ddsp_bogus_dsq_fail.c | 60 + .../sched_ext/ddsp_vtimelocal_fail.bpf.c | 39 + .../sched_ext/ddsp_vtimelocal_fail.c | 59 + .../selftests/sched_ext/dsp_local_on.bpf.c | 68 + .../selftests/sched_ext/dsp_local_on.c | 60 + .../sched_ext/enq_last_no_enq_fails.bpf.c | 29 + .../sched_ext/enq_last_no_enq_fails.c | 64 + .../sched_ext/enq_select_cpu_fails.bpf.c | 43 + .../sched_ext/enq_select_cpu_fails.c | 61 + tools/testing/selftests/sched_ext/exit.bpf.c | 86 + tools/testing/selftests/sched_ext/exit.c | 64 + tools/testing/selftests/sched_ext/exit_test.h | 20 + .../testing/selftests/sched_ext/hotplug.bpf.c | 61 + tools/testing/selftests/sched_ext/hotplug.c | 170 + .../selftests/sched_ext/hotplug_test.h | 15 + .../sched_ext/init_enable_count.bpf.c | 53 + .../selftests/sched_ext/init_enable_count.c | 157 + .../testing/selftests/sched_ext/maximal.bpf.c | 166 + tools/testing/selftests/sched_ext/maximal.c | 54 + .../selftests/sched_ext/maybe_null.bpf.c | 36 + .../testing/selftests/sched_ext/maybe_null.c | 49 + .../sched_ext/maybe_null_fail_dsp.bpf.c | 25 + .../sched_ext/maybe_null_fail_yld.bpf.c | 28 + .../testing/selftests/sched_ext/minimal.bpf.c | 21 + tools/testing/selftests/sched_ext/minimal.c | 58 + .../selftests/sched_ext/prog_run.bpf.c | 33 + tools/testing/selftests/sched_ext/prog_run.c | 78 + .../testing/selftests/sched_ext/reload_loop.c | 74 + tools/testing/selftests/sched_ext/runner.c | 212 + tools/testing/selftests/sched_ext/scx_test.h | 131 + .../selftests/sched_ext/select_cpu_dfl.bpf.c | 40 + .../selftests/sched_ext/select_cpu_dfl.c | 75 + .../sched_ext/select_cpu_dfl_nodispatch.bpf.c | 89 + .../sched_ext/select_cpu_dfl_nodispatch.c | 75 + .../sched_ext/select_cpu_dispatch.bpf.c | 41 + .../selftests/sched_ext/select_cpu_dispatch.c | 73 + .../select_cpu_dispatch_bad_dsq.bpf.c | 37 + .../sched_ext/select_cpu_dispatch_bad_dsq.c | 59 + .../select_cpu_dispatch_dbl_dsp.bpf.c | 38 + .../sched_ext/select_cpu_dispatch_dbl_dsp.c | 59 + .../sched_ext/select_cpu_vtime.bpf.c | 92 + .../selftests/sched_ext/select_cpu_vtime.c | 62 + .../selftests/sched_ext/test_example.c | 49 + tools/testing/selftests/sched_ext/util.c | 71 + tools/testing/selftests/sched_ext/util.h | 13 + 224 files changed, 24754 insertions(+), 3360 deletions(-) create mode 100644 Documentation/scheduler/sched-ext.rst create mode 100644 include/linux/sched/ext.h create mode 100644 include/trace/events/sched_ext.h delete mode 100644 kernel/bpf/bpf_struct_ops_types.h create mode 100644 kernel/sched/ext.c create mode 100644 kernel/sched/ext.h create mode 100644 kernel/sched/ext_idle.c create mode 100644 kernel/sched/ext_idle.h create mode 100644 kernel/sched/syscalls.c create mode 100644 tools/sched_ext/.gitignore create mode 100644 tools/sched_ext/Makefile create mode 100644 tools/sched_ext/README.md create mode 100644 tools/sched_ext/include/bpf-compat/gnu/stubs.h create mode 100644 tools/sched_ext/include/scx/common.bpf.h create mode 100644 tools/sched_ext/include/scx/common.h create mode 100644 tools/sched_ext/include/scx/compat.bpf.h create mode 100644 tools/sched_ext/include/scx/compat.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.h create mode 100644 tools/sched_ext/include/scx/enums.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.h create mode 100644 tools/sched_ext/include/scx/user_exit_info.h create mode 100644 tools/sched_ext/scx_central.bpf.c create mode 100644 tools/sched_ext/scx_central.c create mode 100644 tools/sched_ext/scx_flatcg.bpf.c create mode 100644 tools/sched_ext/scx_flatcg.c create mode 100644 tools/sched_ext/scx_flatcg.h create mode 100644 tools/sched_ext/scx_qmap.bpf.c create mode 100644 tools/sched_ext/scx_qmap.c create mode 100644 tools/sched_ext/scx_show_state.py create mode 100644 tools/sched_ext/scx_simple.bpf.c create mode 100644 tools/sched_ext/scx_simple.c create mode 100644 tools/testing/selftests/bpf/prog_tests/global_func_dead_code.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c rename tools/testing/selftests/bpf/progs/{bpf_iter_task_vma.c => bpf_iter_task_vmas.c} (100%) rename tools/testing/selftests/bpf/progs/{bpf_iter_task.c => bpf_iter_tasks.c} (100%) create mode 100644 tools/testing/selftests/bpf/progs/freplace_dead_global_func.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_failure.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_vma.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null_fail.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_module.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_bits_iter.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_global_subprogs.c create mode 100644 tools/testing/selftests/sched_ext/.gitignore create mode 100644 tools/testing/selftests/sched_ext/Makefile create mode 100644 tools/testing/selftests/sched_ext/config create mode 100644 tools/testing/selftests/sched_ext/create_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/create_dsq.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.bpf.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.c create mode 100644 tools/testing/selftests/sched_ext/exit.bpf.c create mode 100644 tools/testing/selftests/sched_ext/exit.c create mode 100644 tools/testing/selftests/sched_ext/exit_test.h create mode 100644 tools/testing/selftests/sched_ext/hotplug.bpf.c create mode 100644 tools/testing/selftests/sched_ext/hotplug.c create mode 100644 tools/testing/selftests/sched_ext/hotplug_test.h create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.bpf.c create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.c create mode 100644 tools/testing/selftests/sched_ext/maximal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maximal.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_yld.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.bpf.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.c create mode 100644 tools/testing/selftests/sched_ext/reload_loop.c create mode 100644 tools/testing/selftests/sched_ext/runner.c create mode 100644 tools/testing/selftests/sched_ext/scx_test.h create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.c create mode 100644 tools/testing/selftests/sched_ext/test_example.c create mode 100644 tools/testing/selftests/sched_ext/util.c create mode 100644 tools/testing/selftests/sched_ext/util.h -- 2.34.1

1 399

[PATCH openEuler-1.0-LTS v2 0/2] xfs: fix stale imap reuse during page writeback
by Long Li 16 Dec '25

16 Dec '25

During page write-back operations, a copy of the imap is stored in wpc->imap. Even if the file's imap mapping changes during this process, the subsequent operations continue to reuse wpc->imap, causing data to be written to incorrect blocks that are not mapped to that file. Brian Foster (2): xfs: update fork seq counter on data fork changes xfs: remove superfluous writeback mapping eof trimming fs/xfs/libxfs/xfs_bmap.c | 11 ----------- fs/xfs/libxfs/xfs_bmap.h | 1 - fs/xfs/libxfs/xfs_iext_tree.c | 13 ++++++------- fs/xfs/libxfs/xfs_inode_fork.h | 2 +- fs/xfs/xfs_aops.c | 15 --------------- 5 files changed, 7 insertions(+), 35 deletions(-) -- 2.39.2

2 3

[PATCH OLK-6.6] iomap: fix dirty range tracking in iomap_folio_mkwrite_iter
by Long Li 16 Dec '25

16 Dec '25

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IDCSJV ----------------------------------------- When I test xfs with fsstress, got the following assert message: XFS (sda): ino 1a0b0a data fork has delalloc extent at [0x186:0x1] XFS: Assertion failed: 0, file: fs/xfs/xfs_icache.c, line: 1819 ------------[ cut here ]------------ kernel BUG at fs/xfs/xfs_message.c:102! invalid opcode: 0000 [#1] PREEMPT SMP CPU: 3 PID: 940 Comm: kworker/3:1 Not tainted 6.6.0-g3697dae9bfac #192 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014 Workqueue: xfs-inodegc/sda xfs_inodegc_worker RIP: 0010:assfail+0x54/0x60 RSP: 0018:ffffc90003113e08 EFLAGS: 00010202 RAX: 0000000000000000 RBX: ffff8880651dd800 RCX: 000000007fffffff RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff82a12e0c RBP: ffffffffffffff20 R08: 00000000000025c2 R09: 0000000000000000 R10: 000000000000000a R11: 000000000000000a R12: 0000000000000000 R13: ffffffffffffff20 R14: ffff888077948000 R15: 0000000004208060 FS: 0000000000000000(0000) GS:ffff8880bcb80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000561be0e1cf30 CR3: 0000000075fa4000 CR4: 00000000000006e0 Call Trace: <TASK> xfs_inodegc_set_reclaimable+0x1f1/0x220 xfs_inodegc_worker+0x10b/0x2e0 process_scheduled_works+0x1a5/0x5e0 worker_thread+0x1d1/0x4f0 ? apply_workqueue_attrs+0x70/0x70 kthread+0x149/0x1c0 ? kthread_exit+0x50/0x50 ret_from_fork+0x52/0x70 ? kthread_exit+0x50/0x50 ret_from_fork_asm+0x11/0x20 </TASK> Fix the incorrect dirty range tracking in iomap_folio_mkwrite_iter() which could lead to blocks being missed during writeback. Previously, iomap_set_range_dirty() was called with a wrong offset (0), which may cause some modified blocks not being marked as dirty and thus skip writeback. Calculate the correct offset within the folio from the iterator position to ensure all modified blocks are properly marked dirty and written back. Fixes: 0b4d2d8fba90 ("iomap: correct the dirty length in page mkwrite") Signed-off-by: Long Li <leo.lilong(a)huawei.com> --- fs/iomap/buffered-io.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 7a417bd8a9f3..33fbb3f8d45f 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -1562,10 +1562,12 @@ static loff_t iomap_folio_mkwrite_iter(struct iomap_iter *iter, return ret; block_commit_write(&folio->page, 0, length); } else { + size_t poff = offset_in_folio(folio, iter->pos); + WARN_ON_ONCE(!folio_test_uptodate(folio)); ifs_alloc(iter->inode, folio, 0); - iomap_set_range_dirty(folio, 0, length); + iomap_set_range_dirty(folio, poff, length); } return length; -- 2.39.2

2 1

[PATCH OLK-6.6] i40e: remove read access to debugfs files
by Wang Liang 16 Dec '25

16 Dec '25

From: Jacob Keller <jacob.e.keller(a)intel.com> mainline inclusion from mainline-v6.17-rc5 commit 9fcdb1c3c4ba134434694c001dbff343f1ffa319 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ID0R34 CVE: CVE-2025-39901 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- The 'command' and 'netdev_ops' debugfs files are a legacy debugging interface supported by the i40e driver since its early days by commit 02e9c290814c ("i40e: debugfs interface"). Both of these debugfs files provide a read handler which is mostly useless, and which is implemented with questionable logic. They both use a static 256 byte buffer which is initialized to the empty string. In the case of the 'command' file this buffer is literally never used and simply wastes space. In the case of the 'netdev_ops' file, the last command written is saved here. On read, the files contents are presented as the name of the device followed by a colon and then the contents of their respective static buffer. For 'command' this will always be "<device>: ". For 'netdev_ops', this will be "<device>: <last command written>". But note the buffer is shared between all devices operated by this module. At best, it is mostly meaningless information, and at worse it could be accessed simultaneously as there doesn't appear to be any locking mechanism. We have also recently received multiple reports for both read functions about their use of snprintf and potential overflow that could result in reading arbitrary kernel memory. For the 'command' file, this is definitely impossible, since the static buffer is always zero and never written to. For the 'netdev_ops' file, it does appear to be possible, if the user carefully crafts the command input, it will be copied into the buffer, which could be large enough to cause snprintf to truncate, which then causes the copy_to_user to read beyond the length of the buffer allocated by kzalloc. A minimal fix would be to replace snprintf() with scnprintf() which would cap the return to the number of bytes written, preventing an overflow. A more involved fix would be to drop the mostly useless static buffers, saving 512 bytes and modifying the read functions to stop needing those as input. Instead, lets just completely drop the read access to these files. These are debug interfaces exposed as part of debugfs, and I don't believe that dropping read access will break any script, as the provided output is pretty useless. You can find the netdev name through other more standard interfaces, and the 'netdev_ops' interface can easily result in garbage if you issue simultaneous writes to multiple devices at once. In order to properly remove the i40e_dbg_netdev_ops_buf, we need to refactor its write function to avoid using the static buffer. Instead, use the same logic as the i40e_dbg_command_write, with an allocated buffer. Update the code to use this instead of the static buffer, and ensure we free the buffer on exit. This fixes simultaneous writes to 'netdev_ops' on multiple devices, and allows us to remove the now unused static buffer along with removing the read access. Fixes: 02e9c290814c ("i40e: debugfs interface") Reported-by: Kunwu Chan <chentao(a)kylinos.cn> Closes: https://lore.kernel.org/intel-wired-lan/20231208031950.47410-1-chentao@kyli… Reported-by: Wang Haoran <haoranwangsec(a)gmail.com> Closes: https://lore.kernel.org/all/CANZ3JQRRiOdtfQJoP9QM=6LS1Jto8PGBGw6y7-TL=BcnzH… Reported-by: Amir Mohammad Jahangirzad <a.jahangirzad(a)gmail.com> Closes: https://lore.kernel.org/all/20250722115017.206969-1-a.jahangirzad@gmail.com/ Signed-off-by: Jacob Keller <jacob.e.keller(a)intel.com> Reviewed-by: Dawid Osuchowski <dawid.osuchowski(a)linux.intel.com> Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov(a)intel.com> Reviewed-by: Simon Horman <horms(a)kernel.org> Reviewed-by: Kunwu Chan <kunwu.chan(a)linux.dev> Tested-by: Rinitha S <sx.rinitha(a)intel.com> (A Contingent worker at Intel) Signed-off-by: Tony Nguyen <anthony.l.nguyen(a)intel.com> Conflicts: drivers/net/ethernet/intel/i40e/i40e_debugfs.c [conflicts due to not merge 43f4466ca91d ("i40e: Add helper to access main VSI")] Signed-off-by: Wang Liang <wangliang74(a)huawei.com> --- .../net/ethernet/intel/i40e/i40e_debugfs.c | 121 +++--------------- 1 file changed, 19 insertions(+), 102 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c index a2fca58a91c3..35ce578dd6f3 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c +++ b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c @@ -58,47 +58,6 @@ static struct i40e_veb *i40e_dbg_find_veb(struct i40e_pf *pf, int seid) * setup, adding or removing filters, or other things. Many of * these will be useful for some forms of unit testing. **************************************************************/ -static char i40e_dbg_command_buf[256] = ""; - -/** - * i40e_dbg_command_read - read for command datum - * @filp: the opened file - * @buffer: where to write the data for the user to read - * @count: the size of the user's buffer - * @ppos: file position offset - **/ -static ssize_t i40e_dbg_command_read(struct file *filp, char __user *buffer, - size_t count, loff_t *ppos) -{ - struct i40e_pf *pf = filp->private_data; - int bytes_not_copied; - int buf_size = 256; - char *buf; - int len; - - /* don't allow partial reads */ - if (*ppos != 0) - return 0; - if (count < buf_size) - return -ENOSPC; - - buf = kzalloc(buf_size, GFP_KERNEL); - if (!buf) - return -ENOSPC; - - len = snprintf(buf, buf_size, "%s: %s\n", - pf->vsi[pf->lan_vsi]->netdev->name, - i40e_dbg_command_buf); - - bytes_not_copied = copy_to_user(buffer, buf, len); - kfree(buf); - - if (bytes_not_copied) - return -EFAULT; - - *ppos = len; - return len; -} static char *i40e_filter_state_string[] = { "INVALID", @@ -1637,7 +1596,6 @@ static ssize_t i40e_dbg_command_write(struct file *filp, static const struct file_operations i40e_dbg_command_fops = { .owner = THIS_MODULE, .open = simple_open, - .read = i40e_dbg_command_read, .write = i40e_dbg_command_write, }; @@ -1646,47 +1604,6 @@ static const struct file_operations i40e_dbg_command_fops = { * The netdev_ops entry in debugfs is for giving the driver commands * to be executed from the netdev operations. **************************************************************/ -static char i40e_dbg_netdev_ops_buf[256] = ""; - -/** - * i40e_dbg_netdev_ops_read - read for netdev_ops datum - * @filp: the opened file - * @buffer: where to write the data for the user to read - * @count: the size of the user's buffer - * @ppos: file position offset - **/ -static ssize_t i40e_dbg_netdev_ops_read(struct file *filp, char __user *buffer, - size_t count, loff_t *ppos) -{ - struct i40e_pf *pf = filp->private_data; - int bytes_not_copied; - int buf_size = 256; - char *buf; - int len; - - /* don't allow partal reads */ - if (*ppos != 0) - return 0; - if (count < buf_size) - return -ENOSPC; - - buf = kzalloc(buf_size, GFP_KERNEL); - if (!buf) - return -ENOSPC; - - len = snprintf(buf, buf_size, "%s: %s\n", - pf->vsi[pf->lan_vsi]->netdev->name, - i40e_dbg_netdev_ops_buf); - - bytes_not_copied = copy_to_user(buffer, buf, len); - kfree(buf); - - if (bytes_not_copied) - return -EFAULT; - - *ppos = len; - return len; -} /** * i40e_dbg_netdev_ops_write - write into netdev_ops datum @@ -1700,35 +1617,36 @@ static ssize_t i40e_dbg_netdev_ops_write(struct file *filp, size_t count, loff_t *ppos) { struct i40e_pf *pf = filp->private_data; + char *cmd_buf, *buf_tmp; int bytes_not_copied; struct i40e_vsi *vsi; - char *buf_tmp; int vsi_seid; int i, cnt; /* don't allow partial writes */ if (*ppos != 0) return 0; - if (count >= sizeof(i40e_dbg_netdev_ops_buf)) - return -ENOSPC; - memset(i40e_dbg_netdev_ops_buf, 0, sizeof(i40e_dbg_netdev_ops_buf)); - bytes_not_copied = copy_from_user(i40e_dbg_netdev_ops_buf, - buffer, count); - if (bytes_not_copied) + cmd_buf = kzalloc(count + 1, GFP_KERNEL); + if (!cmd_buf) + return count; + bytes_not_copied = copy_from_user(cmd_buf, buffer, count); + if (bytes_not_copied) { + kfree(cmd_buf); return -EFAULT; - i40e_dbg_netdev_ops_buf[count] = '\0'; + } + cmd_buf[count] = '\0'; - buf_tmp = strchr(i40e_dbg_netdev_ops_buf, '\n'); + buf_tmp = strchr(cmd_buf, '\n'); if (buf_tmp) { *buf_tmp = '\0'; - count = buf_tmp - i40e_dbg_netdev_ops_buf + 1; + count = buf_tmp - cmd_buf + 1; } - if (strncmp(i40e_dbg_netdev_ops_buf, "change_mtu", 10) == 0) { + if (strncmp(cmd_buf, "change_mtu", 10) == 0) { int mtu; - cnt = sscanf(&i40e_dbg_netdev_ops_buf[11], "%i %i", + cnt = sscanf(&cmd_buf[11], "%i %i", &vsi_seid, &mtu); if (cnt != 2) { dev_info(&pf->pdev->dev, "change_mtu <vsi_seid> <mtu>\n"); @@ -1750,8 +1668,8 @@ static ssize_t i40e_dbg_netdev_ops_write(struct file *filp, dev_info(&pf->pdev->dev, "Could not acquire RTNL - please try again\n"); } - } else if (strncmp(i40e_dbg_netdev_ops_buf, "set_rx_mode", 11) == 0) { - cnt = sscanf(&i40e_dbg_netdev_ops_buf[11], "%i", &vsi_seid); + } else if (strncmp(cmd_buf, "set_rx_mode", 11) == 0) { + cnt = sscanf(&cmd_buf[11], "%i", &vsi_seid); if (cnt != 1) { dev_info(&pf->pdev->dev, "set_rx_mode <vsi_seid>\n"); goto netdev_ops_write_done; @@ -1771,8 +1689,8 @@ static ssize_t i40e_dbg_netdev_ops_write(struct file *filp, dev_info(&pf->pdev->dev, "Could not acquire RTNL - please try again\n"); } - } else if (strncmp(i40e_dbg_netdev_ops_buf, "napi", 4) == 0) { - cnt = sscanf(&i40e_dbg_netdev_ops_buf[4], "%i", &vsi_seid); + } else if (strncmp(cmd_buf, "napi", 4) == 0) { + cnt = sscanf(&cmd_buf[4], "%i", &vsi_seid); if (cnt != 1) { dev_info(&pf->pdev->dev, "napi <vsi_seid>\n"); goto netdev_ops_write_done; @@ -1790,21 +1708,20 @@ static ssize_t i40e_dbg_netdev_ops_write(struct file *filp, dev_info(&pf->pdev->dev, "napi called\n"); } } else { - dev_info(&pf->pdev->dev, "unknown command '%s'\n", - i40e_dbg_netdev_ops_buf); + dev_info(&pf->pdev->dev, "unknown command '%s'\n", cmd_buf); dev_info(&pf->pdev->dev, "available commands\n"); dev_info(&pf->pdev->dev, " change_mtu <vsi_seid> <mtu>\n"); dev_info(&pf->pdev->dev, " set_rx_mode <vsi_seid>\n"); dev_info(&pf->pdev->dev, " napi <vsi_seid>\n"); } netdev_ops_write_done: + kfree(cmd_buf); return count; } static const struct file_operations i40e_dbg_netdev_ops_fops = { .owner = THIS_MODULE, .open = simple_open, - .read = i40e_dbg_netdev_ops_read, .write = i40e_dbg_netdev_ops_write, }; -- 2.34.1

2 1

[PATCH OLK-6.6 0/2] ARM: fix hash_name() issue
by Zizhi Wo 16 Dec '25

16 Dec '25

Fix hash_name() issue. Russell King (Oracle) (2): ARM: allow __do_kernel_fault() to report execution of memory faults ARM: fix hash_name() fault arch/arm/mm/fault.c | 57 +++++++++++++++++++++++++++++++++++++-------- 1 file changed, 47 insertions(+), 10 deletions(-) -- 2.39.2

2 3

[PATCH OLK-5.10 0/2] ARM: fix hash_name() issue
by Zizhi Wo 16 Dec '25

16 Dec '25

Fix hash_name() issue. Russell King (Oracle) (2): ARM: allow __do_kernel_fault() to report execution of memory faults ARM: fix hash_name() fault arch/arm/mm/fault.c | 63 +++++++++++++++++++++++++++++++++++---------- 1 file changed, 50 insertions(+), 13 deletions(-) -- 2.39.2

2 3

[PATCH OLK-6.6 1/2] ARM: allow __do_kernel_fault() to report execution of memory faults
by Zizhi Wo 16 Dec '25

16 Dec '25

From: "Russell King (Oracle)" <rmk+kernel(a)armlinux.org.uk> mainline inclusion from mainline-v6.19-rc1 commit 40b466db1dffb41f0529035c59c5739636d0e5b8 category: other bugzilla: https://gitee.com/openeuler/kernel/issues/IDD7MD Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- Allow __do_kernel_fault() to detect the execution of memory, so we can provide the same fault message as do_page_fault() would do. This is required when we split the kernel address fault handling from the main do_page_fault() code path. Reviewed-by: Xie Yuanbin <xieyuanbin1(a)huawei.com> Tested-by: Xie Yuanbin <xieyuanbin1(a)huawei.com> Signed-off-by: Russell King (Oracle) <rmk+kernel(a)armlinux.org.uk> Conflicts: arch/arm/mm/fault.c [There is a compilation error because the definition of is_permission_fault() comes after __do_kernel_fault(). Referring to Russell King's follow-up change: "Group is_permission_fault() with is_translation_fault(), which is needed to use is_permission_fault() in __do_kernel_fault(). As this is static inline, there is no need for this to be under CONFIG_MMU."] Signed-off-by: Zizhi Wo <wozizhi(a)huawei.com> --- arch/arm/mm/fault.c | 28 +++++++++++++++------------- 1 file changed, 15 insertions(+), 13 deletions(-) diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c index ed1a25f457e4..4c0ee81befb1 100644 --- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c @@ -128,6 +128,19 @@ static inline bool is_translation_fault(unsigned int fsr) return false; } +static inline bool is_permission_fault(unsigned int fsr) +{ + int fs = fsr_fs(fsr); +#ifdef CONFIG_ARM_LPAE + if ((fs & FS_MMU_NOLL_MASK) == FS_PERM_NOLL) + return true; +#else + if (fs == FS_L1_PERM || fs == FS_L2_PERM) + return true; +#endif + return false; +} + static void die_kernel_fault(const char *msg, struct mm_struct *mm, unsigned long addr, unsigned int fsr, struct pt_regs *regs) @@ -163,6 +176,8 @@ __do_kernel_fault(struct mm_struct *mm, unsigned long addr, unsigned int fsr, */ if (addr < PAGE_SIZE) { msg = "NULL pointer dereference"; + } else if (is_permission_fault(fsr) && fsr & FSR_LNX_PF) { + msg = "execution of memory"; } else { if (is_translation_fault(fsr) && kfence_handle_page_fault(addr, is_write_fault(fsr), regs)) @@ -229,19 +244,6 @@ void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs) #define VM_FAULT_BADMAP ((__force vm_fault_t)0x010000) #define VM_FAULT_BADACCESS ((__force vm_fault_t)0x020000) -static inline bool is_permission_fault(unsigned int fsr) -{ - int fs = fsr_fs(fsr); -#ifdef CONFIG_ARM_LPAE - if ((fs & FS_MMU_NOLL_MASK) == FS_PERM_NOLL) - return true; -#else - if (fs == FS_L1_PERM || fs == FS_L2_PERM) - return true; -#endif - return false; -} - static int __kprobes do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs) { -- 2.39.2

2 2

[PATCH OLK-5.10 0/2] Fix CVE-2025-39810
by Zhao Yipeng 16 Dec '25

16 Dec '25

Michael Chan (1): [Backport] bnxt_en: Fix possible crash after creating sw mqprio TCs Sreekanth Reddy (1): [Backport] bnxt_en: Fix memory corruption when FW resources change during ifdown drivers/net/ethernet/broadcom/bnxt/bnxt.c | 34 ++++++++++++++----- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 + drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c | 2 +- .../net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 4 +-- drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 2 +- 5 files changed, 30 insertions(+), 13 deletions(-) -- 2.34.1

2 3

openEuler Kernel SIG双周例会
by openEuler conference 16 Dec '25

16 Dec '25

您好！ Kernel 邀请您参加 2025-12-19 14:00 召开的WeLink会议(自动录制) 会议主题：openEuler Kernel SIG双周例会会议内容： 1. 进展update 2. 议题征集中（新增议题可回复本邮件申请，或填报至会议纪要看板）会议链接：https://meeting.huaweicloud.com:36443/#/j/962719880 会议纪要：https://etherpad.openeuler.org/p/Kernel-meetings 更多资讯尽在：https://www.openeuler.org/zh/ Hello! Kernel invites you to attend the WeLink conference(auto recording) will be held at 2025-12-19 14:00, The subject of the conference is openEuler Kernel SIG双周例会 Summary: 1. 进展update 2. 议题征集中（新增议题可回复本邮件申请，或填报至会议纪要看板） You can join the meeting at https://meeting.huaweicloud.com:36443/#/j/962719880 Add topics at https://etherpad.openeuler.org/p/Kernel-meetings More information: https://www.openeuler.org/en/

1 0

[PATCH OLK-6.6] arm64/mpam: Synchronize MPAM Partid to kernel mode
by Zeng Heng 15 Dec '25

15 Dec '25

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IDD55N -------------------------------- Currently, the MPAM implementation on Linux only applies isolation control to tasks' user-space, while resource allocation for execution in kernel mode is according to the root group's (Partid=0) policy. With MPAM adding L2 cache support, and given small L2 capacity, frequently switching partition policies between kernel and user space would cause L2 thrashing and degrade performance. Moreover, to support MPAM isolation for kernel-space processes, kernel space should adopt the same partition policy as user space. To ensure the Partid state is updated promptly after the CPU exits from low power mode, add wmb() barrier in the CPU_PM_EXIT flow to guarantee that. Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- arch/arm64/include/asm/mpam.h | 1 + arch/arm64/kernel/cpufeature.c | 2 +- arch/arm64/kernel/mpam.c | 4 ++-- 3 files changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/arm64/include/asm/mpam.h b/arch/arm64/include/asm/mpam.h index 8caac70e22ed..db4d559e8936 100644 --- a/arch/arm64/include/asm/mpam.h +++ b/arch/arm64/include/asm/mpam.h @@ -161,6 +161,7 @@ static inline void mpam_thread_switch(struct task_struct *tsk) return; /* Synchronising this write is left until the ERET to EL0 */ + write_sysreg_s(regval, SYS_MPAM1_EL1); write_sysreg_s(regval, SYS_MPAM0_EL1); WRITE_ONCE(per_cpu(arm64_mpam_current, cpu), regval); } diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 414b9d28ecd1..4cc8691dc7d8 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -2425,7 +2425,7 @@ cpu_enable_mpam(const struct arm64_cpu_capabilities *entry) * where latency sensitive tasks have to wait for a task that has * been throttled to release the lock. */ - write_sysreg_s(0, SYS_MPAM1_EL1); + write_sysreg_s(regval, SYS_MPAM1_EL1); write_sysreg_s(regval, SYS_MPAM0_EL1); } diff --git a/arch/arm64/kernel/mpam.c b/arch/arm64/kernel/mpam.c index 3f070cbab420..008c44c96a75 100644 --- a/arch/arm64/kernel/mpam.c +++ b/arch/arm64/kernel/mpam.c @@ -40,9 +40,9 @@ static int mpam_pm_notifier(struct notifier_block *self, * value has changed under our feet. */ regval = READ_ONCE(per_cpu(arm64_mpam_current, cpu)); - write_sysreg_s(0, SYS_MPAM1_EL1); + write_sysreg_s(regval, SYS_MPAM1_EL1); write_sysreg_s(regval, SYS_MPAM0_EL1); - + wmb(); return NOTIFY_OK; default: return NOTIFY_DONE; -- 2.25.1

2 1

[PATCH OLK-6.6] xsched: prevent linked list corruption in RT priority updates
by Liu Kai 15 Dec '25

15 Dec '25

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IDB5TR ----------------------------------------- Add scheduling class validation in xsched_rt_prio_set() to ensure only RT-scheduled tasks can perform RT priority modifications. Previously, CFS tasks could trigger xse_rt_del() operations via sys_xsched_setattr, corrupting CFS runqueue linked lists. The fix checks xse->class == &rt_xsched_class before any RT scheduler operations, maintaining proper separation between CFS and RT scheduling domains. Fixes: 832cfa264d7c ("xsched: add xsched_{set,get}attr syscall") Signed-off-by: Liu Kai <liukai284(a)huawei.com> --- kernel/xsched/rt.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/kernel/xsched/rt.c b/kernel/xsched/rt.c index 498d5ac618a1..db7d97fed787 100644 --- a/kernel/xsched/rt.c +++ b/kernel/xsched/rt.c @@ -168,17 +168,20 @@ void xsched_rt_prio_set(pid_t tgid, unsigned int prio) mutex_lock(&xcu->xcu_lock); ctx = ctx_find_by_tgid_and_xcu(tgid, xcu); - if (ctx) { - xse = &ctx->xse; - xse->rt.prio = clamp_t(unsigned int, prio, XSE_PRIO_HIGH, XSE_PRIO_LOW); - if (xse->on_rq) { - xse_rt_del(xse); - xse_rt_add(xse, xcu); - } + if (!ctx || ctx->xse.class != &rt_xsched_class) { + mutex_unlock(&xcu->xcu_lock); + mutex_unlock(&xcu->ctx_list_lock); + continue; + } + + xse = &ctx->xse; + xse->rt.prio = clamp_t(unsigned int, prio, XSE_PRIO_HIGH, XSE_PRIO_LOW); + if (xse->on_rq) { + xse_rt_del(xse); + xse_rt_add(xse, xcu); } mutex_unlock(&xcu->xcu_lock); mutex_unlock(&xcu->ctx_list_lock); } } - -- 2.34.1

2 1

[openeuler:OLK-6.6 3542/3542] arch/x86/kernel/early-quirks.c:727:34: warning: no previous prototype for 'kh40000_get_direct_dma_ops'
by kernel test robot 15 Dec '25

15 Dec '25

Hi leoliu-oc, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 81b22958142c03b02c766c79cd1554ebfa142be4 commit: 11557c1ae4529f133483879b7ee00b7d8c653be7 [3542/3542] x86/cpu/zhaoxin: Encapsulate access to kh40000_dma_direct_ops within function config: x86_64-randconfig-161-20251215 (https://download.01.org/0day-ci/archive/20251215/202512151614.LDi8I6GA-lkp@…) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512151614.LDi8I6GA-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512151614.LDi8I6GA-lkp@intel.com/ All warnings (new ones prefixed by >>): arch/x86/kernel/early-quirks.c:722:6: warning: no previous prototype for 'is_zhaoxin_kh40000' [-Wmissing-prototypes] 722 | bool is_zhaoxin_kh40000(void) | ^~~~~~~~~~~~~~~~~~ >> arch/x86/kernel/early-quirks.c:727:34: warning: no previous prototype for 'kh40000_get_direct_dma_ops' [-Wmissing-prototypes] 727 | __weak const struct dma_map_ops *kh40000_get_direct_dma_ops(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/kh40000_get_direct_dma_ops +727 arch/x86/kernel/early-quirks.c 721 > 722 bool is_zhaoxin_kh40000(void) 723 { 724 return zhaoxin_kh40000; 725 } 726 > 727 __weak const struct dma_map_ops *kh40000_get_direct_dma_ops(void) 728 { 729 return dma_ops; 730 } 731 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:OLK-6.6 3542/3542] lib/test_hexdump.c:116:3: warning: 'strncpy' output truncated copying between 0 and 32 bytes from a string of length 32
by kernel test robot 15 Dec '25

15 Dec '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 81b22958142c03b02c766c79cd1554ebfa142be4 commit: f04c0f3eb9b49427c273cd3e4d5a2ff895855b4b [3542/3542] make OPTIMIZE_INLINING config editable config: arm64-randconfig-004-20251215 (https://download.01.org/0day-ci/archive/20251215/202512151641.xBwOsIKs-lkp@…) compiler: aarch64-linux-gcc (GCC) 9.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512151641.xBwOsIKs-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512151641.xBwOsIKs-lkp@intel.com/ All warnings (new ones prefixed by >>): lib/test_hexdump.c: In function 'test_hexdump_prepare_test.isra.0': >> lib/test_hexdump.c:116:3: warning: 'strncpy' output truncated copying between 0 and 32 bytes from a string of length 32 [-Wstringop-truncation] 116 | strncpy(p, data_a, l); | ^~~~~~~~~~~~~~~~~~~~~ vim +/strncpy +116 lib/test_hexdump.c 7aaf4c3e1235cc lib/test_hexdump.c Andy Shevchenko 2016-01-20 66 87977ca6bcd051 lib/test_hexdump.c Andy Shevchenko 2016-01-20 67 static void __init test_hexdump_prepare_test(size_t len, int rowsize, 87977ca6bcd051 lib/test_hexdump.c Andy Shevchenko 2016-01-20 68 int groupsize, char *test, 87977ca6bcd051 lib/test_hexdump.c Andy Shevchenko 2016-01-20 69 size_t testlen, bool ascii) 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 70 { 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 71 char *p; 17974c054db303 lib/test-hexdump.c Linus Torvalds 2015-04-19 72 const char * const *result; 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 73 size_t l = len; 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 74 int gs = groupsize, rs = rowsize; 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 75 unsigned int i; de9df3993cfffd lib/test_hexdump.c Christophe Leroy 2018-08-21 76 const bool is_be = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN); 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 77 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 78 if (rs != 16 && rs != 32) 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 79 rs = 16; 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 80 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 81 if (l > rs) 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 82 l = rs; 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 83 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 84 if (!is_power_of_2(gs) || gs > 8 || (len % gs != 0)) 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 85 gs = 1; 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 86 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 87 if (gs == 8) de9df3993cfffd lib/test_hexdump.c Christophe Leroy 2018-08-21 88 result = is_be ? test_data_8_be : test_data_8_le; 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 89 else if (gs == 4) de9df3993cfffd lib/test_hexdump.c Christophe Leroy 2018-08-21 90 result = is_be ? test_data_4_be : test_data_4_le; 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 91 else if (gs == 2) de9df3993cfffd lib/test_hexdump.c Christophe Leroy 2018-08-21 92 result = is_be ? test_data_2_be : test_data_2_le; 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 93 else de9df3993cfffd lib/test_hexdump.c Christophe Leroy 2018-08-21 94 result = test_data_1; 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 95 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 96 /* hex dump */ 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 97 p = test; 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 98 for (i = 0; i < l / gs; i++) { 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 99 const char *q = *result++; 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 100 size_t amount = strlen(q); 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 101 b1286ed7158e9b lib/test_hexdump.c Linus Torvalds 2018-11-30 102 memcpy(p, q, amount); 3db4a987180acf lib/test_hexdump.c Andy Shevchenko 2016-01-20 103 p += amount; 3db4a987180acf lib/test_hexdump.c Andy Shevchenko 2016-01-20 104 3db4a987180acf lib/test_hexdump.c Andy Shevchenko 2016-01-20 105 *p++ = ' '; 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 106 } 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 107 if (i) 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 108 p--; 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 109 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 110 /* ASCII part */ 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 111 if (ascii) { 3db4a987180acf lib/test_hexdump.c Andy Shevchenko 2016-01-20 112 do { 3db4a987180acf lib/test_hexdump.c Andy Shevchenko 2016-01-20 113 *p++ = ' '; 3db4a987180acf lib/test_hexdump.c Andy Shevchenko 2016-01-20 114 } while (p < test + rs * 2 + rs / gs + 1); 3db4a987180acf lib/test_hexdump.c Andy Shevchenko 2016-01-20 115 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 @116 strncpy(p, data_a, l); 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 117 p += l; 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 118 } 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 119 64d1d77a44697a lib/test-hexdump.c Andy Shevchenko 2015-02-12 120 *p = '\0'; 87977ca6bcd051 lib/test_hexdump.c Andy Shevchenko 2016-01-20 121 } 87977ca6bcd051 lib/test_hexdump.c Andy Shevchenko 2016-01-20 122 :::::: The code at line 116 was first introduced by commit :::::: 64d1d77a44697af8e314939ecef30642c68309cb hexdump: introduce test suite :::::: TO: Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> :::::: CC: Linus Torvalds <torvalds(a)linux-foundation.org> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-5.10] iommu/arm-smmu-v3-sva: Fix mm use-after-free
by Zhang Yuwei 15 Dec '25

15 Dec '25

From: Jean-Philippe Brucker <jean-philippe(a)linaro.org> mainline inclusion from mainline-v5.19-rc1 commit cbd23144f7662b00bcde32a938c4a4057e476d68 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IBP4KI Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- We currently call arm64_mm_context_put() without holding a reference to the mm, which can result in use-after-free. Call mmgrab()/mmdrop() to ensure the mm only gets freed after we unpinned the ASID. Fixes: 32784a9562fb ("iommu/arm-smmu-v3: Implement iommu_sva_bind/unbind()") Signed-off-by: Jean-Philippe Brucker <jean-philippe(a)linaro.org> Tested-by: Zhangfei Gao <zhangfei.gao(a)linaro.org> Link: https://lore.kernel.org/r/20220426130444.300556-1-jean-philippe@linaro.org Signed-off-by: Will Deacon <will(a)kernel.org> Conflicts: drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c [commit 685ace6c824e merged for add trace event] Signed-off-by: Zhang Yuwei <zhangyuwei20(a)huawei.com> --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c index afdfd10290be..0040294ad62d 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c @@ -6,6 +6,7 @@ #include <linux/mm.h> #include <linux/mmu_context.h> #include <linux/mmu_notifier.h> +#include <linux/sched/mm.h> #include <linux/slab.h> #include <trace/events/smmu.h> @@ -98,9 +99,14 @@ static struct arm_smmu_ctx_desc *arm_smmu_alloc_shared_cd(struct mm_struct *mm) struct arm_smmu_ctx_desc *cd; struct arm_smmu_ctx_desc *ret = NULL; + /* Don't free the mm until we release the ASID */ + mmgrab(mm); + asid = arm64_mm_context_get(mm); - if (!asid) - return ERR_PTR(-ESRCH); + if (!asid) { + err = -ESRCH; + goto out_drop_mm; + } cd = kzalloc(sizeof(*cd), GFP_KERNEL); if (!cd) { @@ -169,6 +175,8 @@ static struct arm_smmu_ctx_desc *arm_smmu_alloc_shared_cd(struct mm_struct *mm) kfree(cd); out_put_context: arm64_mm_context_put(mm); +out_drop_mm: + mmdrop(mm); return err < 0 ? ERR_PTR(err) : ret; } @@ -177,6 +185,7 @@ static void arm_smmu_free_shared_cd(struct arm_smmu_ctx_desc *cd) if (arm_smmu_free_asid(cd)) { /* Unpin ASID */ arm64_mm_context_put(cd->mm); + mmdrop(cd->mm); kfree(cd); } } -- 2.43.0

2 1

[openeuler:OLK-6.6 3542/3542] drivers/infiniband/hw/bnxt_re/ib_verbs.c:1685:24: warning: variable 'nq' set but not used
by kernel test robot 15 Dec '25

15 Dec '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 81b22958142c03b02c766c79cd1554ebfa142be4 commit: 978eee07aea817a830a9146bd90f0506ac2f8482 [3542/3542] RDMA/bnxt_re: Fix budget handling of notification queue config: x86_64-buildonly-randconfig-005-20251215 (https://download.01.org/0day-ci/archive/20251215/202512151653.mAEBFOna-lkp@…) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512151653.mAEBFOna-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512151653.mAEBFOna-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/infiniband/hw/bnxt_re/ib_verbs.c:1685:24: warning: variable 'nq' set but not used [-Wunused-but-set-variable] 1685 | struct bnxt_qplib_nq *nq = NULL; | ^ drivers/infiniband/hw/bnxt_re/ib_verbs.c:1732:24: warning: variable 'nq' set but not used [-Wunused-but-set-variable] 1732 | struct bnxt_qplib_nq *nq = NULL; | ^ drivers/infiniband/hw/bnxt_re/ib_verbs.c:2933:24: warning: variable 'nq' set but not used [-Wunused-but-set-variable] 2933 | struct bnxt_qplib_nq *nq; | ^ 3 warnings generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for PTP_1588_CLOCK Depends on [n]: NET [=y] && POSIX_TIMERS [=n] Selected by [y]: - SXE [=y] && NETDEVICES [=y] && ETHERNET [=y] && NET_VENDOR_LINKDATA [=y] && (X86 [=y] || ARM64) && PCI [=y] - SXE_VF [=y] && NETDEVICES [=y] && ETHERNET [=y] && NET_VENDOR_LINKDATA [=y] && (X86 [=y] || ARM64) && PCI [=y] vim +/nq +1685 drivers/infiniband/hw/bnxt_re/ib_verbs.c 1ac5a404797523 Selvin Xavier 2017-02-10 1677 37cb11acf1f72a Devesh Sharma 2018-01-11 1678 /* Shared Receive Queues */ 119181d1d4327d Leon Romanovsky 2020-09-07 1679 int bnxt_re_destroy_srq(struct ib_srq *ib_srq, struct ib_udata *udata) 37cb11acf1f72a Devesh Sharma 2018-01-11 1680 { 37cb11acf1f72a Devesh Sharma 2018-01-11 1681 struct bnxt_re_srq *srq = container_of(ib_srq, struct bnxt_re_srq, 37cb11acf1f72a Devesh Sharma 2018-01-11 1682 ib_srq); 37cb11acf1f72a Devesh Sharma 2018-01-11 1683 struct bnxt_re_dev *rdev = srq->rdev; 37cb11acf1f72a Devesh Sharma 2018-01-11 1684 struct bnxt_qplib_srq *qplib_srq = &srq->qplib_srq; 37cb11acf1f72a Devesh Sharma 2018-01-11 @1685 struct bnxt_qplib_nq *nq = NULL; 37cb11acf1f72a Devesh Sharma 2018-01-11 1686 37cb11acf1f72a Devesh Sharma 2018-01-11 1687 if (qplib_srq->cq) 37cb11acf1f72a Devesh Sharma 2018-01-11 1688 nq = qplib_srq->cq->nq; 68e326dea1dba9 Leon Romanovsky 2019-04-03 1689 bnxt_qplib_destroy_srq(&rdev->qplib_res, qplib_srq); 37cb11acf1f72a Devesh Sharma 2018-01-11 1690 ib_umem_release(srq->umem); 063975feedb143 Chandramohan Akula 2023-07-26 1691 atomic_dec(&rdev->stats.res.srq_count); 119181d1d4327d Leon Romanovsky 2020-09-07 1692 return 0; 37cb11acf1f72a Devesh Sharma 2018-01-11 1693 } 37cb11acf1f72a Devesh Sharma 2018-01-11 1694 :::::: The code at line 1685 was first introduced by commit :::::: 37cb11acf1f72a007a85894a6dd2ec93932bde46 RDMA/bnxt_re: Add SRQ support for Broadcom adapters :::::: TO: Devesh Sharma <devesh.sharma(a)broadcom.com> :::::: CC: Doug Ledford <dledford(a)redhat.com> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-5.10] iommu/arm-smmu-v3-sva: Fix mm use-after-free
by Zhang Yuwei 15 Dec '25

15 Dec '25

From: Jean-Philippe Brucker <jean-philippe(a)linaro.org> mainline inclusion from mainline-v5.19-rc1 commit cbd23144f7662b00bcde32a938c4a4057e476d68 category: bugfix bugzilla: 190104 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- We currently call arm64_mm_context_put() without holding a reference to the mm, which can result in use-after-free. Call mmgrab()/mmdrop() to ensure the mm only gets freed after we unpinned the ASID. Fixes: 32784a9562fb ("iommu/arm-smmu-v3: Implement iommu_sva_bind/unbind()") Signed-off-by: Jean-Philippe Brucker <jean-philippe(a)linaro.org> Tested-by: Zhangfei Gao <zhangfei.gao(a)linaro.org> Link: https://lore.kernel.org/r/20220426130444.300556-1-jean-philippe@linaro.org Signed-off-by: Will Deacon <will(a)kernel.org> Conflicts: drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c [commit 685ace6c824e merged for add trace event] Signed-off-by: Zhang Yuwei <zhangyuwei20(a)huawei.com> --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c index afdfd10290be..0040294ad62d 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c @@ -6,6 +6,7 @@ #include <linux/mm.h> #include <linux/mmu_context.h> #include <linux/mmu_notifier.h> +#include <linux/sched/mm.h> #include <linux/slab.h> #include <trace/events/smmu.h> @@ -98,9 +99,14 @@ static struct arm_smmu_ctx_desc *arm_smmu_alloc_shared_cd(struct mm_struct *mm) struct arm_smmu_ctx_desc *cd; struct arm_smmu_ctx_desc *ret = NULL; + /* Don't free the mm until we release the ASID */ + mmgrab(mm); + asid = arm64_mm_context_get(mm); - if (!asid) - return ERR_PTR(-ESRCH); + if (!asid) { + err = -ESRCH; + goto out_drop_mm; + } cd = kzalloc(sizeof(*cd), GFP_KERNEL); if (!cd) { @@ -169,6 +175,8 @@ static struct arm_smmu_ctx_desc *arm_smmu_alloc_shared_cd(struct mm_struct *mm) kfree(cd); out_put_context: arm64_mm_context_put(mm); +out_drop_mm: + mmdrop(mm); return err < 0 ? ERR_PTR(err) : ret; } @@ -177,6 +185,7 @@ static void arm_smmu_free_shared_cd(struct arm_smmu_ctx_desc *cd) if (arm_smmu_free_asid(cd)) { /* Unpin ASID */ arm64_mm_context_put(cd->mm); + mmdrop(cd->mm); kfree(cd); } } -- 2.43.0

2 1

[PATCH OLK-5.10] Bluetooth: bcsp: receive data only if registered
by Yin Tirui 15 Dec '25

15 Dec '25

From: Ivan Pravdin <ipravdin.official(a)gmail.com> stable inclusion from stable-v5.10.247 commit 164586725b47f9d61912e6bf17dbaffeff11710b category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDBAE0 CVE: CVE-2025-40308 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ca94b2b036c22556c3a66f1b80f490882deef7a6 ] Currently, bcsp_recv() can be called even when the BCSP protocol has not been registered. This leads to a NULL pointer dereference, as shown in the following stack trace: KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f] RIP: 0010:bcsp_recv+0x13d/0x1740 drivers/bluetooth/hci_bcsp.c:590 Call Trace: <TASK> hci_uart_tty_receive+0x194/0x220 drivers/bluetooth/hci_ldisc.c:627 tiocsti+0x23c/0x2c0 drivers/tty/tty_io.c:2290 tty_ioctl+0x626/0xde0 drivers/tty/tty_io.c:2706 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f To prevent this, ensure that the HCI_UART_REGISTERED flag is set before processing received data. If the protocol is not registered, return -EUNATCH. Reported-by: syzbot+4ed6852d4da4606c93da(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=4ed6852d4da4606c93da Tested-by: syzbot+4ed6852d4da4606c93da(a)syzkaller.appspotmail.com Signed-off-by: Ivan Pravdin <ipravdin.official(a)gmail.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Yin Tirui <yintirui(a)huawei.com> --- drivers/bluetooth/hci_bcsp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/bluetooth/hci_bcsp.c b/drivers/bluetooth/hci_bcsp.c index 8055f63603f4..8ff69111ceed 100644 --- a/drivers/bluetooth/hci_bcsp.c +++ b/drivers/bluetooth/hci_bcsp.c @@ -582,6 +582,9 @@ static int bcsp_recv(struct hci_uart *hu, const void *data, int count) struct bcsp_struct *bcsp = hu->priv; const unsigned char *ptr; + if (!test_bit(HCI_UART_REGISTERED, &hu->flags)) + return -EUNATCH; + BT_DBG("hu %p count %d rx_state %d rx_count %ld", hu, count, bcsp->rx_state, bcsp->rx_count); -- 2.43.0

2 1

[PATCH OLK-6.6] Bluetooth: bcsp: receive data only if registered
by Yin Tirui 15 Dec '25

15 Dec '25

From: Ivan Pravdin <ipravdin.official(a)gmail.com> stable inclusion from stable-v6.6.117 commit 799cd62cbcc3f12ee04b33ef390ff7d41c37d671 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDBAE0 CVE: CVE-2025-40308 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ca94b2b036c22556c3a66f1b80f490882deef7a6 ] Currently, bcsp_recv() can be called even when the BCSP protocol has not been registered. This leads to a NULL pointer dereference, as shown in the following stack trace: KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f] RIP: 0010:bcsp_recv+0x13d/0x1740 drivers/bluetooth/hci_bcsp.c:590 Call Trace: <TASK> hci_uart_tty_receive+0x194/0x220 drivers/bluetooth/hci_ldisc.c:627 tiocsti+0x23c/0x2c0 drivers/tty/tty_io.c:2290 tty_ioctl+0x626/0xde0 drivers/tty/tty_io.c:2706 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f To prevent this, ensure that the HCI_UART_REGISTERED flag is set before processing received data. If the protocol is not registered, return -EUNATCH. Reported-by: syzbot+4ed6852d4da4606c93da(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=4ed6852d4da4606c93da Tested-by: syzbot+4ed6852d4da4606c93da(a)syzkaller.appspotmail.com Signed-off-by: Ivan Pravdin <ipravdin.official(a)gmail.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Yin Tirui <yintirui(a)huawei.com> --- drivers/bluetooth/hci_bcsp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/bluetooth/hci_bcsp.c b/drivers/bluetooth/hci_bcsp.c index 2a5a27d713f8..e991d9e62486 100644 --- a/drivers/bluetooth/hci_bcsp.c +++ b/drivers/bluetooth/hci_bcsp.c @@ -582,6 +582,9 @@ static int bcsp_recv(struct hci_uart *hu, const void *data, int count) struct bcsp_struct *bcsp = hu->priv; const unsigned char *ptr; + if (!test_bit(HCI_UART_REGISTERED, &hu->flags)) + return -EUNATCH; + BT_DBG("hu %p count %d rx_state %d rx_count %ld", hu, count, bcsp->rx_state, bcsp->rx_count); -- 2.43.0

2 1

[openeuler:OLK-6.6 3542/3542] drivers/ata/libahci.c:210:5: warning: no previous prototype for function 'get_ahci_em_messages'
by kernel test robot 15 Dec '25

15 Dec '25

Hi leoliu-oc, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 81b22958142c03b02c766c79cd1554ebfa142be4 commit: fb43492008c11fe89e510dd63383a2d37ea3cf8e [3542/3542] ata: ahci: Add support for AHCI SGPIO Enclosure Management config: x86_64-buildonly-randconfig-002-20251215 (https://download.01.org/0day-ci/archive/20251215/202512151453.z27gHP7d-lkp@…) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512151453.z27gHP7d-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512151453.z27gHP7d-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from drivers/ata/libahci.c:24: In file included from include/linux/blkdev.h:9: In file included from include/linux/blk_types.h:10: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:8: In file included from include/linux/cacheflush.h:5: In file included from arch/x86/include/asm/cacheflush.h:5: In file included from include/linux/mm.h:2235: include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ >> drivers/ata/libahci.c:210:5: warning: no previous prototype for function 'get_ahci_em_messages' [-Wmissing-prototypes] 210 | int get_ahci_em_messages(void) | ^ drivers/ata/libahci.c:210:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 210 | int get_ahci_em_messages(void) | ^ | static 2 warnings generated. -- In file included from drivers/ata/ahci_zhaoxin_sgpio.c:10: In file included from include/linux/blkdev.h:9: In file included from include/linux/blk_types.h:10: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:8: In file included from include/linux/cacheflush.h:5: In file included from arch/x86/include/asm/cacheflush.h:5: In file included from include/linux/mm.h:2235: include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ >> drivers/ata/ahci_zhaoxin_sgpio.c:31:5: warning: no previous prototype for function 'ahci_wait_em_reset' [-Wmissing-prototypes] 31 | int ahci_wait_em_reset(struct sgpio_zhaoxin *sgpio_zhaoxin, u32 retry) | ^ drivers/ata/ahci_zhaoxin_sgpio.c:31:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 31 | int ahci_wait_em_reset(struct sgpio_zhaoxin *sgpio_zhaoxin, u32 retry) | ^ | static >> drivers/ata/ahci_zhaoxin_sgpio.c:55:6: warning: no previous prototype for function 'ahci_zhaoxin_set_em_sgpio' [-Wmissing-prototypes] 55 | void ahci_zhaoxin_set_em_sgpio(struct sgpio_zhaoxin *sgpio_zhaoxin) | ^ drivers/ata/ahci_zhaoxin_sgpio.c:55:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 55 | void ahci_zhaoxin_set_em_sgpio(struct sgpio_zhaoxin *sgpio_zhaoxin) | ^ | static >> drivers/ata/ahci_zhaoxin_sgpio.c:99:6: warning: no previous prototype for function 'ahci_zhaoxin_set_em_sgpio_gpmode' [-Wmissing-prototypes] 99 | void ahci_zhaoxin_set_em_sgpio_gpmode(struct sgpio_zhaoxin *sgpio_zhaoxin) | ^ drivers/ata/ahci_zhaoxin_sgpio.c:99:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 99 | void ahci_zhaoxin_set_em_sgpio_gpmode(struct sgpio_zhaoxin *sgpio_zhaoxin) | ^ | static >> drivers/ata/ahci_zhaoxin_sgpio.c:601:6: warning: no previous prototype for function 'set_em_messages' [-Wmissing-prototypes] 601 | void set_em_messages(struct sgpio_zhaoxin *sgpio_zhaoxin) | ^ drivers/ata/ahci_zhaoxin_sgpio.c:601:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 601 | void set_em_messages(struct sgpio_zhaoxin *sgpio_zhaoxin) | ^ | static >> drivers/ata/ahci_zhaoxin_sgpio.c:621:5: warning: no previous prototype for function 'add_sgpio_zhaoxin' [-Wmissing-prototypes] 621 | int add_sgpio_zhaoxin(void) | ^ drivers/ata/ahci_zhaoxin_sgpio.c:621:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 621 | int add_sgpio_zhaoxin(void) | ^ | static drivers/ata/ahci_zhaoxin_sgpio.c:673:6: warning: no previous prototype for function 'remove_sgpio_zhaoxin' [-Wmissing-prototypes] 673 | void remove_sgpio_zhaoxin(void) | ^ drivers/ata/ahci_zhaoxin_sgpio.c:673:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 673 | void remove_sgpio_zhaoxin(void) | ^ | static 7 warnings generated. vim +/get_ahci_em_messages +210 drivers/ata/libahci.c 209 > 210 int get_ahci_em_messages(void) 211 { 212 return ahci_em_messages; 213 } 214 EXPORT_SYMBOL_GPL(get_ahci_em_messages); 215 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:OLK-6.6 3542/3542] arch/x86/kvm/svm/csv.c:1196: warning: Function parameter or member 'kvm' not described in 'csv3_launch_encrypt_data_alt_1'
by kernel test robot 15 Dec '25

15 Dec '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 81b22958142c03b02c766c79cd1554ebfa142be4 commit: ee5362bc5977e41a88aee1c46a6580295baa0285 [3542/3542] KVM: SVM: CSV: Support issue non-4K aligned CSV3_CMD_LAUNCH_ENCRYPT_DATA and more than once config: x86_64-randconfig-016-20251215 (https://download.01.org/0day-ci/archive/20251215/202512151455.kuVXZCXz-lkp@…) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512151455.kuVXZCXz-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512151455.kuVXZCXz-lkp@intel.com/ All warnings (new ones prefixed by >>): >> arch/x86/kvm/svm/csv.c:1196: warning: Function parameter or member 'kvm' not described in 'csv3_launch_encrypt_data_alt_1' >> arch/x86/kvm/svm/csv.c:1196: warning: Function parameter or member 'argp' not described in 'csv3_launch_encrypt_data_alt_1' >> arch/x86/kvm/svm/csv.c:1319: warning: Function parameter or member 'kvm' not described in '__csv3_launch_encrypt_data' >> arch/x86/kvm/svm/csv.c:1319: warning: Function parameter or member 'argp' not described in '__csv3_launch_encrypt_data' >> arch/x86/kvm/svm/csv.c:1319: warning: Function parameter or member 'params' not described in '__csv3_launch_encrypt_data' >> arch/x86/kvm/svm/csv.c:1319: warning: Function parameter or member 'src_buf' not described in '__csv3_launch_encrypt_data' >> arch/x86/kvm/svm/csv.c:1319: warning: Function parameter or member 'start_pgoff' not described in '__csv3_launch_encrypt_data' >> arch/x86/kvm/svm/csv.c:1319: warning: Function parameter or member 'end_pgoff' not described in '__csv3_launch_encrypt_data' >> arch/x86/kvm/svm/csv.c:1436: warning: Function parameter or member 'kvm' not described in 'csv3_launch_encrypt_data_alt_2' >> arch/x86/kvm/svm/csv.c:1436: warning: Function parameter or member 'argp' not described in 'csv3_launch_encrypt_data_alt_2' arch/x86/kvm/svm/csv.c:2305: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Return negative error code on fail, arch/x86/kvm/svm/csv.c:2936: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * When userspace recognizes these extensions, it is suggested that the userspace arch/x86/kvm/svm/csv.c:2986: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Return 0 means KVM accept the negotiation from userspace. Both the vim +1196 arch/x86/kvm/svm/csv.c e23a88d66dd209 Xin Jiang 2023-08-10 1189 ee5362bc5977e4 hanliyang 2024-09-27 1190 /** ee5362bc5977e4 hanliyang 2024-09-27 1191 * csv3_launch_encrypt_data_alt_1 - The legacy handler to encrypt CSV3 ee5362bc5977e4 hanliyang 2024-09-27 1192 * guest's memory before VMRUN. ee5362bc5977e4 hanliyang 2024-09-27 1193 */ ee5362bc5977e4 hanliyang 2024-09-27 1194 static int csv3_launch_encrypt_data_alt_1(struct kvm *kvm, ee5362bc5977e4 hanliyang 2024-09-27 1195 struct kvm_sev_cmd *argp) e23a88d66dd209 Xin Jiang 2023-08-10 @1196 { e23a88d66dd209 Xin Jiang 2023-08-10 1197 struct kvm_csv_info *csv = &to_kvm_svm_csv(kvm)->csv_info; e23a88d66dd209 Xin Jiang 2023-08-10 1198 struct kvm_csv3_launch_encrypt_data params; e23a88d66dd209 Xin Jiang 2023-08-10 1199 struct csv3_data_launch_encrypt_data *encrypt_data = NULL; e23a88d66dd209 Xin Jiang 2023-08-10 1200 struct encrypt_data_block *blocks = NULL; e23a88d66dd209 Xin Jiang 2023-08-10 1201 u8 *data = NULL; e23a88d66dd209 Xin Jiang 2023-08-10 1202 u32 offset; e23a88d66dd209 Xin Jiang 2023-08-10 1203 u32 num_entries, num_entries_in_block; e23a88d66dd209 Xin Jiang 2023-08-10 1204 u32 num_blocks, num_blocks_max; e23a88d66dd209 Xin Jiang 2023-08-10 1205 u32 i, n; e23a88d66dd209 Xin Jiang 2023-08-10 1206 unsigned long pfn, pfn_sme_mask; e23a88d66dd209 Xin Jiang 2023-08-10 1207 int ret = 0; e23a88d66dd209 Xin Jiang 2023-08-10 1208 e23a88d66dd209 Xin Jiang 2023-08-10 1209 if (copy_from_user(&params, (void __user *)(uintptr_t)argp->data, e23a88d66dd209 Xin Jiang 2023-08-10 1210 sizeof(params))) { e23a88d66dd209 Xin Jiang 2023-08-10 1211 ret = -EFAULT; e23a88d66dd209 Xin Jiang 2023-08-10 1212 goto exit; e23a88d66dd209 Xin Jiang 2023-08-10 1213 } e23a88d66dd209 Xin Jiang 2023-08-10 1214 e23a88d66dd209 Xin Jiang 2023-08-10 1215 if ((params.len & ~PAGE_MASK) || !params.len || !params.uaddr) { e23a88d66dd209 Xin Jiang 2023-08-10 1216 ret = -EINVAL; e23a88d66dd209 Xin Jiang 2023-08-10 1217 goto exit; e23a88d66dd209 Xin Jiang 2023-08-10 1218 } e23a88d66dd209 Xin Jiang 2023-08-10 1219 e57b75759a2c62 hanliyang 2024-09-26 1220 /* e57b75759a2c62 hanliyang 2024-09-26 1221 * If userspace request to invoke CSV3_CMD_SET_GUEST_PRIVATE_MEMORY e57b75759a2c62 hanliyang 2024-09-26 1222 * explicitly, we should not calls to csv3_set_guest_private_memory() e57b75759a2c62 hanliyang 2024-09-26 1223 * here. e57b75759a2c62 hanliyang 2024-09-26 1224 */ e57b75759a2c62 hanliyang 2024-09-26 1225 if (!(csv->inuse_ext & KVM_CAP_HYGON_COCO_EXT_CSV3_SET_PRIV_MEM)) { e23a88d66dd209 Xin Jiang 2023-08-10 1226 /* Allocate all the guest memory from CMA */ e57b75759a2c62 hanliyang 2024-09-26 1227 ret = csv3_set_guest_private_memory(kvm, argp); e23a88d66dd209 Xin Jiang 2023-08-10 1228 if (ret) e23a88d66dd209 Xin Jiang 2023-08-10 1229 goto exit; e57b75759a2c62 hanliyang 2024-09-26 1230 } e23a88d66dd209 Xin Jiang 2023-08-10 1231 e23a88d66dd209 Xin Jiang 2023-08-10 1232 num_entries = params.len / PAGE_SIZE; e23a88d66dd209 Xin Jiang 2023-08-10 1233 num_entries_in_block = ARRAY_SIZE(blocks->entry); e23a88d66dd209 Xin Jiang 2023-08-10 1234 num_blocks = (num_entries + num_entries_in_block - 1) / num_entries_in_block; e23a88d66dd209 Xin Jiang 2023-08-10 1235 num_blocks_max = ARRAY_SIZE(encrypt_data->data_blocks); e23a88d66dd209 Xin Jiang 2023-08-10 1236 e23a88d66dd209 Xin Jiang 2023-08-10 1237 if (num_blocks >= num_blocks_max) { e23a88d66dd209 Xin Jiang 2023-08-10 1238 ret = -EINVAL; e23a88d66dd209 Xin Jiang 2023-08-10 1239 goto exit; e23a88d66dd209 Xin Jiang 2023-08-10 1240 } e23a88d66dd209 Xin Jiang 2023-08-10 1241 e23a88d66dd209 Xin Jiang 2023-08-10 1242 data = vzalloc(params.len); e23a88d66dd209 Xin Jiang 2023-08-10 1243 if (!data) { e23a88d66dd209 Xin Jiang 2023-08-10 1244 ret = -ENOMEM; e23a88d66dd209 Xin Jiang 2023-08-10 1245 goto exit; e23a88d66dd209 Xin Jiang 2023-08-10 1246 } e23a88d66dd209 Xin Jiang 2023-08-10 1247 if (copy_from_user(data, (void __user *)params.uaddr, params.len)) { e23a88d66dd209 Xin Jiang 2023-08-10 1248 ret = -EFAULT; e23a88d66dd209 Xin Jiang 2023-08-10 1249 goto data_free; e23a88d66dd209 Xin Jiang 2023-08-10 1250 } e23a88d66dd209 Xin Jiang 2023-08-10 1251 e23a88d66dd209 Xin Jiang 2023-08-10 1252 blocks = vzalloc(num_blocks * sizeof(*blocks)); e23a88d66dd209 Xin Jiang 2023-08-10 1253 if (!blocks) { e23a88d66dd209 Xin Jiang 2023-08-10 1254 ret = -ENOMEM; e23a88d66dd209 Xin Jiang 2023-08-10 1255 goto data_free; e23a88d66dd209 Xin Jiang 2023-08-10 1256 } e23a88d66dd209 Xin Jiang 2023-08-10 1257 e23a88d66dd209 Xin Jiang 2023-08-10 1258 for (offset = 0, i = 0, n = 0; offset < params.len; offset += PAGE_SIZE) { e23a88d66dd209 Xin Jiang 2023-08-10 1259 pfn = vmalloc_to_pfn(offset + data); e23a88d66dd209 Xin Jiang 2023-08-10 1260 pfn_sme_mask = __sme_set(pfn << PAGE_SHIFT) >> PAGE_SHIFT; e23a88d66dd209 Xin Jiang 2023-08-10 1261 if (offset && ((blocks[n].entry[i].pfn + 1) == pfn_sme_mask)) e23a88d66dd209 Xin Jiang 2023-08-10 1262 blocks[n].entry[i].npages += 1; e23a88d66dd209 Xin Jiang 2023-08-10 1263 else { e23a88d66dd209 Xin Jiang 2023-08-10 1264 if (offset) { e23a88d66dd209 Xin Jiang 2023-08-10 1265 i = (i + 1) % num_entries_in_block; e23a88d66dd209 Xin Jiang 2023-08-10 1266 n = (i == 0) ? (n + 1) : n; e23a88d66dd209 Xin Jiang 2023-08-10 1267 } e23a88d66dd209 Xin Jiang 2023-08-10 1268 blocks[n].entry[i].pfn = pfn_sme_mask; e23a88d66dd209 Xin Jiang 2023-08-10 1269 blocks[n].entry[i].npages = 1; e23a88d66dd209 Xin Jiang 2023-08-10 1270 } e23a88d66dd209 Xin Jiang 2023-08-10 1271 } e23a88d66dd209 Xin Jiang 2023-08-10 1272 e23a88d66dd209 Xin Jiang 2023-08-10 1273 encrypt_data = kzalloc(sizeof(*encrypt_data), GFP_KERNEL); e23a88d66dd209 Xin Jiang 2023-08-10 1274 if (!encrypt_data) { e23a88d66dd209 Xin Jiang 2023-08-10 1275 ret = -ENOMEM; e23a88d66dd209 Xin Jiang 2023-08-10 1276 goto block_free; e23a88d66dd209 Xin Jiang 2023-08-10 1277 } e23a88d66dd209 Xin Jiang 2023-08-10 1278 e23a88d66dd209 Xin Jiang 2023-08-10 1279 encrypt_data->handle = csv->sev->handle; e23a88d66dd209 Xin Jiang 2023-08-10 1280 encrypt_data->length = params.len; e23a88d66dd209 Xin Jiang 2023-08-10 1281 encrypt_data->gpa = params.gpa; e23a88d66dd209 Xin Jiang 2023-08-10 1282 for (i = 0; i <= n; i++) { e23a88d66dd209 Xin Jiang 2023-08-10 1283 encrypt_data->data_blocks[i] = e23a88d66dd209 Xin Jiang 2023-08-10 1284 __sme_set(vmalloc_to_pfn((void *)blocks + i * sizeof(*blocks)) << PAGE_SHIFT); e23a88d66dd209 Xin Jiang 2023-08-10 1285 } e23a88d66dd209 Xin Jiang 2023-08-10 1286 e23a88d66dd209 Xin Jiang 2023-08-10 1287 clflush_cache_range(data, params.len); e23a88d66dd209 Xin Jiang 2023-08-10 1288 ret = hygon_kvm_hooks.sev_issue_cmd(kvm, CSV3_CMD_LAUNCH_ENCRYPT_DATA, e23a88d66dd209 Xin Jiang 2023-08-10 1289 encrypt_data, &argp->error); e23a88d66dd209 Xin Jiang 2023-08-10 1290 e23a88d66dd209 Xin Jiang 2023-08-10 1291 kfree(encrypt_data); e23a88d66dd209 Xin Jiang 2023-08-10 1292 block_free: e23a88d66dd209 Xin Jiang 2023-08-10 1293 vfree(blocks); e23a88d66dd209 Xin Jiang 2023-08-10 1294 data_free: e23a88d66dd209 Xin Jiang 2023-08-10 1295 vfree(data); e23a88d66dd209 Xin Jiang 2023-08-10 1296 exit: e23a88d66dd209 Xin Jiang 2023-08-10 1297 return ret; e23a88d66dd209 Xin Jiang 2023-08-10 1298 } e23a88d66dd209 Xin Jiang 2023-08-10 1299 ee5362bc5977e4 hanliyang 2024-09-27 1300 #define MAX_ENTRIES_PER_BLOCK \ ee5362bc5977e4 hanliyang 2024-09-27 1301 (sizeof(((struct encrypt_data_block *)0)->entry) / \ ee5362bc5977e4 hanliyang 2024-09-27 1302 sizeof(((struct encrypt_data_block *)0)->entry[0])) ee5362bc5977e4 hanliyang 2024-09-27 1303 #define MAX_BLOCKS_PER_CSV3_LUP_DATA \ ee5362bc5977e4 hanliyang 2024-09-27 1304 (sizeof(((struct csv3_data_launch_encrypt_data *)0)->data_blocks) / \ ee5362bc5977e4 hanliyang 2024-09-27 1305 sizeof(((struct csv3_data_launch_encrypt_data *)0)->data_blocks[0])) ee5362bc5977e4 hanliyang 2024-09-27 1306 #define MAX_ENTRIES_PER_CSV3_LUP_DATA \ ee5362bc5977e4 hanliyang 2024-09-27 1307 (MAX_BLOCKS_PER_CSV3_LUP_DATA * MAX_ENTRIES_PER_BLOCK) ee5362bc5977e4 hanliyang 2024-09-27 1308 ee5362bc5977e4 hanliyang 2024-09-27 1309 /** ee5362bc5977e4 hanliyang 2024-09-27 1310 * __csv3_launch_encrypt_data - The helper for handler ee5362bc5977e4 hanliyang 2024-09-27 1311 * csv3_launch_encrypt_data_alt_2. ee5362bc5977e4 hanliyang 2024-09-27 1312 */ ee5362bc5977e4 hanliyang 2024-09-27 1313 static int __csv3_launch_encrypt_data(struct kvm *kvm, ee5362bc5977e4 hanliyang 2024-09-27 1314 struct kvm_sev_cmd *argp, ee5362bc5977e4 hanliyang 2024-09-27 1315 struct kvm_csv3_launch_encrypt_data *params, ee5362bc5977e4 hanliyang 2024-09-27 1316 void *src_buf, ee5362bc5977e4 hanliyang 2024-09-27 1317 unsigned int start_pgoff, ee5362bc5977e4 hanliyang 2024-09-27 1318 unsigned int end_pgoff) ee5362bc5977e4 hanliyang 2024-09-27 @1319 { ee5362bc5977e4 hanliyang 2024-09-27 1320 struct kvm_csv_info *csv = &to_kvm_svm_csv(kvm)->csv_info; ee5362bc5977e4 hanliyang 2024-09-27 1321 struct csv3_data_launch_encrypt_data *data = NULL; ee5362bc5977e4 hanliyang 2024-09-27 1322 struct encrypt_data_block *block = NULL; ee5362bc5977e4 hanliyang 2024-09-27 1323 struct page **pages = NULL; ee5362bc5977e4 hanliyang 2024-09-27 1324 unsigned long len, remain_len; ee5362bc5977e4 hanliyang 2024-09-27 1325 unsigned long pfn, pfn_sme_mask, last_pfn; ee5362bc5977e4 hanliyang 2024-09-27 1326 unsigned int pgoff = start_pgoff; ee5362bc5977e4 hanliyang 2024-09-27 1327 int i, j; ee5362bc5977e4 hanliyang 2024-09-27 1328 int ret = -ENOMEM; ee5362bc5977e4 hanliyang 2024-09-27 1329 ee5362bc5977e4 hanliyang 2024-09-27 1330 /* Alloc command buffer for CSV3_CMD_LAUNCH_ENCRYPT_DATA command */ ee5362bc5977e4 hanliyang 2024-09-27 1331 data = kzalloc(sizeof(*data), GFP_KERNEL_ACCOUNT); ee5362bc5977e4 hanliyang 2024-09-27 1332 if (!data) ee5362bc5977e4 hanliyang 2024-09-27 1333 return -ENOMEM; ee5362bc5977e4 hanliyang 2024-09-27 1334 ee5362bc5977e4 hanliyang 2024-09-27 1335 /* Alloc pages for data_blocks[] in the command buffer */ ee5362bc5977e4 hanliyang 2024-09-27 1336 len = ARRAY_SIZE(data->data_blocks) * sizeof(struct page *); ee5362bc5977e4 hanliyang 2024-09-27 1337 pages = kzalloc(len, GFP_KERNEL_ACCOUNT); ee5362bc5977e4 hanliyang 2024-09-27 1338 if (!pages) ee5362bc5977e4 hanliyang 2024-09-27 1339 goto e_free_data; ee5362bc5977e4 hanliyang 2024-09-27 1340 ee5362bc5977e4 hanliyang 2024-09-27 1341 for (i = 0; i < ARRAY_SIZE(data->data_blocks); i++) { ee5362bc5977e4 hanliyang 2024-09-27 1342 pages[i] = alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO); ee5362bc5977e4 hanliyang 2024-09-27 1343 if (!pages[i]) ee5362bc5977e4 hanliyang 2024-09-27 1344 goto e_free_pages; ee5362bc5977e4 hanliyang 2024-09-27 1345 } ee5362bc5977e4 hanliyang 2024-09-27 1346 ee5362bc5977e4 hanliyang 2024-09-27 1347 i = 0; ee5362bc5977e4 hanliyang 2024-09-27 1348 while (i < ARRAY_SIZE(data->data_blocks) && pgoff < end_pgoff) { ee5362bc5977e4 hanliyang 2024-09-27 1349 block = (struct encrypt_data_block *)page_to_virt(pages[i]); ee5362bc5977e4 hanliyang 2024-09-27 1350 ee5362bc5977e4 hanliyang 2024-09-27 1351 j = 0; ee5362bc5977e4 hanliyang 2024-09-27 1352 last_pfn = 0; ee5362bc5977e4 hanliyang 2024-09-27 1353 while (j < ARRAY_SIZE(block->entry) && pgoff < end_pgoff) { ee5362bc5977e4 hanliyang 2024-09-27 1354 pfn = vmalloc_to_pfn(src_buf + (pgoff << PAGE_SHIFT)); ee5362bc5977e4 hanliyang 2024-09-27 1355 pfn_sme_mask = __sme_set(pfn << PAGE_SHIFT) >> PAGE_SHIFT; ee5362bc5977e4 hanliyang 2024-09-27 1356 ee5362bc5977e4 hanliyang 2024-09-27 1357 /* ee5362bc5977e4 hanliyang 2024-09-27 1358 * One entry can record a number of contiguous physical ee5362bc5977e4 hanliyang 2024-09-27 1359 * pages. If the current page is not adjacent to the ee5362bc5977e4 hanliyang 2024-09-27 1360 * previous physical page, we should record the page to ee5362bc5977e4 hanliyang 2024-09-27 1361 * the next entry. If entries of current block is used ee5362bc5977e4 hanliyang 2024-09-27 1362 * up, we should try the next block. ee5362bc5977e4 hanliyang 2024-09-27 1363 */ ee5362bc5977e4 hanliyang 2024-09-27 1364 if (last_pfn && (last_pfn + 1 == pfn)) { ee5362bc5977e4 hanliyang 2024-09-27 1365 block->entry[j].npages++; ee5362bc5977e4 hanliyang 2024-09-27 1366 } else if (j < (ARRAY_SIZE(block->entry) - 1)) { ee5362bc5977e4 hanliyang 2024-09-27 1367 /* @last_pfn == 0 means fill in entry[0] */ ee5362bc5977e4 hanliyang 2024-09-27 1368 if (likely(last_pfn != 0)) ee5362bc5977e4 hanliyang 2024-09-27 1369 j++; ee5362bc5977e4 hanliyang 2024-09-27 1370 block->entry[j].pfn = pfn_sme_mask; ee5362bc5977e4 hanliyang 2024-09-27 1371 block->entry[j].npages = 1; ee5362bc5977e4 hanliyang 2024-09-27 1372 } else { ee5362bc5977e4 hanliyang 2024-09-27 1373 break; ee5362bc5977e4 hanliyang 2024-09-27 1374 } ee5362bc5977e4 hanliyang 2024-09-27 1375 ee5362bc5977e4 hanliyang 2024-09-27 1376 /* ee5362bc5977e4 hanliyang 2024-09-27 1377 * Succeed to record one page, increase the page offset. ee5362bc5977e4 hanliyang 2024-09-27 1378 * We also record the pfn of current page so that we can ee5362bc5977e4 hanliyang 2024-09-27 1379 * record the contiguous physical pages into one entry. ee5362bc5977e4 hanliyang 2024-09-27 1380 */ ee5362bc5977e4 hanliyang 2024-09-27 1381 last_pfn = pfn; ee5362bc5977e4 hanliyang 2024-09-27 1382 pgoff++; ee5362bc5977e4 hanliyang 2024-09-27 1383 } ee5362bc5977e4 hanliyang 2024-09-27 1384 ee5362bc5977e4 hanliyang 2024-09-27 1385 i++; ee5362bc5977e4 hanliyang 2024-09-27 1386 } ee5362bc5977e4 hanliyang 2024-09-27 1387 ee5362bc5977e4 hanliyang 2024-09-27 1388 if (pgoff < end_pgoff) { ee5362bc5977e4 hanliyang 2024-09-27 1389 pr_err("CSV3: Fail to fill in LAUNCH_ENCRYPT_DATA command!\n"); ee5362bc5977e4 hanliyang 2024-09-27 1390 goto e_free_pages; ee5362bc5977e4 hanliyang 2024-09-27 1391 } ee5362bc5977e4 hanliyang 2024-09-27 1392 ee5362bc5977e4 hanliyang 2024-09-27 1393 len = (end_pgoff - start_pgoff) << PAGE_SHIFT; ee5362bc5977e4 hanliyang 2024-09-27 1394 clflush_cache_range(src_buf + (start_pgoff << PAGE_SHIFT), len); ee5362bc5977e4 hanliyang 2024-09-27 1395 ee5362bc5977e4 hanliyang 2024-09-27 1396 /* Fill in command buffer */ ee5362bc5977e4 hanliyang 2024-09-27 1397 data->handle = csv->sev->handle; ee5362bc5977e4 hanliyang 2024-09-27 1398 ee5362bc5977e4 hanliyang 2024-09-27 1399 if (start_pgoff == 0) { ee5362bc5977e4 hanliyang 2024-09-27 1400 data->gpa = params->gpa; ee5362bc5977e4 hanliyang 2024-09-27 1401 len -= params->gpa & ~PAGE_MASK; ee5362bc5977e4 hanliyang 2024-09-27 1402 } else { ee5362bc5977e4 hanliyang 2024-09-27 1403 data->gpa = (params->gpa & PAGE_MASK) + (start_pgoff << PAGE_SHIFT); ee5362bc5977e4 hanliyang 2024-09-27 1404 } ee5362bc5977e4 hanliyang 2024-09-27 1405 remain_len = params->len - (data->gpa - params->gpa); ee5362bc5977e4 hanliyang 2024-09-27 1406 ee5362bc5977e4 hanliyang 2024-09-27 1407 data->length = (len <= remain_len) ? len : remain_len; ee5362bc5977e4 hanliyang 2024-09-27 1408 ee5362bc5977e4 hanliyang 2024-09-27 1409 for (j = 0; j < i; j++) ee5362bc5977e4 hanliyang 2024-09-27 1410 data->data_blocks[j] = __sme_set(page_to_phys(pages[j])); ee5362bc5977e4 hanliyang 2024-09-27 1411 ee5362bc5977e4 hanliyang 2024-09-27 1412 /* Issue command */ ee5362bc5977e4 hanliyang 2024-09-27 1413 ret = hygon_kvm_hooks.sev_issue_cmd(kvm, CSV3_CMD_LAUNCH_ENCRYPT_DATA, ee5362bc5977e4 hanliyang 2024-09-27 1414 data, &argp->error); ee5362bc5977e4 hanliyang 2024-09-27 1415 ee5362bc5977e4 hanliyang 2024-09-27 1416 e_free_pages: ee5362bc5977e4 hanliyang 2024-09-27 1417 for (i = 0; i < ARRAY_SIZE(data->data_blocks); i++) { ee5362bc5977e4 hanliyang 2024-09-27 1418 if (pages[i]) ee5362bc5977e4 hanliyang 2024-09-27 1419 __free_page(pages[i]); ee5362bc5977e4 hanliyang 2024-09-27 1420 } ee5362bc5977e4 hanliyang 2024-09-27 1421 kfree(pages); ee5362bc5977e4 hanliyang 2024-09-27 1422 e_free_data: ee5362bc5977e4 hanliyang 2024-09-27 1423 kfree(data); ee5362bc5977e4 hanliyang 2024-09-27 1424 ee5362bc5977e4 hanliyang 2024-09-27 1425 return ret; ee5362bc5977e4 hanliyang 2024-09-27 1426 } ee5362bc5977e4 hanliyang 2024-09-27 1427 :::::: The code at line 1196 was first introduced by commit :::::: e23a88d66dd209d8c87df6b19e15ea8ddd9b7915 KVM: SVM: CSV: Add KVM_CSV3_LAUNCH_ENCRYPT_DATA command :::::: TO: Xin Jiang <jiangxin(a)hygon.cn> :::::: CC: hanliyang <hanliyang(a)hygon.cn> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3542/3542] drivers/crypto/ccp/hygon/tdm-kernel-guard.c:151:5: warning: no previous prototype for function 'tdm_service_run'
by kernel test robot 15 Dec '25

15 Dec '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 81b22958142c03b02c766c79cd1554ebfa142be4 commit: 3ad98583441f7c8a2553e1e8d6340ed4397033e2 [3542/3542] crypto: tdm: Support dynamic protection for SCT and IDT by HYGON TDM config: x86_64-randconfig-012-20251215 (https://download.01.org/0day-ci/archive/20251215/202512151453.5SnEFp7c-lkp@…) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512151453.5SnEFp7c-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512151453.5SnEFp7c-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from drivers/crypto/ccp/hygon/tdm-kernel-guard.c:15: In file included from include/linux/kallsyms.h:13: In file included from include/linux/mm.h:2242: include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ >> drivers/crypto/ccp/hygon/tdm-kernel-guard.c:151:5: warning: no previous prototype for function 'tdm_service_run' [-Wmissing-prototypes] 151 | int tdm_service_run(struct tdm_security_enhance *data) | ^ drivers/crypto/ccp/hygon/tdm-kernel-guard.c:151:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 151 | int tdm_service_run(struct tdm_security_enhance *data) | ^ | static >> drivers/crypto/ccp/hygon/tdm-kernel-guard.c:212:5: warning: no previous prototype for function 'tdm_service_exit' [-Wmissing-prototypes] 212 | int tdm_service_exit(struct tdm_security_enhance *data) | ^ drivers/crypto/ccp/hygon/tdm-kernel-guard.c:212:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 212 | int tdm_service_exit(struct tdm_security_enhance *data) | ^ | static drivers/crypto/ccp/hygon/tdm-kernel-guard.c:308:23: error: use of undeclared identifier 'NR_syscalls' 308 | eh_objs[SCT].size = NR_syscalls * sizeof(char *); | ^ 3 warnings and 1 error generated. vim +/tdm_service_run +151 drivers/crypto/ccp/hygon/tdm-kernel-guard.c 150 > 151 int tdm_service_run(struct tdm_security_enhance *data) 152 { 153 int ret = 0; 154 struct addr_range_info *addr_range = NULL; 155 156 // Allocate memory for addr_range 157 addr_range = kzalloc(sizeof(struct addr_range_info) + sizeof(struct addr_info), GFP_KERNEL); 158 if (!addr_range) { 159 ret = -DYN_ERR_MEM; 160 pr_err("addr_range kzalloc memory failed\n"); 161 goto end; 162 } 163 164 // Fill in addr_range 165 addr_range->count = 1; 166 addr_range->addr[0].addr_start = data->vaddr; 167 addr_range->addr[0].length = data->size; 168 data->mem_range = addr_range; 169 170 // Context configuration 171 data->context |= TASK_CREATE_VADDR; 172 173 // Allocate memory for authcode 174 data->authcode = kzalloc(sizeof(struct authcode_2b) + AUTHCODE_MAX, GFP_KERNEL); 175 if (!data->authcode) { 176 ret = -DYN_ERR_MEM; 177 pr_err("authcode_2b kzalloc memory failed\n"); 178 goto free_addr_range_info; 179 } 180 181 data->authcode->len = AUTHCODE_MAX; 182 183 // Measurement data configuration 184 data->mdata.hash_algo = HASH_ALGO_SM3; 185 data->mdata.period_ms = 0; 186 ret = calc_expected_hash((uint8_t *)data->vaddr, data->size, 187 data->mdata.expected_measurement); 188 if (ret) { 189 pr_err("calculate expected hash failed!\n"); 190 goto free_authcode; 191 } 192 193 // Create and start tdm task 194 ret = tdm_task_create_and_run(data); 195 if (ret) { 196 pr_err("tdm_task_create_and_run failed!\n"); 197 goto free_authcode; 198 } 199 200 return ret; 201 202 free_authcode: 203 kfree(data->authcode); 204 data->authcode = NULL; 205 free_addr_range_info: 206 kfree(data->mem_range); 207 data->mem_range = NULL; 208 end: 209 return ret; 210 } 211 > 212 int tdm_service_exit(struct tdm_security_enhance *data) 213 { 214 int ret = 0; 215 int task_status = 0; 216 217 task_status = psp_startstop_measure_task(data->task_id, data->authcode, false); 218 if (task_status < 0) { 219 ret = task_status; 220 pr_err("task_id %d stop failed with 0x%x\n", data->task_id, ret); 221 goto end; 222 } 223 224 // Waiting for the task to end 225 msleep(40); 226 227 psp_destroy_measure_task(data->task_id, data->authcode); 228 229 kfree(data->authcode); 230 data->authcode = NULL; 231 kfree(data->mem_range); 232 data->mem_range = NULL; 233 end: 234 return ret; 235 } 236 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3542/3542] drivers/net/ethernet/huawei/hinic/hinic_mbox.c:373: warning: expecting prototype for hinic_unregister_ppf_mbox_cb(). Prototype was for hinic_unregister_pf_mbox_cb() instead
by kernel test robot 15 Dec '25

15 Dec '25

Hi Zhou, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 81b22958142c03b02c766c79cd1554ebfa142be4 commit: 9c1c9598010fbb9daa1e2a67d23830092fb6246a [3542/3542] net/hinic: Update Huawei Intelligent Network Card Driver: hinic config: x86_64-buildonly-randconfig-005-20251215 (https://download.01.org/0day-ci/archive/20251215/202512151406.uDEczUki-lkp@…) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512151406.uDEczUki-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512151406.uDEczUki-lkp@intel.com/ All error/warnings (new ones prefixed by >>): In file included from drivers/net/ethernet/huawei/hinic/hinic_main.c:18: In file included from include/linux/pci.h:1663: In file included from include/linux/dmapool.h:14: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:2193: include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ drivers/net/ethernet/huawei/hinic/hinic_main.c:204:9: error: call to undeclared function 'vlan_dev_priv'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 204 | ret = vlan_dev_priv(ndev)->real_dev; | ^ >> drivers/net/ethernet/huawei/hinic/hinic_main.c:204:30: error: member reference type 'int' is not a pointer 204 | ret = vlan_dev_priv(ndev)->real_dev; | ~~~~~~~~~~~~~~~~~~~ ^ drivers/net/ethernet/huawei/hinic/hinic_main.c:206:30: error: member reference type 'int' is not a pointer 206 | ret = vlan_dev_priv(ret)->real_dev; | ~~~~~~~~~~~~~~~~~~ ^ drivers/net/ethernet/huawei/hinic/hinic_main.c:182:5: warning: no previous prototype for function 'hinic_netdev_event' [-Wmissing-prototypes] 182 | int hinic_netdev_event(struct notifier_block *notifier, | ^ drivers/net/ethernet/huawei/hinic/hinic_main.c:182:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 182 | int hinic_netdev_event(struct notifier_block *notifier, | ^ | static drivers/net/ethernet/huawei/hinic/hinic_main.c:3058:6: warning: no previous prototype for function 'nic_event' [-Wmissing-prototypes] 3058 | void nic_event(struct hinic_lld_dev *lld_dev, void *adapter, | ^ drivers/net/ethernet/huawei/hinic/hinic_main.c:3058:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 3058 | void nic_event(struct hinic_lld_dev *lld_dev, void *adapter, | ^ | static 3 warnings and 3 errors generated. -- drivers/net/ethernet/huawei/hinic/hinic_eqs.c:321: warning: Function parameter or member 'hwe_cb' not described in 'hinic_aeq_register_hw_cb' drivers/net/ethernet/huawei/hinic/hinic_eqs.c:321: warning: Excess function parameter 'hw_cb' description in 'hinic_aeq_register_hw_cb' drivers/net/ethernet/huawei/hinic/hinic_eqs.c:369: warning: Function parameter or member 'aeq_swe_cb' not described in 'hinic_aeq_register_swe_cb' drivers/net/ethernet/huawei/hinic/hinic_eqs.c:369: warning: expecting prototype for hinic_aeq_register_sw_cb(). Prototype was for hinic_aeq_register_swe_cb() instead >> drivers/net/ethernet/huawei/hinic/hinic_eqs.c:391: warning: expecting prototype for hinic_aeq_unregister_sw_cb(). Prototype was for hinic_aeq_unregister_swe_cb() instead >> drivers/net/ethernet/huawei/hinic/hinic_eqs.c:417: warning: expecting prototype for hinic_ceq_register_sw_cb(). Prototype was for hinic_ceq_register_cb() instead -- >> drivers/net/ethernet/huawei/hinic/hinic_mbox.c:373: warning: expecting prototype for hinic_unregister_ppf_mbox_cb(). Prototype was for hinic_unregister_pf_mbox_cb() instead drivers/net/ethernet/huawei/hinic/hinic_mbox.c:411: warning: expecting prototype for hinic_unregister_ppf_mbox_cb(). Prototype was for hinic_unregister_ppf_to_pf_mbox_cb() instead -- drivers/net/ethernet/huawei/hinic/hinic_hwif.c:581: warning: Function parameter or member 'intr_reg_base' not described in 'hinic_init_hwif' drivers/net/ethernet/huawei/hinic/hinic_hwif.c:581: warning: Function parameter or member 'db_base_phy' not described in 'hinic_init_hwif' drivers/net/ethernet/huawei/hinic/hinic_hwif.c:581: warning: Function parameter or member 'db_base' not described in 'hinic_init_hwif' drivers/net/ethernet/huawei/hinic/hinic_hwif.c:581: warning: Function parameter or member 'dwqe_mapping' not described in 'hinic_init_hwif' >> drivers/net/ethernet/huawei/hinic/hinic_hwif.c:717: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * get function id from register,used by sriov hot migration process drivers/net/ethernet/huawei/hinic/hinic_hwif.c:802: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * get function id, used by sriov hot migratition process. vim +373 drivers/net/ethernet/huawei/hinic/hinic_mbox.c 9c1c9598010fbb drivers/net/ethernet/huawei/hinic/hinic_mbox.c Zhou Shuai 2024-03-13 365 9c1c9598010fbb drivers/net/ethernet/huawei/hinic/hinic_mbox.c Zhou Shuai 2024-03-13 366 /** 9c1c9598010fbb drivers/net/ethernet/huawei/hinic/hinic_mbox.c Zhou Shuai 2024-03-13 367 * hinic_unregister_ppf_mbox_cb - unregister the mbox callback for pf a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 368 * @hwdev: the pointer to hw device a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 369 * @mod: specific mod that the callback will handle a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 370 */ a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 371 void hinic_unregister_pf_mbox_cb(struct hinic_hwdev *hwdev, a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 372 enum hinic_mod_type mod) a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 @373 { a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 374 struct hinic_mbox_func_to_func *func_to_func = hwdev->func_to_func; a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 375 a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 376 clear_bit(HINIC_PF_MBOX_CB_REG, &func_to_func->pf_mbox_cb_state[mod]); a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 377 a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 378 while (test_bit(HINIC_PF_MBOX_CB_RUNNING, a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 379 &func_to_func->pf_mbox_cb_state[mod])) a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 380 usleep_range(900, 1000); a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 381 a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 382 func_to_func->pf_mbox_cb[mod] = NULL; a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 383 } a425b6e1c69ba9 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c Luo bin 2020-04-25 384 :::::: The code at line 373 was first introduced by commit :::::: a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c hinic: add mailbox function support :::::: TO: Luo bin <luobin9(a)huawei.com> :::::: CC: David S. Miller <davem(a)davemloft.net> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:OLK-6.6 3542/3542] arch/x86/kernel/cpu/proc.c:63:5: warning: no previous prototype for function 'show_cpuinfo'
by kernel test robot 15 Dec '25

15 Dec '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 549c32bcd16ff65ec78f30270d68abe28dfddcc8 commit: 9d3b0e8891b8b3450a7cd6d1367946a1c69e4eb9 [3542/3542] bpf: Add cpuinfo_x86 iterator target config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20251215/202512151347.pYQgm67P-lkp@…) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512151347.pYQgm67P-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512151347.pYQgm67P-lkp@intel.com/ All warnings (new ones prefixed by >>): >> arch/x86/kernel/cpu/proc.c:63:5: warning: no previous prototype for function 'show_cpuinfo' [-Wmissing-prototypes] 63 | int show_cpuinfo(struct seq_file *m, void *v) | ^ arch/x86/kernel/cpu/proc.c:63:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 63 | int show_cpuinfo(struct seq_file *m, void *v) | ^ | static 1 warning generated. vim +/show_cpuinfo +63 arch/x86/kernel/cpu/proc.c 62 > 63 int show_cpuinfo(struct seq_file *m, void *v) 64 { 65 struct cpuinfo_x86 *c = v; 66 unsigned int cpu; 67 int i; 68 69 cpu = c->cpu_index; 70 seq_printf(m, "processor\t: %u\n" 71 "vendor_id\t: %s\n" 72 "cpu family\t: %d\n" 73 "model\t\t: %u\n" 74 "model name\t: %s\n", 75 cpu, 76 c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown", 77 c->x86, 78 c->x86_model, 79 c->x86_model_id[0] ? c->x86_model_id : "unknown"); 80 81 if (c->x86_stepping || c->cpuid_level >= 0) 82 seq_printf(m, "stepping\t: %d\n", c->x86_stepping); 83 else 84 seq_puts(m, "stepping\t: unknown\n"); 85 if (c->microcode) 86 seq_printf(m, "microcode\t: 0x%x\n", c->microcode); 87 88 if (cpu_has(c, X86_FEATURE_TSC)) { 89 unsigned int freq = arch_freq_get_on_cpu(cpu); 90 91 seq_printf(m, "cpu MHz\t\t: %u.%03u\n", freq / 1000, (freq % 1000)); 92 } 93 94 /* Cache size */ 95 if (c->x86_cache_size) 96 seq_printf(m, "cache size\t: %u KB\n", c->x86_cache_size); 97 98 show_cpuinfo_core(m, c, cpu); 99 show_cpuinfo_misc(m, c); 100 101 seq_puts(m, "flags\t\t:"); 102 for (i = 0; i < 32*NCAPINTS; i++) 103 if (cpu_has(c, i) && x86_cap_flags[i] != NULL) { 104 if (c->x86_vendor == X86_VENDOR_HYGON) 105 seq_printf(m, " %s", i == X86_FEATURE_SEV ? "csv" : 106 (i == X86_FEATURE_SEV_ES ? "csv2" : 107 x86_cap_flags[i])); 108 else 109 seq_printf(m, " %s", x86_cap_flags[i]); 110 } 111 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3542/3542] drivers/net/ethernet/linkdata/sxe/sxepf/sxe_debugfs.c:459:6: error: no previous prototype for 'sxe_debugfs_entries_exit'
by kernel test robot 15 Dec '25

15 Dec '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 549c32bcd16ff65ec78f30270d68abe28dfddcc8 commit: dd013ad487534c1838afc2f55efdb5daec15aace [3542/3542] Ethernet: Linkdata: Supports Linkdata ethernet Controllers config: x86_64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20251215/202512150524.N6WnCpPL-lkp@…) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512150524.N6WnCpPL-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512150524.N6WnCpPL-lkp@intel.com/ All errors (new ones prefixed by >>): >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_xdp.c:410:6: error: no previous prototype for 'sxe_txrx_ring_enable' [-Werror=missing-prototypes] 410 | void sxe_txrx_ring_enable(struct sxe_adapter *adapter, u32 ring_idx) | ^~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- drivers/net/ethernet/linkdata/sxe/sxepf/sxe_debugfs.c:432:6: error: no previous prototype for 'sxe_debugfs_entries_init' [-Werror=missing-prototypes] 432 | void sxe_debugfs_entries_init(struct sxe_adapter *adapter) | ^~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_debugfs.c:459:6: error: no previous prototype for 'sxe_debugfs_entries_exit' [-Werror=missing-prototypes] 459 | void sxe_debugfs_entries_exit(struct sxe_adapter *adapter) | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_debugfs.c:465:6: error: no previous prototype for 'sxe_debugfs_init' [-Werror=missing-prototypes] 465 | void sxe_debugfs_init(void) | ^~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_debugfs.c:470:6: error: no previous prototype for 'sxe_debugfs_exit' [-Werror=missing-prototypes] 470 | void sxe_debugfs_exit(void) | ^~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_ethtool.c:2022:5: error: no previous prototype for 'sxe_reg_test' [-Werror=missing-prototypes] 2022 | int sxe_reg_test(struct sxe_adapter *adapter) | ^~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_ethtool.c:2644:5: error: no previous prototype for 'sxe_phys_id_set' [-Werror=missing-prototypes] 2644 | int sxe_phys_id_set(struct net_device *netdev, enum ethtool_phys_id_state state) | ^~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_ethtool.c: In function 'sxe_get_module_eeprom': drivers/net/ethernet/linkdata/sxe/sxepf/sxe_ethtool.c:2736:47: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body] 2736 | LOG_ERROR("read sfp failed\n"); | ^ cc1: all warnings being treated as errors -- >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:230:6: error: no previous prototype for 'sxe_hw_no_snoop_disable' [-Werror=missing-prototypes] 230 | void sxe_hw_no_snoop_disable(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:262:6: error: no previous prototype for 'sxe_hw_uc_addr_pool_del' [-Werror=missing-prototypes] 262 | void sxe_hw_uc_addr_pool_del(struct sxe_hw *hw, u32 rar_idx, u32 pool_idx) | ^~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:283:5: error: no previous prototype for 'sxe_hw_uc_addr_pool_enable' [-Werror=missing-prototypes] 283 | s32 sxe_hw_uc_addr_pool_enable(struct sxe_hw *hw, u8 rar_idx, u8 pool_idx) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:337:5: error: no previous prototype for 'sxe_hw_nic_reset' [-Werror=missing-prototypes] 337 | s32 sxe_hw_nic_reset(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:367:6: error: no previous prototype for 'sxe_hw_pf_rst_done_set' [-Werror=missing-prototypes] 367 | void sxe_hw_pf_rst_done_set(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:735:5: error: no previous prototype for 'sxe_hw_pending_irq_read_clear' [-Werror=missing-prototypes] 735 | u32 sxe_hw_pending_irq_read_clear(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:740:6: error: no previous prototype for 'sxe_hw_pending_irq_write_clear' [-Werror=missing-prototypes] 740 | void sxe_hw_pending_irq_write_clear(struct sxe_hw *hw, u32 value) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:745:5: error: no previous prototype for 'sxe_hw_irq_cause_get' [-Werror=missing-prototypes] 745 | u32 sxe_hw_irq_cause_get(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:765:6: error: no previous prototype for 'sxe_hw_ring_irq_auto_disable' [-Werror=missing-prototypes] 765 | void sxe_hw_ring_irq_auto_disable(struct sxe_hw *hw, bool is_msix) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:775:6: error: no previous prototype for 'sxe_hw_irq_general_reg_set' [-Werror=missing-prototypes] 775 | void sxe_hw_irq_general_reg_set(struct sxe_hw *hw, u32 value) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:780:5: error: no previous prototype for 'sxe_hw_irq_general_reg_get' [-Werror=missing-prototypes] 780 | u32 sxe_hw_irq_general_reg_get(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:790:6: error: no previous prototype for 'sxe_hw_event_irq_map' [-Werror=missing-prototypes] 790 | void sxe_hw_event_irq_map(struct sxe_hw *hw, u8 offset, u16 irq_idx) | ^~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:806:6: error: no previous prototype for 'sxe_hw_ring_irq_map' [-Werror=missing-prototypes] 806 | void sxe_hw_ring_irq_map(struct sxe_hw *hw, bool is_tx, u16 reg_idx, | ^~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:823:6: error: no previous prototype for 'sxe_hw_ring_irq_interval_set' [-Werror=missing-prototypes] 823 | void sxe_hw_ring_irq_interval_set(struct sxe_hw *hw, u16 irq_idx, u32 interval) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:838:6: error: no previous prototype for 'sxe_hw_event_irq_auto_clear_set' [-Werror=missing-prototypes] 838 | void sxe_hw_event_irq_auto_clear_set(struct sxe_hw *hw, u32 value) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:843:6: error: no previous prototype for 'sxe_hw_specific_irq_disable' [-Werror=missing-prototypes] 843 | void sxe_hw_specific_irq_disable(struct sxe_hw *hw, u32 value) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:848:6: error: no previous prototype for 'sxe_hw_specific_irq_enable' [-Werror=missing-prototypes] 848 | void sxe_hw_specific_irq_enable(struct sxe_hw *hw, u32 value) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:876:6: error: no previous prototype for 'sxe_hw_all_irq_disable' [-Werror=missing-prototypes] 876 | void sxe_hw_all_irq_disable(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:994:5: error: no previous prototype for 'sxe_hw_link_speed_get' [-Werror=missing-prototypes] 994 | u32 sxe_hw_link_speed_get(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1014:6: error: no previous prototype for 'sxe_hw_link_speed_set' [-Werror=missing-prototypes] 1014 | void sxe_hw_link_speed_set(struct sxe_hw *hw, u32 speed) | ^~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1033:6: error: no previous prototype for 'sxe_hw_is_link_state_up' [-Werror=missing-prototypes] 1033 | bool sxe_hw_is_link_state_up(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1055:6: error: no previous prototype for 'sxe_hw_mac_pad_enable' [-Werror=missing-prototypes] 1055 | void sxe_hw_mac_pad_enable(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1064:5: error: no previous prototype for 'sxe_hw_fc_enable' [-Werror=missing-prototypes] 1064 | s32 sxe_hw_fc_enable(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1135:6: error: no previous prototype for 'sxe_fc_autoneg_localcap_set' [-Werror=missing-prototypes] 1135 | void sxe_fc_autoneg_localcap_set(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1164:5: error: no previous prototype for 'sxe_hw_pfc_enable' [-Werror=missing-prototypes] 1164 | s32 sxe_hw_pfc_enable(struct sxe_hw *hw, u8 tc_idx) | ^~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1256:6: error: no previous prototype for 'sxe_hw_crc_configure' [-Werror=missing-prototypes] 1256 | void sxe_hw_crc_configure(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1264:6: error: no previous prototype for 'sxe_hw_loopback_switch' [-Werror=missing-prototypes] 1264 | void sxe_hw_loopback_switch(struct sxe_hw *hw, bool is_enable) | ^~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1276:6: error: no previous prototype for 'sxe_hw_mac_txrx_enable' [-Werror=missing-prototypes] 1276 | void sxe_hw_mac_txrx_enable(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1285:6: error: no previous prototype for 'sxe_hw_mac_max_frame_set' [-Werror=missing-prototypes] 1285 | void sxe_hw_mac_max_frame_set(struct sxe_hw *hw, u32 max_frame) | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1298:5: error: no previous prototype for 'sxe_hw_mac_max_frame_get' [-Werror=missing-prototypes] 1298 | u32 sxe_hw_mac_max_frame_get(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1330:6: error: no previous prototype for 'sxe_hw_fc_tc_high_water_mark_set' [-Werror=missing-prototypes] 1330 | void sxe_hw_fc_tc_high_water_mark_set(struct sxe_hw *hw, u8 tc_idx, u32 mark) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1335:6: error: no previous prototype for 'sxe_hw_fc_tc_low_water_mark_set' [-Werror=missing-prototypes] 1335 | void sxe_hw_fc_tc_low_water_mark_set(struct sxe_hw *hw, u8 tc_idx, u32 mark) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1340:6: error: no previous prototype for 'sxe_hw_is_fc_autoneg_disabled' [-Werror=missing-prototypes] 1340 | bool sxe_hw_is_fc_autoneg_disabled(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1345:6: error: no previous prototype for 'sxe_hw_fc_autoneg_disable_set' [-Werror=missing-prototypes] 1345 | void sxe_hw_fc_autoneg_disable_set(struct sxe_hw *hw, bool is_disabled) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1360:6: error: no previous prototype for 'sxe_hw_fc_requested_mode_set' [-Werror=missing-prototypes] 1360 | void sxe_hw_fc_requested_mode_set(struct sxe_hw *hw, enum sxe_fc_mode mode) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1388:5: error: no previous prototype for 'sxe_hw_rx_mode_get' [-Werror=missing-prototypes] 1388 | u32 sxe_hw_rx_mode_get(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1393:5: error: no previous prototype for 'sxe_hw_pool_rx_mode_get' [-Werror=missing-prototypes] 1393 | u32 sxe_hw_pool_rx_mode_get(struct sxe_hw *hw, u16 pool_idx) | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1398:6: error: no previous prototype for 'sxe_hw_rx_mode_set' [-Werror=missing-prototypes] 1398 | void sxe_hw_rx_mode_set(struct sxe_hw *hw, u32 filter_ctrl) | ^~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1403:6: error: no previous prototype for 'sxe_hw_pool_rx_mode_set' [-Werror=missing-prototypes] 1403 | void sxe_hw_pool_rx_mode_set(struct sxe_hw *hw, u32 vmolr, u16 pool_idx) | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1408:6: error: no previous prototype for 'sxe_hw_rx_lro_enable' [-Werror=missing-prototypes] 1408 | void sxe_hw_rx_lro_enable(struct sxe_hw *hw, bool is_enable) | ^~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1420:6: error: no previous prototype for 'sxe_hw_rx_nfs_filter_disable' [-Werror=missing-prototypes] 1420 | void sxe_hw_rx_nfs_filter_disable(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1428:6: error: no previous prototype for 'sxe_hw_rx_udp_frag_checksum_disable' [-Werror=missing-prototypes] 1428 | void sxe_hw_rx_udp_frag_checksum_disable(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1437:6: error: no previous prototype for 'sxe_hw_fc_mac_addr_set' [-Werror=missing-prototypes] 1437 | void sxe_hw_fc_mac_addr_set(struct sxe_hw *hw, u8 *mac_addr) | ^~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1449:5: error: no previous prototype for 'sxe_hw_uc_addr_add' [-Werror=missing-prototypes] 1449 | s32 sxe_hw_uc_addr_add(struct sxe_hw *hw, u32 rar_idx, u8 *addr, u32 pool_idx) | ^~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1484:5: error: no previous prototype for 'sxe_hw_uc_addr_del' [-Werror=missing-prototypes] 1484 | s32 sxe_hw_uc_addr_del(struct sxe_hw *hw, u32 index) | ^~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1510:6: error: no previous prototype for 'sxe_hw_mta_hash_table_set' [-Werror=missing-prototypes] 1510 | void sxe_hw_mta_hash_table_set(struct sxe_hw *hw, u8 index, u32 value) | ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1515:6: error: no previous prototype for 'sxe_hw_mta_hash_table_update' [-Werror=missing-prototypes] 1515 | void sxe_hw_mta_hash_table_update(struct sxe_hw *hw, u8 reg_idx, u8 bit_idx) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1525:5: error: no previous prototype for 'sxe_hw_mc_filter_get' [-Werror=missing-prototypes] 1525 | u32 sxe_hw_mc_filter_get(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1530:6: error: no previous prototype for 'sxe_hw_mc_filter_enable' [-Werror=missing-prototypes] 1530 | void sxe_hw_mc_filter_enable(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1554:6: error: no previous prototype for 'sxe_hw_uc_addr_clear' [-Werror=missing-prototypes] 1554 | void sxe_hw_uc_addr_clear(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1587:6: error: no previous prototype for 'sxe_hw_vt_ctrl_cfg' [-Werror=missing-prototypes] 1587 | void sxe_hw_vt_ctrl_cfg(struct sxe_hw *hw, u8 default_pool) | ^~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1601:6: error: no previous prototype for 'sxe_hw_vt_disable' [-Werror=missing-prototypes] 1601 | void sxe_hw_vt_disable(struct sxe_hw *hw) | ^~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1675:5: error: no previous prototype for 'sxe_hw_vlan_pool_filter_read' [-Werror=missing-prototypes] 1675 | u32 sxe_hw_vlan_pool_filter_read(struct sxe_hw *hw, u16 reg_index) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1697:6: error: no previous prototype for 'sxe_hw_vlan_filter_array_write' [-Werror=missing-prototypes] 1697 | void sxe_hw_vlan_filter_array_write(struct sxe_hw *hw, u16 reg_index, u32 value) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1702:5: error: no previous prototype for 'sxe_hw_vlan_filter_array_read' [-Werror=missing-prototypes] 1702 | u32 sxe_hw_vlan_filter_array_read(struct sxe_hw *hw, u16 reg_index) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_hw.c:1707:6: error: no previous prototype for 'sxe_hw_vlan_filter_switch' [-Werror=missing-prototypes] 1707 | void sxe_hw_vlan_filter_switch(struct sxe_hw *hw, bool is_enable) -- >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_irq.c:136:5: error: no previous prototype for 'sxe_msi_irq_init' [-Werror=missing-prototypes] 136 | int sxe_msi_irq_init(struct sxe_adapter *adapter) | ^~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_irq.c:182:6: error: no previous prototype for 'sxe_disable_dcb' [-Werror=missing-prototypes] 182 | void sxe_disable_dcb(struct sxe_adapter *adapter) | ^~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_irq.c:212:6: error: no previous prototype for 'sxe_disable_rss' [-Werror=missing-prototypes] 212 | void sxe_disable_rss(struct sxe_adapter *adapter) | ^~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_irq.c:729:6: error: no previous prototype for 'sxe_lsc_irq_handler' [-Werror=missing-prototypes] 729 | void sxe_lsc_irq_handler(struct sxe_adapter *adapter) | ^~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_irq.c:745:6: error: no previous prototype for 'sxe_mailbox_irq_handler' [-Werror=missing-prototypes] 745 | void sxe_mailbox_irq_handler(struct sxe_adapter *adapter) | ^~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_main.c:70:6: error: no previous prototype for 'sxe_allow_inval_mac' [-Werror=missing-prototypes] 70 | bool sxe_allow_inval_mac(void) | ^~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_phy.c:733:5: error: no previous prototype for 'sxe_multispeed_sfp_link_configure' [-Werror=missing-prototypes] 733 | s32 sxe_multispeed_sfp_link_configure(struct sxe_adapter *adapter, u32 speed) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_rx_proc.c:1431:6: error: no previous prototype for 'sxe_headers_cleanup' [-Werror=missing-prototypes] 1431 | bool sxe_headers_cleanup(struct sxe_ring *rx_ring, | ^~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_rx_proc.c:1569:6: error: no previous prototype for 'sxe_rx_buffer_page_offset_update' [-Werror=missing-prototypes] 1569 | void sxe_rx_buffer_page_offset_update(struct sxe_ring *rx_ring, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- drivers/net/ethernet/linkdata/sxe/sxepf/sxe_sriov.c: In function 'sxe_vf_uc_addr_del': >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_sriov.c:766:13: error: variable 'ret' set but not used [-Werror=unused-but-set-variable] 766 | s32 ret; | ^~~ drivers/net/ethernet/linkdata/sxe/sxepf/sxe_sriov.c: At top level: >> drivers/net/ethernet/linkdata/sxe/sxepf/sxe_sriov.c:1552:6: error: no previous prototype for 'sxe_set_vf_link_enable' [-Werror=missing-prototypes] 1552 | void sxe_set_vf_link_enable(struct sxe_adapter *adapter, s32 vf_idx, s32 state) | ^~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:160:6: error: no previous prototype for 'sxevf_hw_stop' [-Werror=missing-prototypes] 160 | void sxevf_hw_stop(struct sxevf_hw *hw) | ^~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:187:6: error: no previous prototype for 'sxevf_msg_write' [-Werror=missing-prototypes] 187 | void sxevf_msg_write(struct sxevf_hw *hw, u8 index, u32 msg) | ^~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:196:5: error: no previous prototype for 'sxevf_msg_read' [-Werror=missing-prototypes] 196 | u32 sxevf_msg_read(struct sxevf_hw *hw, u8 index) | ^~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:206:5: error: no previous prototype for 'sxevf_mailbox_read' [-Werror=missing-prototypes] 206 | u32 sxevf_mailbox_read(struct sxevf_hw *hw) | ^~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:211:6: error: no previous prototype for 'sxevf_mailbox_write' [-Werror=missing-prototypes] 211 | void sxevf_mailbox_write(struct sxevf_hw *hw, u32 value) | ^~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:216:6: error: no previous prototype for 'sxevf_pf_req_irq_trigger' [-Werror=missing-prototypes] 216 | void sxevf_pf_req_irq_trigger(struct sxevf_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:221:6: error: no previous prototype for 'sxevf_pf_ack_irq_trigger' [-Werror=missing-prototypes] 221 | void sxevf_pf_ack_irq_trigger(struct sxevf_hw *hw) | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:226:6: error: no previous prototype for 'sxevf_event_irq_map' [-Werror=missing-prototypes] 226 | void sxevf_event_irq_map(struct sxevf_hw *hw, u16 vector) | ^~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:240:6: error: no previous prototype for 'sxevf_specific_irq_enable' [-Werror=missing-prototypes] 240 | void sxevf_specific_irq_enable(struct sxevf_hw *hw, u32 value) | ^~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:245:6: error: no previous prototype for 'sxevf_irq_enable' [-Werror=missing-prototypes] 245 | void sxevf_irq_enable(struct sxevf_hw *hw, u32 mask) | ^~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:251:6: error: no previous prototype for 'sxevf_irq_disable' [-Werror=missing-prototypes] 251 | void sxevf_irq_disable(struct sxevf_hw *hw) | ^~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:259:6: error: no previous prototype for 'sxevf_hw_ring_irq_map' [-Werror=missing-prototypes] 259 | void sxevf_hw_ring_irq_map(struct sxevf_hw *hw, bool is_tx, u16 hw_ring_idx, | ^~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:276:6: error: no previous prototype for 'sxevf_ring_irq_interval_set' [-Werror=missing-prototypes] 276 | void sxevf_ring_irq_interval_set(struct sxevf_hw *hw, u16 irq_idx, u32 interval) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:313:6: error: no previous prototype for 'sxevf_hw_reset' [-Werror=missing-prototypes] 313 | void sxevf_hw_reset(struct sxevf_hw *hw) | ^~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:324:5: error: no previous prototype for 'sxevf_link_state_get' [-Werror=missing-prototypes] 324 | u32 sxevf_link_state_get(struct sxevf_hw *hw) | ^~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:539:6: error: no previous prototype for 'sxevf_tx_ring_switch' [-Werror=missing-prototypes] 539 | void sxevf_tx_ring_switch(struct sxevf_hw *hw, u8 reg_idx, bool is_on) | ^~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:594:6: error: no previous prototype for 'sxevf_rx_ring_switch' [-Werror=missing-prototypes] 594 | void sxevf_rx_ring_switch(struct sxevf_hw *hw, u8 reg_idx, bool is_on) | ^~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:626:6: error: no previous prototype for 'sxevf_rx_ring_desc_configure' [-Werror=missing-prototypes] 626 | void sxevf_rx_ring_desc_configure(struct sxevf_hw *hw, u32 desc_mem_len, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:640:6: error: no previous prototype for 'sxevf_rx_rcv_ctl_configure' [-Werror=missing-prototypes] 640 | void sxevf_rx_rcv_ctl_configure(struct sxevf_hw *hw, u8 reg_idx, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:697:6: error: no previous prototype for 'sxevf_32bit_counter_update' [-Werror=missing-prototypes] 697 | void sxevf_32bit_counter_update(struct sxevf_hw *hw, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:710:6: error: no previous prototype for 'sxevf_36bit_counter_update' [-Werror=missing-prototypes] 710 | void sxevf_36bit_counter_update(struct sxevf_hw *hw, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:726:6: error: no previous prototype for 'sxevf_packet_stats_get' [-Werror=missing-prototypes] 726 | void sxevf_packet_stats_get(struct sxevf_hw *hw, struct sxevf_hw_stats *stats) | ^~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/linkdata/sxevf/sxevf/sxevf_hw.c:740:6: error: no previous prototype for 'sxevf_stats_init_value_get' [-Werror=missing-prototypes] 740 | void sxevf_stats_init_value_get(struct sxevf_hw *hw, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors .. vim +/sxe_debugfs_entries_exit +459 drivers/net/ethernet/linkdata/sxe/sxepf/sxe_debugfs.c 458 > 459 void sxe_debugfs_entries_exit(struct sxe_adapter *adapter) 460 { 461 debugfs_remove_recursive(adapter->debugfs_entries); 462 adapter->debugfs_entries = NULL; 463 } 464 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-5.10] firewire: net: fix use after free in fwnet_finish_incoming_packet()
by Xia Fukun 15 Dec '25

15 Dec '25

From: Zhang Shurong <zhang_shurong(a)foxmail.com> mainline inclusion from mainline-v6.17-rc7 commit 3ff256751a2853e1ffaa36958ff933ccc98c6cb5 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ICYQPN CVE: CVE-2023-53432 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- The netif_rx() function frees the skb so we can't dereference it to save the skb->len. Signed-off-by: Zhang Shurong <zhang_shurong(a)foxmail.com> Link: https://lore.kernel.org/r/tencent_3B3D24B66ED66A6BB73CC0E63C6A14E45109@qq.c… Signed-off-by: Takashi Sakamoto <o-takashi(a)sakamocchi.jp> Conflicts: drivers/firewire/net.c [Context differences.] Signed-off-by: Xia Fukun <xiafukun(a)huawei.com> --- drivers/firewire/net.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c index 715e491dfbc3..8504e95ede90 100644 --- a/drivers/firewire/net.c +++ b/drivers/firewire/net.c @@ -489,7 +489,7 @@ static int fwnet_finish_incoming_packet(struct net_device *net, bool is_broadcast, u16 ether_type) { struct fwnet_device *dev; - int status; + int status, len; __be64 guid; switch (ether_type) { @@ -546,13 +546,15 @@ static int fwnet_finish_incoming_packet(struct net_device *net, } skb->protocol = protocol; } + + len = skb->len; status = netif_rx(skb); if (status == NET_RX_DROP) { net->stats.rx_errors++; net->stats.rx_dropped++; } else { net->stats.rx_packets++; - net->stats.rx_bytes += skb->len; + net->stats.rx_bytes += len; } return 0; -- 2.34.1

2 1

[PATCH OLK-6.6] mm: migrate: add dma copy offloading for hugetlb
by Zeng Heng 15 Dec '25

15 Dec '25

From: Tong Tiangen <tongtiangen(a)huawei.com> hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IDBGTZ CVE: NA ------------------------------- Large memory migration imposes significant overhead on the CPU. This patch introduces enhancements to the page migration by offloading the copy to UDMA hardware which based on the DMA engine framework, and a new migration mode has been introduced, If DMA migration fails, it will fall back to CPU migration. DMA migration supports both asynchronous and synchronous modes for subsequent debugging purposes. Signed-off-by: Tong Tiangen <tongtiangen(a)huawei.com> Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- arch/arm64/configs/openeuler_defconfig | 1 + include/linux/migrate_mode.h | 2 + include/linux/mm.h | 8 ++ mm/Kconfig | 7 ++ mm/Makefile | 1 + mm/migrate.c | 5 + mm/migrate_dma.c | 143 +++++++++++++++++++++++++ 7 files changed, 167 insertions(+) create mode 100644 mm/migrate_dma.c diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index b9a451bd7d65..44e1c0debb1a 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -1186,6 +1186,7 @@ CONFIG_COMPACTION=y CONFIG_COMPACT_UNEVICTABLE_DEFAULT=1 CONFIG_PAGE_REPORTING=y CONFIG_MIGRATION=y +CONFIG_MIGRATE_PAGES_DMA_OFFLOADING=y CONFIG_DEVICE_MIGRATION=y CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION=y CONFIG_ARCH_ENABLE_THP_MIGRATION=y diff --git a/include/linux/migrate_mode.h b/include/linux/migrate_mode.h index 0f577f932bb4..4c992bc66575 100644 --- a/include/linux/migrate_mode.h +++ b/include/linux/migrate_mode.h @@ -19,6 +19,8 @@ enum migrate_mode { MIGRATE_SYNC_NO_COPY, }; +#define MIGRATE_ASYNC_DMA_OFFLOADING (10) + enum migrate_reason { MR_COMPACTION, MR_MEMORY_FAILURE, diff --git a/include/linux/mm.h b/include/linux/mm.h index c0040a2014c4..036822cb1b9d 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1330,6 +1330,14 @@ void put_pages_list(struct list_head *pages); void split_page(struct page *page, unsigned int order); void folio_copy(struct folio *dst, struct folio *src); int folio_mc_copy(struct folio *dst, struct folio *src); +#ifdef CONFIG_MIGRATE_PAGES_DMA_OFFLOADING +int folio_dma_copy(struct folio *dst, struct folio *src); +#else +static inline int folio_dma_copy(struct folio *dst, struct folio *src) +{ + return -ENODEV; +} +#endif unsigned long nr_free_buffer_pages(void); diff --git a/mm/Kconfig b/mm/Kconfig index 4eb0642b71e5..9408a3ca7f4c 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -696,6 +696,13 @@ config MIGRATION pages as migration can relocate pages to satisfy a huge page allocation instead of reclaiming. +config MIGRATE_PAGES_DMA_OFFLOADING + bool "Support to use DMA channels for page migration" + depends on DMA_ENGINE + default y + help + Allows kernel to use dma offloading for page migraton. + config DEVICE_MIGRATION def_bool MIGRATION && ZONE_DEVICE diff --git a/mm/Makefile b/mm/Makefile index e45cdeda47b7..dd81f8c33e03 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -92,6 +92,7 @@ obj-$(CONFIG_FAILSLAB) += failslab.o obj-$(CONFIG_FAIL_PAGE_ALLOC) += fail_page_alloc.o obj-$(CONFIG_MEMTEST) += memtest.o obj-$(CONFIG_MIGRATION) += migrate.o +obj-$(CONFIG_MIGRATE_PAGES_DMA_OFFLOADING) += migrate_dma.o obj-$(CONFIG_NUMA) += memory-tiers.o obj-$(CONFIG_DEVICE_MIGRATION) += migrate_device.o obj-$(CONFIG_TRANSPARENT_HUGEPAGE) += huge_memory.o khugepaged.o diff --git a/mm/migrate.c b/mm/migrate.c index 4edd29d9a041..8b1058b28175 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -583,6 +583,11 @@ static int folio_migrate_mc_copy(struct folio *dst, struct folio *src, if (mode == MIGRATE_SYNC_NO_COPY) return 0; + if (mode == MIGRATE_ASYNC_DMA_OFFLOADING && folio_test_hugetlb(src)) + /* if dma offloading fail, fallback */ + if (!folio_dma_copy(dst, src)) + return 0; + return folio_mc_copy(dst, src); } diff --git a/mm/migrate_dma.c b/mm/migrate_dma.c new file mode 100644 index 000000000000..c6ff6f1258aa --- /dev/null +++ b/mm/migrate_dma.c @@ -0,0 +1,143 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Support to use DMA channels for page migration. + * + * Copyright (C) 2025 Huawei Limited + */ + +#include <linux/dmaengine.h> +#include <linux/dma-mapping.h> + +/* DMA channel track its transfers done */ +struct dma_channel_work { + struct dma_chan *chan; + enum dma_status status; + struct completion done; +}; + +static void folios_dma_copy_completion_callback(void *param, + const struct dmaengine_result *result) +{ + struct dma_channel_work *chan_work = param; + + if (result) { + enum dmaengine_tx_result dma_res = result->result; + + if (dma_res == DMA_TRANS_NOERROR) + chan_work->status = DMA_COMPLETE; + else + chan_work->status = DMA_ERROR; + } + + complete(&chan_work->done); +} + +static int process_folio_dma_transfer(struct dma_channel_work *chan_work, + struct folio *src, struct folio *dst) +{ + struct dma_chan *chan = chan_work->chan; + struct device *dev = dmaengine_get_dma_device(chan); + enum dma_ctrl_flags flags = DMA_CTRL_ACK; + struct dma_async_tx_descriptor *tx; + dma_addr_t src_handle, dst_handle; + size_t size = folio_size(src); + int ret; + + flags |= DMA_PREP_INTERRUPT; + + src_handle = dma_map_page(dev, &src->page, 0, size, DMA_TO_DEVICE); + if (dma_mapping_error(dev, src_handle)) { + pr_err("map dma src page error.\n"); + return -ENOMEM; + } + + dst_handle = dma_map_page(dev, &dst->page, 0, size, DMA_FROM_DEVICE); + if (dma_mapping_error(dev, dst_handle)) { + pr_err("map dma dst page error.\n"); + ret = -ENOMEM; + goto out_unmap; + } + + tx = dmaengine_prep_dma_memcpy(chan, dst_handle, src_handle, + size, flags); + if (unlikely(!tx)) { + pr_err("prep dma memcpy error.\n"); + ret = -EBUSY; + goto out_unmap_all; + } + + tx->callback_result = folios_dma_copy_completion_callback; + tx->callback_param = chan_work; + init_completion(&chan_work->done); + chan_work->status = DMA_ERROR; + + if (dma_submit_error(dmaengine_submit(tx))) { + pr_err("dma submit error.\n"); + ret = -EINVAL; + goto out_unmap_all; + } + + dma_async_issue_pending(chan); + if (!wait_for_completion_timeout(&chan_work->done, + msecs_to_jiffies(1000))) { + ret = -ETIMEDOUT; + goto out_unmap_all; + } + + ret = (chan_work->status == DMA_COMPLETE) ? 0 : -EPROTO; + +out_unmap_all: + dma_unmap_page(dev, dst_handle, size, DMA_FROM_DEVICE); +out_unmap: + dma_unmap_page(dev, src_handle, size, DMA_TO_DEVICE); + + return ret; +} + +static bool folio_dma_chan_filter(struct dma_chan *chan, void *param) +{ + return !strcmp(dev_name(chan->device->dev), "ub_dma_device"); +} + +int folio_dma_copy(struct folio *dst, struct folio *src) +{ + struct dma_channel_work *chan_work; + struct dma_slave_config dma_cfg; + struct dma_chan *chan; + dma_cap_mask_t mask; + int ret = -ENODEV; + + dma_cap_zero(mask); + dma_cap_set(DMA_MEMCPY, mask); + chan = dma_request_channel(mask, folio_dma_chan_filter, NULL); + if (!chan) { + pr_err("failed to allocate dma channel.\n"); + return ret; + } + + memset(&dma_cfg, 0, sizeof(dma_cfg)); + dma_cfg.direction = DMA_MEM_TO_MEM; + ret = dmaengine_slave_config(chan, &dma_cfg); + if (ret) { + pr_err("failed to config dma channel.\n"); + goto out_release; + } + + chan_work = kmalloc(sizeof(*chan_work), GFP_KERNEL); + if (unlikely(!chan_work)) { + pr_err("failed to allocate memory for chan work.\n"); + goto out_release; + } + + chan_work->chan = chan; + ret = process_folio_dma_transfer(chan_work, src, dst); + if (unlikely(ret)) + pr_err("failed to process folio dma transfer.\n"); + + kfree(chan_work); +out_release: + dma_release_channel(chan); + + return ret; +} +EXPORT_SYMBOL(folio_dma_copy); -- 2.25.1

2 1

[openeuler:OLK-6.6 3541/3541] kernel/livepatch/core.c:216:13: warning: no previous prototype for function 'arch_klp_skip_resolve'
by kernel test robot 15 Dec '25

15 Dec '25

Hi laokz, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: cd9eb9b4365b71652b2c2ac58293bea47c9f9302 commit: b8f3220637be1736c165c289c634f27841ac4e01 [3541/3541] livepatch: add arch hook before doing klp_resolve_symbols config: arm64-randconfig-001-20251212 (https://download.01.org/0day-ci/archive/20251215/202512150919.EC4St0LR-lkp@…) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512150919.EC4St0LR-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512150919.EC4St0LR-lkp@intel.com/ All warnings (new ones prefixed by >>): kernel/livepatch/core.c:97:12: warning: no previous prototype for function 'arch_klp_init_func' [-Wmissing-prototypes] 97 | int __weak arch_klp_init_func(struct klp_object *obj, struct klp_func *func) | ^ kernel/livepatch/core.c:97:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 97 | int __weak arch_klp_init_func(struct klp_object *obj, struct klp_func *func) | ^ | static >> kernel/livepatch/core.c:216:13: warning: no previous prototype for function 'arch_klp_skip_resolve' [-Wmissing-prototypes] 216 | bool __weak arch_klp_skip_resolve(unsigned int type) | ^ kernel/livepatch/core.c:216:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 216 | bool __weak arch_klp_skip_resolve(unsigned int type) | ^ | static kernel/livepatch/core.c:1767:12: warning: no previous prototype for function 'arch_klp_check_activeness_func' [-Wmissing-prototypes] 1767 | int __weak arch_klp_check_activeness_func(struct klp_func *func, int enable, | ^ kernel/livepatch/core.c:1767:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1767 | int __weak arch_klp_check_activeness_func(struct klp_func *func, int enable, | ^ | static kernel/livepatch/core.c:2022:14: warning: no previous prototype for function 'arch_klp_mem_alloc' [-Wmissing-prototypes] 2022 | void __weak *arch_klp_mem_alloc(size_t size) | ^ kernel/livepatch/core.c:2022:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2022 | void __weak *arch_klp_mem_alloc(size_t size) | ^ | static kernel/livepatch/core.c:2027:13: warning: no previous prototype for function 'arch_klp_mem_free' [-Wmissing-prototypes] 2027 | void __weak arch_klp_mem_free(void *mem) | ^ kernel/livepatch/core.c:2027:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2027 | void __weak arch_klp_mem_free(void *mem) | ^ | static kernel/livepatch/core.c:2032:13: warning: no previous prototype for function 'arch_klp_code_modify_prepare' [-Wmissing-prototypes] 2032 | void __weak arch_klp_code_modify_prepare(void) | ^ kernel/livepatch/core.c:2032:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2032 | void __weak arch_klp_code_modify_prepare(void) | ^ | static kernel/livepatch/core.c:2036:13: warning: no previous prototype for function 'arch_klp_code_modify_post_process' [-Wmissing-prototypes] 2036 | void __weak arch_klp_code_modify_post_process(void) | ^ kernel/livepatch/core.c:2036:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2036 | void __weak arch_klp_code_modify_post_process(void) | ^ | static kernel/livepatch/core.c:2049:12: warning: no previous prototype for function 'arch_klp_check_breakpoint' [-Wmissing-prototypes] 2049 | int __weak arch_klp_check_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ kernel/livepatch/core.c:2049:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2049 | int __weak arch_klp_check_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ | static kernel/livepatch/core.c:2063:13: warning: no previous prototype for function 'arch_klp_set_brk_func' [-Wmissing-prototypes] 2063 | void __weak arch_klp_set_brk_func(struct klp_func_node *func_node, void *new_func) | ^ kernel/livepatch/core.c:2063:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2063 | void __weak arch_klp_set_brk_func(struct klp_func_node *func_node, void *new_func) | ^ | static 9 warnings generated. vim +/arch_klp_skip_resolve +216 kernel/livepatch/core.c 214 215 #ifdef CONFIG_LIVEPATCH_WO_FTRACE > 216 bool __weak arch_klp_skip_resolve(unsigned int type) 217 { 218 return false; 219 } 220 #endif 221 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:OLK-6.6 3541/3541] kernel/sched/fair.c:143:14: sparse: sparse: symbol 'sysctl_overload_detect_period' was not declared. Should it be static?
by kernel test robot 15 Dec '25

15 Dec '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: cd9eb9b4365b71652b2c2ac58293bea47c9f9302 commit: a3c9f2da0a35df4e41751556be4308f57bdaf3d6 [3541/3541] sched: Introduce handle priority reversion mechanism config: arm64-randconfig-r113-20251213 (https://download.01.org/0day-ci/archive/20251215/202512150649.o2WPQrCa-lkp@…) compiler: aarch64-linux-gcc (GCC) 12.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512150649.o2WPQrCa-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512150649.o2WPQrCa-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) >> kernel/sched/fair.c:143:14: sparse: sparse: symbol 'sysctl_overload_detect_period' was not declared. Should it be static? >> kernel/sched/fair.c:144:14: sparse: sparse: symbol 'sysctl_offline_wait_interval' was not declared. Should it be static? kernel/sched/fair.c:1236:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_entity const *se @@ got struct sched_entity [noderef] __rcu * @@ kernel/sched/fair.c:1236:34: sparse: expected struct sched_entity const *se kernel/sched/fair.c:1236:34: sparse: got struct sched_entity [noderef] __rcu * kernel/sched/fair.c:3019:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu * @@ kernel/sched/fair.c:3019:13: sparse: expected struct task_struct *tsk kernel/sched/fair.c:3019:13: sparse: got struct task_struct [noderef] __rcu * kernel/sched/fair.c:12477:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/fair.c:12477:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:12477:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:5766:22: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/fair.c:5766:22: sparse: struct task_struct [noderef] __rcu * kernel/sched/fair.c:5766:22: sparse: struct task_struct * kernel/sched/fair.c:7809:20: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/fair.c:7809:20: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:7809:20: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:8014:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] tmp @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/fair.c:8014:9: sparse: expected struct sched_domain *[assigned] tmp kernel/sched/fair.c:8014:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:8113:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/fair.c:8113:38: sparse: expected struct task_struct *curr kernel/sched/fair.c:8113:38: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/fair.c:8333:22: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/fair.c:8333:22: sparse: struct task_struct [noderef] __rcu * kernel/sched/fair.c:8333:22: sparse: struct task_struct * kernel/sched/fair.c:8687:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/fair.c:8687:38: sparse: expected struct task_struct *curr kernel/sched/fair.c:8687:38: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/fair.c:9680:40: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *child @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/fair.c:9680:40: sparse: expected struct sched_domain *child kernel/sched/fair.c:9680:40: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/fair.c:10317:22: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/fair.c:10317:22: sparse: struct task_struct [noderef] __rcu * kernel/sched/fair.c:10317:22: sparse: struct task_struct * kernel/sched/fair.c:11749:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/fair.c:11749:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:11749:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:11406:44: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *sd_parent @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/fair.c:11406:44: sparse: expected struct sched_domain *sd_parent kernel/sched/fair.c:11406:44: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:11845:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/fair.c:11845:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:11845:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:2965:9: sparse: sparse: context imbalance in 'task_numa_placement' - different lock contexts for basic block kernel/sched/fair.c:7047:28: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/fair.c:7047:28: sparse: expected struct sched_domain *sd kernel/sched/fair.c:7047:28: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/fair.c:7053:28: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/fair.c:7053:28: sparse: expected struct sched_domain *sd kernel/sched/fair.c:7053:28: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/fair.c:7060:28: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/fair.c:7060:28: sparse: expected struct sched_domain *sd kernel/sched/fair.c:7060:28: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/fair.c:7068:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] tmp @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/fair.c:7068:17: sparse: expected struct sched_domain *[assigned] tmp kernel/sched/fair.c:7068:17: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c: note: in included file: kernel/sched/sched.h:2309:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2309:9: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2309:9: sparse: struct task_struct * kernel/sched/sched.h:2145:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2145:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2145:25: sparse: struct task_struct * kernel/sched/sched.h:2145:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2145:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2145:25: sparse: struct task_struct * vim +/sysctl_overload_detect_period +143 kernel/sched/fair.c 139 140 static DEFINE_PER_CPU_SHARED_ALIGNED(struct list_head, qos_throttled_cfs_rq); 141 static DEFINE_PER_CPU_SHARED_ALIGNED(struct hrtimer, qos_overload_timer); 142 static DEFINE_PER_CPU(int, qos_cpu_overload); > 143 unsigned int sysctl_overload_detect_period = 5000; /* in ms */ > 144 unsigned int sysctl_offline_wait_interval = 100; /* in ms */ 145 static int one_thousand = 1000; 146 static int hundred_thousand = 100000; 147 static int unthrottle_qos_cfs_rqs(int cpu); 148 #endif 149 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:OLK-6.6 3541/3541] kernel/livepatch/core.c:97:12: warning: no previous prototype for function 'arch_klp_init_func'
by kernel test robot 15 Dec '25

15 Dec '25

Hi Zheng, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: cd9eb9b4365b71652b2c2ac58293bea47c9f9302 commit: eabc33c6f2c91168537f10e9275b0921c9f78c45 [3541/3541] livepatch/ppc64: Implement livepatch without ftrace for ppc64be config: arm64-randconfig-001-20251212 (https://download.01.org/0day-ci/archive/20251215/202512150621.RknROZUX-lkp@…) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512150621.RknROZUX-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512150621.RknROZUX-lkp@intel.com/ All warnings (new ones prefixed by >>): >> kernel/livepatch/core.c:97:12: warning: no previous prototype for function 'arch_klp_init_func' [-Wmissing-prototypes] 97 | int __weak arch_klp_init_func(struct klp_object *obj, struct klp_func *func) | ^ kernel/livepatch/core.c:97:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 97 | int __weak arch_klp_init_func(struct klp_object *obj, struct klp_func *func) | ^ | static kernel/livepatch/core.c:1756:12: warning: no previous prototype for function 'arch_klp_check_activeness_func' [-Wmissing-prototypes] 1756 | int __weak arch_klp_check_activeness_func(struct klp_func *func, int enable, | ^ kernel/livepatch/core.c:1756:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1756 | int __weak arch_klp_check_activeness_func(struct klp_func *func, int enable, | ^ | static kernel/livepatch/core.c:2011:14: warning: no previous prototype for function 'arch_klp_mem_alloc' [-Wmissing-prototypes] 2011 | void __weak *arch_klp_mem_alloc(size_t size) | ^ kernel/livepatch/core.c:2011:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2011 | void __weak *arch_klp_mem_alloc(size_t size) | ^ | static kernel/livepatch/core.c:2016:13: warning: no previous prototype for function 'arch_klp_mem_free' [-Wmissing-prototypes] 2016 | void __weak arch_klp_mem_free(void *mem) | ^ kernel/livepatch/core.c:2016:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2016 | void __weak arch_klp_mem_free(void *mem) | ^ | static kernel/livepatch/core.c:2021:13: warning: no previous prototype for function 'arch_klp_code_modify_prepare' [-Wmissing-prototypes] 2021 | void __weak arch_klp_code_modify_prepare(void) | ^ kernel/livepatch/core.c:2021:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2021 | void __weak arch_klp_code_modify_prepare(void) | ^ | static kernel/livepatch/core.c:2025:13: warning: no previous prototype for function 'arch_klp_code_modify_post_process' [-Wmissing-prototypes] 2025 | void __weak arch_klp_code_modify_post_process(void) | ^ kernel/livepatch/core.c:2025:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2025 | void __weak arch_klp_code_modify_post_process(void) | ^ | static kernel/livepatch/core.c:2038:12: warning: no previous prototype for function 'arch_klp_check_breakpoint' [-Wmissing-prototypes] 2038 | int __weak arch_klp_check_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ kernel/livepatch/core.c:2038:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2038 | int __weak arch_klp_check_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ | static kernel/livepatch/core.c:2052:13: warning: no previous prototype for function 'arch_klp_set_brk_func' [-Wmissing-prototypes] 2052 | void __weak arch_klp_set_brk_func(struct klp_func_node *func_node, void *new_func) | ^ kernel/livepatch/core.c:2052:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2052 | void __weak arch_klp_set_brk_func(struct klp_func_node *func_node, void *new_func) | ^ | static 8 warnings generated. vim +/arch_klp_init_func +97 kernel/livepatch/core.c 96 > 97 int __weak arch_klp_init_func(struct klp_object *obj, struct klp_func *func) 98 { 99 return 0; 100 } 101 #endif /* CONFIG_LIVEPATCH_FTRACE */ 102 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:OLK-6.6 3541/3541] kernel/livepatch/core.c:2006:12: warning: no previous prototype for function 'arch_klp_check_breakpoint'
by kernel test robot 15 Dec '25

15 Dec '25

Hi Zheng, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: cd9eb9b4365b71652b2c2ac58293bea47c9f9302 commit: 470628a716984e1325b92bef4fa2140ff5a062a5 [3541/3541] livepatch: Use breakpoint exception to optimize enabling livepatch config: arm64-randconfig-001-20251212 (https://download.01.org/0day-ci/archive/20251215/202512150445.9iffkH6B-lkp@…) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512150445.9iffkH6B-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512150445.9iffkH6B-lkp@intel.com/ All warnings (new ones prefixed by >>): kernel/livepatch/core.c:1728:12: warning: no previous prototype for function 'arch_klp_check_activeness_func' [-Wmissing-prototypes] 1728 | int __weak arch_klp_check_activeness_func(struct klp_func *func, int enable, | ^ kernel/livepatch/core.c:1728:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1728 | int __weak arch_klp_check_activeness_func(struct klp_func *func, int enable, | ^ | static kernel/livepatch/core.c:1983:14: warning: no previous prototype for function 'arch_klp_mem_alloc' [-Wmissing-prototypes] 1983 | void __weak *arch_klp_mem_alloc(size_t size) | ^ kernel/livepatch/core.c:1983:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1983 | void __weak *arch_klp_mem_alloc(size_t size) | ^ | static kernel/livepatch/core.c:1988:13: warning: no previous prototype for function 'arch_klp_mem_free' [-Wmissing-prototypes] 1988 | void __weak arch_klp_mem_free(void *mem) | ^ kernel/livepatch/core.c:1988:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1988 | void __weak arch_klp_mem_free(void *mem) | ^ | static kernel/livepatch/core.c:1993:13: warning: no previous prototype for function 'arch_klp_code_modify_prepare' [-Wmissing-prototypes] 1993 | void __weak arch_klp_code_modify_prepare(void) | ^ kernel/livepatch/core.c:1993:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1993 | void __weak arch_klp_code_modify_prepare(void) | ^ | static kernel/livepatch/core.c:1997:13: warning: no previous prototype for function 'arch_klp_code_modify_post_process' [-Wmissing-prototypes] 1997 | void __weak arch_klp_code_modify_post_process(void) | ^ kernel/livepatch/core.c:1997:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1997 | void __weak arch_klp_code_modify_post_process(void) | ^ | static >> kernel/livepatch/core.c:2006:12: warning: no previous prototype for function 'arch_klp_check_breakpoint' [-Wmissing-prototypes] 2006 | int __weak arch_klp_check_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ kernel/livepatch/core.c:2006:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2006 | int __weak arch_klp_check_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ | static kernel/livepatch/core.c:2011:12: warning: no previous prototype for function 'arch_klp_add_breakpoint' [-Wmissing-prototypes] 2011 | int __weak arch_klp_add_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ kernel/livepatch/core.c:2011:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2011 | int __weak arch_klp_add_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ | static kernel/livepatch/core.c:2016:13: warning: no previous prototype for function 'arch_klp_remove_breakpoint' [-Wmissing-prototypes] 2016 | void __weak arch_klp_remove_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ kernel/livepatch/core.c:2016:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2016 | void __weak arch_klp_remove_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ | static >> kernel/livepatch/core.c:2020:13: warning: no previous prototype for function 'arch_klp_set_brk_func' [-Wmissing-prototypes] 2020 | void __weak arch_klp_set_brk_func(struct klp_func_node *func_node, void *new_func) | ^ kernel/livepatch/core.c:2020:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2020 | void __weak arch_klp_set_brk_func(struct klp_func_node *func_node, void *new_func) | ^ | static 9 warnings generated. vim +/arch_klp_check_breakpoint +2006 kernel/livepatch/core.c 2005 > 2006 int __weak arch_klp_check_breakpoint(struct arch_klp_data *arch_data, void *old_func) 2007 { 2008 return 0; 2009 } 2010 2011 int __weak arch_klp_add_breakpoint(struct arch_klp_data *arch_data, void *old_func) 2012 { 2013 return -EOPNOTSUPP; 2014 } 2015 2016 void __weak arch_klp_remove_breakpoint(struct arch_klp_data *arch_data, void *old_func) 2017 { 2018 } 2019 > 2020 void __weak arch_klp_set_brk_func(struct klp_func_node *func_node, void *new_func) 2021 { 2022 func_node->brk_func = new_func; 2023 } 2024 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:OLK-6.6 3541/3541] kernel/module/strict_rwx.c:36:6: warning: no previous prototype for function 'module_disable_ro'
by kernel test robot 15 Dec '25

15 Dec '25

Hi Zheng, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: cd9eb9b4365b71652b2c2ac58293bea47c9f9302 commit: c8783f92771c891518257c9deb22cd91d4e1a212 [3541/3541] livepatch/core: Revert module_enable_ro and module_disable_ro config: arm64-randconfig-001-20251212 (https://download.01.org/0day-ci/archive/20251215/202512150222.mwnNlqrD-lkp@…) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512150222.mwnNlqrD-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512150222.mwnNlqrD-lkp@intel.com/ All warnings (new ones prefixed by >>): >> kernel/module/strict_rwx.c:36:6: warning: no previous prototype for function 'module_disable_ro' [-Wmissing-prototypes] 36 | void module_disable_ro(const struct module *mod) | ^ kernel/module/strict_rwx.c:36:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 36 | void module_disable_ro(const struct module *mod) | ^ | static 1 warning generated. vim +/module_disable_ro +36 kernel/module/strict_rwx.c 34 35 #ifdef CONFIG_LIVEPATCH_WO_FTRACE > 36 void module_disable_ro(const struct module *mod) 37 { 38 if (!IS_ENABLED(CONFIG_STRICT_MODULE_RWX)) 39 return; 40 #ifdef CONFIG_STRICT_MODULE_RWX 41 if (!rodata_enabled) 42 return; 43 #endif 44 45 module_set_memory(mod, MOD_TEXT, set_memory_rw); 46 module_set_memory(mod, MOD_INIT_TEXT, set_memory_rw); 47 module_set_memory(mod, MOD_RODATA, set_memory_rw); 48 module_set_memory(mod, MOD_INIT_RODATA, set_memory_rw); 49 } 50 #endif /* CONFIG_LIVEPATCH_WO_FTRACE */ 51 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3541/3541] error: unknown target ABI 'ilp32'
by kernel test robot 15 Dec '25

15 Dec '25

Hi Andrew, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: cd9eb9b4365b71652b2c2ac58293bea47c9f9302 commit: f9b54a6714445cde83aeff0318cf767b3b81229d [3541/3541] arm64:ilp32: add ARM64_ILP32 to Kconfig config: arm64-randconfig-r131-20251213 (https://download.01.org/0day-ci/archive/20251215/202512150148.bF5oIxkA-lkp@…) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512150148.bF5oIxkA-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512150148.bF5oIxkA-lkp@intel.com/ All errors (new ones prefixed by >>): arch/arm64/kernel/vdso-ilp32/Makefile:84: FORCE prerequisite is missing arch/arm64/kernel/vdso-ilp32/Makefile:87: FORCE prerequisite is missing arch/arm64/kernel/vdso-ilp32/Makefile:90: FORCE prerequisite is missing >> error: unknown target ABI 'ilp32' make[3]: *** [scripts/Makefile.build:373: arch/arm64/kernel/vdso-ilp32/vdso-ilp32.lds] Error 1 clang: error: -Wl,-soname=linux-ilp32-vdso.so.1: 'linker' input unused [-Werror,-Wunused-command-line-argument] make[3]: *** [arch/arm64/kernel/vdso-ilp32/Makefile:84: arch/arm64/kernel/vdso-ilp32/vgettimeofday-ilp32.o] Error 1 >> error: unknown target ABI 'ilp32' >> error: unknown target ABI 'ilp32' make[3]: *** [arch/arm64/kernel/vdso-ilp32/Makefile:87: arch/arm64/kernel/vdso-ilp32/note-ilp32.o] Error 1 make[3]: *** [arch/arm64/kernel/vdso-ilp32/Makefile:90: arch/arm64/kernel/vdso-ilp32/sigreturn-ilp32.o] Error 1 make[3]: Target 'include/generated/vdso-ilp32-offsets.h' not remade because of errors. make[2]: *** [arch/arm64/Makefile:201: vdso_prepare] Error 2 make[2]: Target 'prepare' not remade because of errors. make[1]: *** [Makefile:234: __sub-make] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:234: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3541/3541] kernel/livepatch/core.c:1689:12: warning: no previous prototype for function 'arch_klp_check_activeness_func'
by kernel test robot 15 Dec '25

15 Dec '25

Hi Zheng, First bad commit (maybe != root cause): tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: cd9eb9b4365b71652b2c2ac58293bea47c9f9302 commit: 8c7d888bedbc3642dcfa0ae682bb9fb2337de170 [3541/3541] livepatch/arm64: Support livepatch without ftrace config: arm64-randconfig-001-20251212 (https://download.01.org/0day-ci/archive/20251215/202512150123.LJIfaupb-lkp@…) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512150123.LJIfaupb-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512150123.LJIfaupb-lkp@intel.com/ All warnings (new ones prefixed by >>): >> kernel/livepatch/core.c:1689:12: warning: no previous prototype for function 'arch_klp_check_activeness_func' [-Wmissing-prototypes] 1689 | int __weak arch_klp_check_activeness_func(struct klp_func *func, int enable, | ^ kernel/livepatch/core.c:1689:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1689 | int __weak arch_klp_check_activeness_func(struct klp_func *func, int enable, | ^ | static >> kernel/livepatch/core.c:1913:14: warning: no previous prototype for function 'arch_klp_mem_alloc' [-Wmissing-prototypes] 1913 | void __weak *arch_klp_mem_alloc(size_t size) | ^ kernel/livepatch/core.c:1913:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1913 | void __weak *arch_klp_mem_alloc(size_t size) | ^ | static >> kernel/livepatch/core.c:1918:13: warning: no previous prototype for function 'arch_klp_mem_free' [-Wmissing-prototypes] 1918 | void __weak arch_klp_mem_free(void *mem) | ^ kernel/livepatch/core.c:1918:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1918 | void __weak arch_klp_mem_free(void *mem) | ^ | static >> kernel/livepatch/core.c:1923:13: warning: no previous prototype for function 'arch_klp_code_modify_prepare' [-Wmissing-prototypes] 1923 | void __weak arch_klp_code_modify_prepare(void) | ^ kernel/livepatch/core.c:1923:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1923 | void __weak arch_klp_code_modify_prepare(void) | ^ | static >> kernel/livepatch/core.c:1927:13: warning: no previous prototype for function 'arch_klp_code_modify_post_process' [-Wmissing-prototypes] 1927 | void __weak arch_klp_code_modify_post_process(void) | ^ kernel/livepatch/core.c:1927:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1927 | void __weak arch_klp_code_modify_post_process(void) | ^ | static 5 warnings generated. vim +/arch_klp_check_activeness_func +1689 kernel/livepatch/core.c 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1688 583e6e55fb6aa19 Zheng Yejian 2023-12-23 @1689 int __weak arch_klp_check_activeness_func(struct klp_func *func, int enable, 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1690 klp_add_func_t add_func, 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1691 struct list_head *func_list) 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1692 { 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1693 int ret; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1694 unsigned long func_addr = 0; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1695 unsigned long func_size; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1696 struct klp_func_node *func_node = NULL; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1697 unsigned long old_func = (unsigned long)func->old_func; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1698 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1699 func_node = func->func_node; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1700 /* Check func address in stack */ 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1701 if (enable) { 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1702 if (func->patched || func->force == KLP_ENFORCEMENT) 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1703 return 0; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1704 /* 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1705 * When enable, checking the currently active functions. 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1706 */ 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1707 if (list_empty(&func_node->func_stack)) { 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1708 /* 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1709 * Not patched on this function [the origin one] 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1710 */ 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1711 func_addr = old_func; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1712 func_size = func->old_size; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1713 } else { 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1714 /* 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1715 * Previously patched function [the active one] 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1716 */ 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1717 struct klp_func *prev; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1718 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1719 prev = list_first_or_null_rcu(&func_node->func_stack, 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1720 struct klp_func, stack_node); 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1721 func_addr = (unsigned long)prev->new_func; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1722 func_size = prev->new_size; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1723 } 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1724 /* 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1725 * When preemption is disabled and the replacement area 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1726 * does not contain a jump instruction, the migration 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1727 * thread is scheduled to run stop machine only after the 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1728 * execution of instructions to be replaced is complete. 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1729 */ 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1730 if (IS_ENABLED(CONFIG_PREEMPTION) || 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1731 (func->force == KLP_NORMAL_FORCE) || 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1732 arch_check_jump_insn(func_addr)) { 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1733 ret = add_func(func_list, func_addr, func_size, 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1734 func->old_name, func->force); 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1735 if (ret) 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1736 return ret; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1737 if (func_addr != old_func) { 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1738 ret = add_func(func_list, old_func, KLP_MAX_REPLACE_SIZE, 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1739 func->old_name, func->force); 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1740 if (ret) 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1741 return ret; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1742 } 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1743 } 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1744 } else { 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1745 #ifdef CONFIG_PREEMPTION 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1746 /* 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1747 * No scheduling point in the replacement instructions. Therefore, 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1748 * when preemption is not enabled, atomic execution is performed 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1749 * and these instructions will not appear on the stack. 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1750 */ 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1751 if (list_is_singular(&func_node->func_stack)) { 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1752 func_addr = old_func; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1753 func_size = func->old_size; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1754 } else { 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1755 struct klp_func *prev; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1756 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1757 prev = list_first_or_null_rcu( 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1758 &func_node->func_stack, 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1759 struct klp_func, stack_node); 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1760 func_addr = (unsigned long)prev->new_func; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1761 func_size = prev->new_size; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1762 } 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1763 ret = add_func(func_list, func_addr, 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1764 func_size, func->old_name, 0); 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1765 if (ret) 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1766 return ret; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1767 if (func_addr != old_func) { 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1768 ret = add_func(func_list, old_func, KLP_MAX_REPLACE_SIZE, 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1769 func->old_name, 0); 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1770 if (ret) 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1771 return ret; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1772 } 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1773 #endif 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1774 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1775 func_addr = (unsigned long)func->new_func; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1776 func_size = func->new_size; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1777 ret = add_func(func_list, func_addr, 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1778 func_size, func->old_name, 0); 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1779 if (ret) 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1780 return ret; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1781 } 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1782 return 0; 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1783 } 583e6e55fb6aa19 Zheng Yejian 2023-12-23 1784 :::::: The code at line 1689 was first introduced by commit :::::: 583e6e55fb6aa193b1a82909069e8028c5d5653d livepatch/x86: Support livepatch without ftrace :::::: TO: Zheng Yejian <zhengyejian1(a)huawei.com> :::::: CC: Zheng Yejian <zhengyejian1(a)huawei.com> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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