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[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 +- 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

[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 +- 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+- 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 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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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[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

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[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

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