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[PATCH OLK-6.6 00/32] mm: page_alloc: freelist migratetype hygiene
by Jinjiang Tu 02 Sep '25

02 Sep '25

Brendan Jackman (2): mm/page_alloc: clarify terminology in migratetype fallback code mm/page_alloc: clarify should_claim_block() commentary David Hildenbrand (5): mm/page_isolation: don't pass gfp flags to isolate_single_pageblock() mm/page_alloc: make __alloc_contig_migrate_range() static mm/page_alloc: sort out the alloc_contig_range() gfp flags mess mm/page_alloc: forward the gfp flags from alloc_contig_range() to post_alloc_hook() mm/page_alloc: don't call pfn_to_page() on possibly non-existent PFN in split_large_buddy() Huan Yang (1): mm: page_alloc: simpify page del and expand Jinjiang Tu (1): mm: page_alloc: don't steal single pages from biggest buddy Johannes Weiner (13): mm: page_alloc: remove pcppage migratetype caching mm: page_alloc: optimize free_unref_folios() mm: page_alloc: fix up block types when merging compatible blocks mm: page_alloc: move free pages when converting block during isolation mm: page_alloc: fix move_freepages_block() range error mm: page_alloc: fix freelist movement during block conversion mm: page_alloc: close migratetype race between freeing and stealing mm: page_isolation: prepare for hygienic freelists mm: page_alloc: consolidate free page accounting mm: page_alloc: batch vmstat updates in expand() mm: page_alloc: fix highatomic typing in multi-block buddies mm: page_alloc: remove remnants of unlocked migratetype updates mm: page_alloc: speed up fallbacks in rmqueue_bulk() Kefeng Wang (1): mm: remove migration for HugePage in isolate_single_pageblock() Kemeng Shi (2): mm/page_alloc: remove unnecessary check in break_down_buddy_pages mm/page_alloc: remove unnecessary next_page in break_down_buddy_pages Luoxi Li (1): mm: remove unused has_isolate_pageblock Vlastimil Babka (1): mm: page_alloc: change move_freepages() to __move_freepages_block() Yajun Deng (1): mm: page_alloc: simplify __free_pages_ok() Yu Zhao (2): mm/page_alloc: keep track of free highatomic mm/contig_alloc: support __GFP_COMP Zi Yan (1): mm: page_alloc: set migratetype inside move_freepages() gaoxiang17 (1): mm/page_alloc: add some detailed comments in can_steal_fallback include/linux/gfp.h | 21 + include/linux/mm.h | 18 +- include/linux/mmzone.h | 2 +- include/linux/page-isolation.h | 13 +- include/linux/vmstat.h | 8 - mm/compaction.c | 45 +- mm/debug_page_alloc.c | 12 +- mm/internal.h | 15 +- mm/page_alloc.c | 1071 +++++++++++++++++++------------- mm/page_isolation.c | 143 ++--- 10 files changed, 731 insertions(+), 617 deletions(-) -- 2.43.0

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[PATCH OLK-6.6] sdei_watchdog: add percpu flag to fix sdei watchdog state in lpi mode
by Bowen You 02 Sep '25

02 Sep '25

From: youbowen <youbowen2(a)huawei.com> hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8LQCC CVE: NA ------------------------------------------------- /proc/sys/kernel/nmi_watchdog interface is designed to close nmi watchdog, but currently, it's not working when in low power scenario, since pm callback will enable/disable event when power state changes. This commit add a percpu flag to be compatible with pm callback. Fixes: f022c4cac9c1 ("sdei_watchdog: use lockup_detector_retry_init() to init sdei watchdog") Signed-off-by: Bowen You <youbowen2(a)huawei.com> --- arch/arm64/kernel/watchdog_sdei.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/arch/arm64/kernel/watchdog_sdei.c b/arch/arm64/kernel/watchdog_sdei.c index 19f47e24fa59..d8019becf10d 100644 --- a/arch/arm64/kernel/watchdog_sdei.c +++ b/arch/arm64/kernel/watchdog_sdei.c @@ -25,6 +25,7 @@ static int sdei_watchdog_event_num; bool disable_sdei_nmi_watchdog; static bool sdei_watchdog_registered; static DEFINE_PER_CPU(ktime_t, last_check_time); +static DEFINE_PER_CPU(bool, sdei_usr_en); void sdei_watchdog_hardlockup_enable(unsigned int cpu) { @@ -44,6 +45,7 @@ void sdei_watchdog_hardlockup_enable(unsigned int cpu) pr_err("Enable NMI Watchdog failed on cpu%d\n", smp_processor_id()); } + __this_cpu_write(sdei_usr_en, 1); } void sdei_watchdog_hardlockup_disable(unsigned int cpu) @@ -54,6 +56,7 @@ void sdei_watchdog_hardlockup_disable(unsigned int cpu) return; ret = sdei_api_event_disable(sdei_watchdog_event_num); + __this_cpu_write(sdei_usr_en, 0); if (ret) pr_err("Disable NMI Watchdog failed on cpu%d\n", smp_processor_id()); @@ -110,16 +113,18 @@ void sdei_watchdog_clear_eoi(void) static int sdei_watchdog_pm_notifier(struct notifier_block *nb, unsigned long action, void *data) { - int rv; + int rv = 0; WARN_ON_ONCE(preemptible()); switch (action) { case CPU_PM_ENTER: - rv = sdei_api_event_disable(sdei_watchdog_event_num); + if (per_cpu(sdei_usr_en, smp_processor_id())) + rv = sdei_api_event_disable(sdei_watchdog_event_num); break; case CPU_PM_EXIT: - rv = sdei_api_event_enable(sdei_watchdog_event_num); + if (per_cpu(sdei_usr_en, smp_processor_id())) + rv = sdei_api_event_enable(sdei_watchdog_event_num); break; default: return NOTIFY_DONE; -- 2.34.1

2 1

[PATCH OLK-6.6 v3] arm64: Fix actlr_el1 can not set problem in guest
by Jinjie Ruan 02 Sep '25

02 Sep '25

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/release-management/issues/IBV2E4 -------------------------------- During the initialization of the vCPU, the vcpu->arch.hcr_el2 is set to HCR_GUEST_FLAGS, which include HCR_TACR, and before a vCPU is scheduled onto a physical CPU, the contents of vcpu->arch.hcr_el2 will be writen into the physical hcr_el2 register, so regardless of whether the host has configured HCR_EL2, accessing ACTLR_EL1 in the guest virtual machine will trap to EL2. However, the current implementation of KVM ignores writes to ACTLR_EL1, so it is currently not possible to set this register in guest, hardware xcall/xint can not take effect anyway. So modify the state of actlr_el1 based on the written value in access_actlr(), which can only affect the virtual register values seen by the virtual machine. Considering that a vCPU may be scheduled on a physical CPU, the value of the vCPU's ACTLR_EL1 register should be loaded into the physical ACTLR_EL1 register before the vCPU is scheduled onto the physical CPU. Conversely, when the vCPU is descheduled from the physical CPU, the original value of the physical ACTLR_EL1 register should be restored. Fixes: 7f2e02718bba ("arm64: entry: Support hardware xcall and xint") Signed-off-by: Jinjie Ruan <ruanjinjie(a)huawei.com> --- arch/arm64/kernel/cpufeature.c | 4 ---- arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h | 6 ++++++ arch/arm64/kvm/sys_regs.c | 12 +++++++++++- 3 files changed, 17 insertions(+), 5 deletions(-) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index b26bdaae6e2f..37a7c9412889 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -2522,10 +2522,6 @@ static void cpu_enable_arch_xcall_xint(const struct arm64_cpu_capabilities *__un el = read_sysreg(CurrentEL); if (el == CurrentEL_EL2) { - /* - * Enable EL2 trap when access ACTLR_EL1 in guest kernel. - */ - write_sysreg_s(read_sysreg_s(SYS_HCR_EL2) | HCR_TACR, SYS_HCR_EL2); actlr_el2 = read_sysreg(actlr_el2); actlr_el2 |= ACTLR_ELx_XINT; write_sysreg(actlr_el2, actlr_el2); diff --git a/arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h b/arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h index d6cfb3dc7f7c..595ebff1de9f 100644 --- a/arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h +++ b/arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h @@ -20,6 +20,9 @@ static inline void __sysreg_save_common_state(struct kvm_cpu_context *ctxt) { ctxt_sys_reg(ctxt, MDSCR_EL1) = read_sysreg(mdscr_el1); +#ifdef CONFIG_ACTLR_XCALL_XINT + ctxt_sys_reg(ctxt, ACTLR_EL1) = read_sysreg(actlr_el1); +#endif } static inline void __sysreg_save_user_state(struct kvm_cpu_context *ctxt) @@ -90,6 +93,9 @@ static inline void __sysreg_save_el2_return_state(struct kvm_cpu_context *ctxt) static inline void __sysreg_restore_common_state(struct kvm_cpu_context *ctxt) { write_sysreg(ctxt_sys_reg(ctxt, MDSCR_EL1), mdscr_el1); +#ifdef CONFIG_ACTLR_XCALL_XINT + write_sysreg(ctxt_sys_reg(ctxt, ACTLR_EL1), actlr_el1); +#endif } static inline void __sysreg_restore_user_state(struct kvm_cpu_context *ctxt) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 8cd4c95759a0..6d8b4bec4e93 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -279,10 +279,20 @@ static bool access_actlr(struct kvm_vcpu *vcpu, struct sys_reg_params *p, const struct sys_reg_desc *r) { - u64 mask, shift; + u64 mask, shift, val; +#ifdef CONFIG_ACTLR_XCALL_XINT + if (p->is_write) { + val = vcpu_read_sys_reg(vcpu, r->reg); + val &= ~(ACTLR_ELx_XCALL | ACTLR_ELx_XINT); + val |= (p->regval & (ACTLR_ELx_XCALL | ACTLR_ELx_XINT)); + vcpu_write_sys_reg(vcpu, val, r->reg); + return true; + } +#else if (p->is_write) return ignore_write(vcpu, p); +#endif get_access_mask(r, &mask, &shift); p->regval = (vcpu_read_sys_reg(vcpu, r->reg) & mask) >> shift; -- 2.34.1

2 1

[PATCH OLK-5.10] [Backport] cpufreq: Init policy->rwsem before it may be possibly used
by Xinyu Zheng 02 Sep '25

02 Sep '25

From: Lifeng Zheng <zhenglifeng1(a)huawei.com> mainline inclusion from mainline-v6.17-rc1 commit d1378d1d7edb3a4c4935a44fe834ae135be03564 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/ICVWGC Reference: https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/comm… ---------------------------------------------------------------------- In cpufreq_policy_put_kobj(), policy->rwsem is used. But in cpufreq_policy_alloc(), if freq_qos_add_notifier() returns an error, error path via err_kobj_remove or err_min_qos_notifier will be reached and cpufreq_policy_put_kobj() will be called before policy->rwsem is initialized. Thus, the calling of init_rwsem() should be moved to where before these two error paths can be reached. Fixes: 67d874c3b2c6 ("cpufreq: Register notifiers with the PM QoS framework") Signed-off-by: Lifeng Zheng <zhenglifeng1(a)huawei.com> Link: https://patch.msgid.link/20250709104145.2348017-3-zhenglifeng1@huawei.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Signed-off-by: Xinyu Zheng <zhengxinyu6(a)huawei.com> --- drivers/cpufreq/cpufreq.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index ddeacb826f90..950e00dfd75d 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1229,6 +1229,8 @@ static struct cpufreq_policy *cpufreq_policy_alloc(unsigned int cpu) goto err_free_real_cpus; } + init_rwsem(&policy->rwsem); + freq_constraints_init(&policy->constraints); policy->nb_min.notifier_call = cpufreq_notifier_min; @@ -1251,7 +1253,6 @@ static struct cpufreq_policy *cpufreq_policy_alloc(unsigned int cpu) } INIT_LIST_HEAD(&policy->policy_list); - init_rwsem(&policy->rwsem); spin_lock_init(&policy->transition_lock); init_waitqueue_head(&policy->transition_wait); INIT_WORK(&policy->update, handle_update); -- 2.34.1

2 1

[PATCH OLK-6.6] sdei_watchdog: add percpu flag to fix sdei watchdog state in lpi mode
by Bowen You 02 Sep '25

02 Sep '25

From: youbowen <youbowen2(a)huawei.com> hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8LQCC CVE: NA ------------------------------------------------- /proc/sys/kernel/nmi_watchdog interface is designed to close nmi watchdog, but currently, it's not working when in low power scenario, since pm callback will enable/disable event when power state changes. This commit add a percpu flag to be compatible with pm callback. Fixes: f022c4cac9c1 ("sdei_watchdog: use lockup_detector_retry_init() to init sdei watchdog") Signed-off-by: Bowen You <youbowen2(a)huawei.com> --- arch/arm64/kernel/watchdog_sdei.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kernel/watchdog_sdei.c b/arch/arm64/kernel/watchdog_sdei.c index 19f47e24fa59..87d97aace5b3 100644 --- a/arch/arm64/kernel/watchdog_sdei.c +++ b/arch/arm64/kernel/watchdog_sdei.c @@ -25,6 +25,7 @@ static int sdei_watchdog_event_num; bool disable_sdei_nmi_watchdog; static bool sdei_watchdog_registered; static DEFINE_PER_CPU(ktime_t, last_check_time); +static DEFINE_PER_CPU(bool, sdei_usr_en); void sdei_watchdog_hardlockup_enable(unsigned int cpu) { @@ -44,6 +45,7 @@ void sdei_watchdog_hardlockup_enable(unsigned int cpu) pr_err("Enable NMI Watchdog failed on cpu%d\n", smp_processor_id()); } + __this_cpu_write(sdei_usr_en, 1); } void sdei_watchdog_hardlockup_disable(unsigned int cpu) @@ -54,6 +56,7 @@ void sdei_watchdog_hardlockup_disable(unsigned int cpu) return; ret = sdei_api_event_disable(sdei_watchdog_event_num); + __this_cpu_write(sdei_usr_en, 0); if (ret) pr_err("Disable NMI Watchdog failed on cpu%d\n", smp_processor_id()); @@ -116,10 +119,12 @@ static int sdei_watchdog_pm_notifier(struct notifier_block *nb, switch (action) { case CPU_PM_ENTER: - rv = sdei_api_event_disable(sdei_watchdog_event_num); + if (per_cpu(sdei_usr_en, smp_processor_id())) + rv = sdei_api_event_disable(sdei_watchdog_event_num); break; case CPU_PM_EXIT: - rv = sdei_api_event_enable(sdei_watchdog_event_num); + if (per_cpu(sdei_usr_en, smp_processor_id())) + rv = sdei_api_event_enable(sdei_watchdog_event_num); break; default: return NOTIFY_DONE; -- 2.34.1

2 1

[PATCH OLK-6.6 0/5] CVE-2025-38502
by Xiaomeng Zhang 02 Sep '25

02 Sep '25

Daniel Borkmann (4): bpf: Add cookie object to bpf maps bpf: Move bpf map owner out of common struct bpf: Move cgroup iterator helpers to bpf.h bpf: Fix oob access in cgroup local storage Xiaomeng Zhang (1): Fix kabi breakage for bpf_map by using KABI_BROKEN_REPLACE and KABI_FILL_HOLE. include/linux/bpf-cgroup.h | 5 ---- include/linux/bpf.h | 56 ++++++++++++++++++++++++++++---------- kernel/bpf/core.c | 50 ++++++++++++++++++++++------------ kernel/bpf/syscall.c | 19 +++++++++---- 4 files changed, 88 insertions(+), 42 deletions(-) -- 2.34.1

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[PATCH OLK-6.6 0/5] CVE-2025-38502
by Xiaomeng Zhang 02 Sep '25

02 Sep '25

Daniel Borkmann (4): bpf: Add cookie object to bpf maps bpf: Move bpf map owner out of common struct bpf: Move cgroup iterator helpers to bpf.h bpf: Fix oob access in cgroup local storage Xiaomeng Zhang (1): Fix kabi breakage for bpf_map by using KABI_BROKEN_REPLACE and KABI_FILL_HOLE. include/linux/bpf-cgroup.h | 5 ---- include/linux/bpf.h | 56 ++++++++++++++++++++++++++++---------- kernel/bpf/core.c | 50 ++++++++++++++++++++++------------ kernel/bpf/syscall.c | 19 +++++++++---- 4 files changed, 88 insertions(+), 42 deletions(-) -- 2.34.1

2 6

[openeuler:openEuler-1.0-LTS] BUILD REGRESSION 54968bf23106d2ac31ede8dca013a7fadeb3dd75
by kernel test robot 02 Sep '25

02 Sep '25

tree/branch: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS branch HEAD: 54968bf23106d2ac31ede8dca013a7fadeb3dd75 !17822 iwlwifi: Add missing check for alloc_ordered_workqueue Error/Warning (recently discovered and may have been fixed): https://lore.kernel.org/oe-kbuild-all/202508070154.VYnxHXi4-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202508070349.2ODYAkPf-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202508070424.1zkCZb3G-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202508301637.4sfu6N2M-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202509020104.GWuHy81V-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202509020546.DO94LENh-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202509020919.PwhZw5yj-lkp@intel.com block/bio-integrity.c:41:6: warning: no previous prototype for function '__bio_integrity_free' [-Wmissing-prototypes] block/blk-cgroup.c:1843: warning: Function parameter or member 'q' not described in 'blkcg_schedule_throttle' block/blk-cgroup.c:1843: warning: Function parameter or member 'use_memdelay' not described in 'blkcg_schedule_throttle' block/blk-cgroup.c:1868: warning: Function parameter or member 'blkg' not described in 'blkcg_add_delay' block/blk-cgroup.c:1868: warning: Function parameter or member 'delta' not described in 'blkcg_add_delay' block/blk-cgroup.c:1868: warning: Function parameter or member 'now' not described in 'blkcg_add_delay' block/blk-mq-sched.c:220:5: warning: no previous prototype for function '__blk_mq_sched_dispatch_requests' [-Wmissing-prototypes] block/genhd.c:642:5: warning: no previous prototype for function 'disk_scan_partitions' [-Wmissing-prototypes] crypto/.tmp_zstd.o: warning: objtool: missing symbol for section .init.text crypto/sm4_generic.o: warning: objtool: missing symbol for section .text drivers/spi/spi-phytium-plat.c:192:36: warning: unused variable 'phytium_spi_acpi_match' [-Wunused-const-variable] include/linux/mempolicy.h:329:13: warning: '__do_mbind' defined but not used [-Wunused-function] include/linux/uaccess.h:112:17: warning: 'cap' may be used uninitialized [-Wmaybe-uninitialized] mm/.tmp_ioremap.o: warning: objtool: missing symbol for section .text mm/khugepaged.c:1387: warning: Function parameter or member 'reliable' not described in 'collapse_shmem' mm/maccess.c:64:6: warning: no previous prototype for function '__probe_user_read' [-Wmissing-prototypes] mm/maccess.c:85:6: warning: no previous prototype for function '__probe_user_read' [-Wmissing-prototypes] mm/vmscan.c:3257:21: error: implicit declaration of function 'kernel_swap_enabled' [-Werror,-Wimplicit-function-declaration] mm/vmscan.c:3257:21: error: implicit declaration of function 'kernel_swap_enabled'; did you mean 'kernfs_ns_enabled'? [-Werror=implicit-function-declaration] Unverified Error/Warning (likely false positive, kindly check if interested): include/linux/printk.h:346:9: warning: this statement may fall through [-Wimplicit-fallthrough=] include/linux/uaccess.h:112:17: warning: 'addr' may be used uninitialized [-Wmaybe-uninitialized] include/linux/uaccess.h:112:17: warning: 'attr' may be used uninitialized [-Wmaybe-uninitialized] include/linux/uaccess.h:112:17: warning: 'cd' may be used uninitialized [-Wmaybe-uninitialized] include/linux/uaccess.h:112:17: warning: 'irq_event' may be used uninitialized [-Wmaybe-uninitialized] include/linux/uaccess.h:112:17: warning: 'kvm_userspace_mem' may be used uninitialized [-Wmaybe-uninitialized] include/linux/uaccess.h:112:17: warning: 'log' may be used uninitialized [-Wmaybe-uninitialized] include/linux/uaccess.h:112:17: warning: 'msi' may be used uninitialized [-Wmaybe-uninitialized] include/linux/uaccess.h:112:17: warning: 'routing' may be used uninitialized [-Wmaybe-uninitialized] include/linux/uaccess.h:112:17: warning: 'zone' may be used uninitialized [-Wmaybe-uninitialized] Error/Warning ids grouped by kconfigs: recent_errors |-- arm64-allmodconfig | |-- block-blk-cgroup.c:warning:Function-parameter-or-member-blkg-not-described-in-blkcg_add_delay | |-- block-blk-cgroup.c:warning:Function-parameter-or-member-delta-not-described-in-blkcg_add_delay | |-- block-blk-cgroup.c:warning:Function-parameter-or-member-now-not-described-in-blkcg_add_delay | |-- block-blk-cgroup.c:warning:Function-parameter-or-member-q-not-described-in-blkcg_schedule_throttle | |-- block-blk-cgroup.c:warning:Function-parameter-or-member-use_memdelay-not-described-in-blkcg_schedule_throttle | |-- block-blk-io-hierarchy-iodump.c:warning:no-previous-prototype-for-__bio_stage_hierarchy_start | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- init-calibrate.c:warning:no-previous-prototype-for-calibration_delay_done | |-- mm-khugepaged.c:warning:Function-parameter-or-member-reliable-not-described-in-collapse_shmem | |-- mm-memcontrol.c:warning:bad-line:otherwise. | `-- mm-rodata_test.c:warning:no-previous-prototype-for-rodata_test |-- arm64-allnoconfig | |-- include-linux-list.h:warning:storing-the-address-of-local-variable-wait-in-((struct-list_head-)x)-.prev | |-- include-linux-list.h:warning:storing-the-address-of-local-variable-waiter-in-(struct-list_head-)((char-)sem-).prev | |-- include-linux-mempolicy.h:warning:__do_mbind-defined-but-not-used | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- init-calibrate.c:warning:no-previous-prototype-for-calibration_delay_done | |-- mm-memory.c:error:implicit-declaration-of-function-hugetlb_insert_hugepage_pte_by_pa | |-- mm-rmap.c:warning:no-previous-prototype-for-is_vma_temporary_stack | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled |-- arm64-randconfig-001-20250705 | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled |-- arm64-randconfig-001-20250714 | |-- include-linux-uaccess.h:warning:addr-may-be-used-uninitialized | |-- include-linux-uaccess.h:warning:attr-may-be-used-uninitialized | |-- include-linux-uaccess.h:warning:cap-may-be-used-uninitialized | |-- include-linux-uaccess.h:warning:cd-may-be-used-uninitialized | |-- include-linux-uaccess.h:warning:irq_event-may-be-used-uninitialized | |-- include-linux-uaccess.h:warning:kvm_userspace_mem-may-be-used-uninitialized | |-- include-linux-uaccess.h:warning:log-may-be-used-uninitialized | |-- include-linux-uaccess.h:warning:msi-may-be-used-uninitialized | |-- include-linux-uaccess.h:warning:routing-may-be-used-uninitialized | `-- include-linux-uaccess.h:warning:zone-may-be-used-uninitialized |-- arm64-randconfig-002-20250901 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- include-linux-list.h:warning:storing-the-address-of-local-variable-waiter-in-(struct-list_head-)((char-)sem-).prev | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- init-calibrate.c:warning:no-previous-prototype-for-calibration_delay_done | |-- mm-memory.c:error:implicit-declaration-of-function-hugetlb_insert_hugepage_pte_by_pa | |-- mm-rmap.c:warning:no-previous-prototype-for-is_vma_temporary_stack | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | |-- mm-rodata_test.c:warning:no-previous-prototype-for-rodata_test | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled |-- arm64-randconfig-003-20250901 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- init-calibrate.c:warning:no-previous-prototype-for-calibration_delay_done | |-- mm-memory.c:error:implicit-declaration-of-function-hugetlb_insert_hugepage_pte_by_pa | |-- mm-rmap.c:warning:no-previous-prototype-for-is_vma_temporary_stack | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled |-- arm64-randconfig-r121-20250729 | |-- mm-mem_reliable.c:sparse:sparse:invalid-assignment: | |-- mm-mem_reliable.c:sparse:sparse:symbol-reliable_debug_handler-was-not-declared.-Should-it-be-static | |-- mm-mem_reliable.c:sparse:sparse:symbol-reliable_limit_handler-was-not-declared.-Should-it-be-static | |-- mm-mem_reliable.c:sparse:sparse:symbol-reliable_pagecache_max_bytes_write-was-not-declared.-Should-it-be-static | `-- mm-page_alloc.c:sparse:sparse:incorrect-type-in-argument-(different-base-types)-expected-restricted-gfp_t-usertype-flags-got-unsigned-int |-- x86_64-allnoconfig | |-- mm-maccess.c:warning:no-previous-prototype-for-function-__probe_user_read | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-allyesconfig | |-- block-bio-integrity.c:warning:no-previous-prototype-for-function-__bio_integrity_free | |-- block-blk-cgroup.c:warning:Function-parameter-or-member-blkg-not-described-in-blkcg_add_delay | |-- block-blk-cgroup.c:warning:Function-parameter-or-member-delta-not-described-in-blkcg_add_delay | |-- block-blk-cgroup.c:warning:Function-parameter-or-member-now-not-described-in-blkcg_add_delay | |-- block-blk-cgroup.c:warning:Function-parameter-or-member-q-not-described-in-blkcg_schedule_throttle | |-- block-blk-cgroup.c:warning:Function-parameter-or-member-use_memdelay-not-described-in-blkcg_schedule_throttle | |-- block-blk-mq-sched.c:warning:no-previous-prototype-for-function-__blk_mq_sched_dispatch_requests | |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_issue | |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_requeue | |-- block-genhd.c:warning:no-previous-prototype-for-function-disk_scan_partitions | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-khugepaged.c:warning:Function-parameter-or-member-reliable-not-described-in-collapse_shmem | |-- mm-maccess.c:warning:no-previous-prototype-for-function-__probe_user_read | |-- mm-memcontrol.c:warning:bad-line:otherwise. | `-- mm-rmap.c:warning:variable-cstart-set-but-not-used |-- x86_64-buildonly-randconfig-001-20250718 | `-- drivers-spi-spi-phytium-plat.c:warning:unused-variable-phytium_spi_acpi_match |-- x86_64-buildonly-randconfig-001-20250902 | |-- block-bio-integrity.c:warning:no-previous-prototype-for-function-__bio_integrity_free | |-- block-blk-mq-sched.c:warning:no-previous-prototype-for-function-__blk_mq_sched_dispatch_requests | |-- block-genhd.c:warning:no-previous-prototype-for-function-disk_scan_partitions | |-- crypto-.tmp_zstd.o:warning:objtool:missing-symbol-for-section-.init.text | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-.tmp_ioremap.o:warning:objtool:missing-symbol-for-section-.text | |-- mm-khugepaged.c:warning:Function-parameter-or-member-reliable-not-described-in-collapse_shmem | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-buildonly-randconfig-002-20250902 | |-- block-bfq-cgroup.o:warning:objtool:missing-symbol-for-section-.text | |-- block-bio-integrity.c:warning:no-previous-prototype-for-function-__bio_integrity_free | |-- block-blk-mq-sched.c:warning:no-previous-prototype-for-function-__blk_mq_sched_dispatch_requests | |-- block-genhd.c:warning:no-previous-prototype-for-function-disk_scan_partitions | |-- block-partitions-check.o:warning:objtool:missing-symbol-for-section-.text | |-- block-scsi_ioctl.o:warning:objtool:missing-symbol-for-section-.text | |-- crypto-sm4_generic.o:warning:objtool:missing-symbol-for-section-.text | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool | |-- mm-khugepaged.c:warning:Function-parameter-or-member-reliable-not-described-in-collapse_shmem | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-memcontrol.o:warning:objtool:missing-symbol-for-section-.text.unlikely. | |-- mm-page_owner.o:warning:objtool:missing-symbol-for-section-.text.unlikely. | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-rodata_test.o:warning:objtool:missing-symbol-for-section-.text |-- x86_64-buildonly-randconfig-003-20250902 | |-- block-bio-integrity.c:warning:no-previous-prototype-for-function-__bio_integrity_free | |-- block-blk-mq-sched.c:warning:no-previous-prototype-for-function-__blk_mq_sched_dispatch_requests | |-- block-genhd.c:warning:no-previous-prototype-for-function-disk_scan_partitions | |-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-buildonly-randconfig-005-20241216 | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-defconfig | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- init-calibrate.c:warning:no-previous-prototype-for-calibration_delay_done | |-- mm-rmap.c:warning:no-previous-prototype-for-is_vma_temporary_stack | `-- mm-rmap.c:warning:variable-cstart-set-but-not-used |-- x86_64-kexec | |-- block-blk-cgroup.c:warning:Function-parameter-or-member-blkg-not-described-in-blkcg_add_delay | |-- block-blk-cgroup.c:warning:Function-parameter-or-member-delta-not-described-in-blkcg_add_delay | |-- block-blk-cgroup.c:warning:Function-parameter-or-member-now-not-described-in-blkcg_add_delay | |-- block-blk-cgroup.c:warning:Function-parameter-or-member-q-not-described-in-blkcg_schedule_throttle | |-- block-blk-cgroup.c:warning:Function-parameter-or-member-use_memdelay-not-described-in-blkcg_schedule_throttle | |-- block-blk-mq-sched.c:warning:no-previous-prototype-for-function-__blk_mq_sched_dispatch_requests | |-- block-genhd.c:warning:no-previous-prototype-for-function-disk_scan_partitions | |-- mm-khugepaged.c:warning:Function-parameter-or-member-reliable-not-described-in-collapse_shmem | |-- mm-maccess.c:warning:no-previous-prototype-for-function-__probe_user_read | |-- mm-memcontrol.c:warning:bad-line:otherwise. | `-- mm-rmap.c:warning:variable-cstart-set-but-not-used |-- x86_64-randconfig-103-20250219 | |-- kernel-sched-debug.c:error:no-member-named-nr_wakeups_force_preferred_cpus-in-struct-dyn_affinity_stats | `-- kernel-sched-debug.c:error:no-member-named-nr_wakeups_preferred_cpus-in-struct-dyn_affinity_stats `-- x86_64-rhel-9.4-rust |-- block-bio-integrity.c:warning:no-previous-prototype-for-function-__bio_integrity_free |-- block-blk-cgroup.c:warning:Function-parameter-or-member-blkg-not-described-in-blkcg_add_delay |-- block-blk-cgroup.c:warning:Function-parameter-or-member-delta-not-described-in-blkcg_add_delay |-- block-blk-cgroup.c:warning:Function-parameter-or-member-now-not-described-in-blkcg_add_delay |-- block-blk-cgroup.c:warning:Function-parameter-or-member-q-not-described-in-blkcg_schedule_throttle |-- block-blk-cgroup.c:warning:Function-parameter-or-member-use_memdelay-not-described-in-blkcg_schedule_throttle |-- block-blk-mq-sched.c:warning:no-previous-prototype-for-function-__blk_mq_sched_dispatch_requests |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_issue |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_requeue |-- block-genhd.c:warning:no-previous-prototype-for-function-disk_scan_partitions |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union |-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool |-- mm-khugepaged.c:warning:Function-parameter-or-member-reliable-not-described-in-collapse_shmem |-- mm-maccess.c:warning:no-previous-prototype-for-function-__probe_user_read |-- mm-memcontrol.c:warning:bad-line:otherwise. `-- mm-rmap.c:warning:variable-cstart-set-but-not-used elapsed time: 750m configs tested: 20 configs skipped: 122 tested configs: arm64 allmodconfig gcc-15.1.0 arm64 allnoconfig gcc-15.1.0 arm64 randconfig-001-20250901 gcc-5.5.0 arm64 randconfig-002-20250901 gcc-13.4.0 arm64 randconfig-003-20250901 gcc-9.5.0 arm64 randconfig-004-20250901 gcc-6.5.0 x86_64 allnoconfig clang-20 x86_64 allyesconfig clang-20 x86_64 buildonly-randconfig-001-20250902 clang-20 x86_64 buildonly-randconfig-002-20250902 clang-20 x86_64 buildonly-randconfig-003-20250902 clang-20 x86_64 buildonly-randconfig-004-20250902 gcc-12 x86_64 buildonly-randconfig-005-20250902 gcc-12 x86_64 buildonly-randconfig-006-20250902 gcc-12 x86_64 defconfig gcc-11 x86_64 kexec clang-20 x86_64 rhel-9.4 gcc-12 x86_64 rhel-9.4-func gcc-12 x86_64 rhel-9.4-kselftests gcc-12 x86_64 rhel-9.4-rust clang-22 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-6.6 00/32] mm: page_alloc: freelist migratetype hygiene
by Jinjiang Tu 02 Sep '25

02 Sep '25

Brendan Jackman (2): mm/page_alloc: clarify terminology in migratetype fallback code mm/page_alloc: clarify should_claim_block() commentary David Hildenbrand (5): mm/page_isolation: don't pass gfp flags to isolate_single_pageblock() mm/page_alloc: make __alloc_contig_migrate_range() static mm/page_alloc: sort out the alloc_contig_range() gfp flags mess mm/page_alloc: forward the gfp flags from alloc_contig_range() to post_alloc_hook() mm/page_alloc: don't call pfn_to_page() on possibly non-existent PFN in split_large_buddy() Huan Yang (1): mm: page_alloc: simpify page del and expand Jinjiang Tu (1): mm: page_alloc: don't steal single pages from biggest buddy Johannes Weiner (13): mm: page_alloc: remove pcppage migratetype caching mm: page_alloc: optimize free_unref_folios() mm: page_alloc: fix up block types when merging compatible blocks mm: page_alloc: move free pages when converting block during isolation mm: page_alloc: fix move_freepages_block() range error mm: page_alloc: fix freelist movement during block conversion mm: page_alloc: close migratetype race between freeing and stealing mm: page_isolation: prepare for hygienic freelists mm: page_alloc: consolidate free page accounting mm: page_alloc: batch vmstat updates in expand() mm: page_alloc: fix highatomic typing in multi-block buddies mm: page_alloc: remove remnants of unlocked migratetype updates mm: page_alloc: speed up fallbacks in rmqueue_bulk() Kefeng Wang (1): mm: remove migration for HugePage in isolate_single_pageblock() Kemeng Shi (2): mm/page_alloc: remove unnecessary check in break_down_buddy_pages mm/page_alloc: remove unnecessary next_page in break_down_buddy_pages Luoxi Li (1): mm: remove unused has_isolate_pageblock Vlastimil Babka (1): mm: page_alloc: change move_freepages() to __move_freepages_block() Yajun Deng (1): mm: page_alloc: simplify __free_pages_ok() Yu Zhao (2): mm/page_alloc: keep track of free highatomic mm/contig_alloc: support __GFP_COMP Zi Yan (1): mm: page_alloc: set migratetype inside move_freepages() gaoxiang17 (1): mm/page_alloc: add some detailed comments in can_steal_fallback include/linux/gfp.h | 21 + include/linux/mm.h | 18 +- include/linux/mmzone.h | 2 +- include/linux/page-isolation.h | 13 +- include/linux/vmstat.h | 8 - mm/compaction.c | 45 +- mm/debug_page_alloc.c | 12 +- mm/internal.h | 15 +- mm/page_alloc.c | 1071 +++++++++++++++++++------------- mm/page_isolation.c | 143 ++--- 10 files changed, 731 insertions(+), 617 deletions(-) -- 2.43.0

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[openeuler:openEuler-1.0-LTS 1774/1774] mm/.tmp_ioremap.o: warning: objtool: missing symbol for section .text
by kernel test robot 02 Sep '25

02 Sep '25

Hi Nicholas, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 54968bf23106d2ac31ede8dca013a7fadeb3dd75 commit: 004cface9c1c0b6351473934a4ce452193e05b07 [1774/1774] mm: Move vmap_range from mm/ioremap.c to mm/vmalloc.c config: x86_64-buildonly-randconfig-001-20250902 (https://download.01.org/0day-ci/archive/20250902/202509020919.PwhZw5yj-lkp@…) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250902/202509020919.PwhZw5yj-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/202509020919.PwhZw5yj-lkp@intel.com/ All warnings (new ones prefixed by >>): >> mm/.tmp_ioremap.o: warning: objtool: missing symbol for section .text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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