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[PATCH OLK-5.10] ftrace: Avoid potential division by zero in function_stat_show()
by Liu Chuang 17 Apr '25

17 Apr '25

From: Nikolay Kuratov <kniv(a)yandex-team.ru> stable inclusion from stable-v5.10.235 commit ca381f60a3bb7cfaa618d73ca411610bd7fc3149 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IBY43C Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit a1a7eb89ca0b89dc1c326eeee2596f263291aca3 upstream. Check whether denominator expression x * (x - 1) * 1000 mod {2^32, 2^64} produce zero and skip stddev computation in that case. For now don't care about rec->counter * rec->counter overflow because rec->time * rec->time overflow will likely happen earlier. Cc: stable(a)vger.kernel.org Cc: Wen Yang <wenyang(a)linux.alibaba.com> Cc: Mark Rutland <mark.rutland(a)arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Link: https://lore.kernel.org/20250206090156.1561783-1-kniv@yandex-team.ru Fixes: e31f7939c1c27 ("ftrace: Avoid potential division by zero in function profiler") Signed-off-by: Nikolay Kuratov <kniv(a)yandex-team.ru> Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Wang Hai <wanghai38(a)huawei.com> --- kernel/trace/ftrace.c | 27 ++++++++++++--------------- 1 file changed, 12 insertions(+), 15 deletions(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 923d78cc130c..095ba8ab36cf 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -510,6 +510,7 @@ static int function_stat_show(struct seq_file *m, void *v) static struct trace_seq s; unsigned long long avg; unsigned long long stddev; + unsigned long long stddev_denom; #endif mutex_lock(&ftrace_profile_lock); @@ -531,23 +532,19 @@ static int function_stat_show(struct seq_file *m, void *v) #ifdef CONFIG_FUNCTION_GRAPH_TRACER seq_puts(m, " "); - /* Sample standard deviation (s^2) */ - if (rec->counter <= 1) - stddev = 0; - else { - /* - * Apply Welford's method: - * s^2 = 1 / (n * (n-1)) * (n * \Sum (x_i)^2 - (\Sum x_i)^2) - */ + /* + * Variance formula: + * s^2 = 1 / (n * (n-1)) * (n * \Sum (x_i)^2 - (\Sum x_i)^2) + * Maybe Welford's method is better here? + * Divide only by 1000 for ns^2 -> us^2 conversion. + * trace_print_graph_duration will divide by 1000 again. + */ + stddev = 0; + stddev_denom = rec->counter * (rec->counter - 1) * 1000; + if (stddev_denom) { stddev = rec->counter * rec->time_squared - rec->time * rec->time; - - /* - * Divide only 1000 for ns^2 -> us^2 conversion. - * trace_print_graph_duration will divide 1000 again. - */ - stddev = div64_ul(stddev, - rec->counter * (rec->counter - 1) * 1000); + stddev = div64_ul(stddev, stddev_denom); } trace_seq_init(&s); -- 2.34.1

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[PATCH OLK-6.6 0/5] drm: LoongArch: fix rx550/gfx6/gfx7/gfx8 error
by Hongchen Zhang 17 Apr '25

17 Apr '25

Tianrui Zhao (3): drm/amdgpu: Fix pcie order dislocation drm/amdgpu: make duplicated EOP packet for GFX6 have real content drm/amdgpu: Fix RX550 pcie order dislocation. lvjianmin (2): drm/radeon: repeat the same EOP packet for EOP workaround on CIK drm/amdgpu: make duplicated EOP packet for GFX7/8 have real content drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 5 + drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c | 159 ++++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h | 6 + drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 4 + drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h | 3 + drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c | 19 +++ drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 13 +- drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 13 +- drivers/gpu/drm/radeon/cik.c | 9 +- 9 files changed, 216 insertions(+), 15 deletions(-) -- 2.33.0

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[PATCH OLK-6.6 0/2] soc cache: Add support for HiSilicon L3 cache
by Yushan Wang 17 Apr '25

17 Apr '25

driver inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IC15TR ---------------------------------------------------------------------- This series adds support for HiSilicon SoC cache lockdown and cache maintenance operations. Cache lockdown feature prevents cache entries from being evicted from L3 cache. It can be enabled by calling mmap function to the file (`/dev/hisi_soc_cache_mgmt`). This feature is implemented in the driver hisi_soc_l3c. Cache maintenance feature, following Arm64's CHI spec[1], enables users to raise certain transactions to the memory residing in the cache. This can be achieved by calling ioctl function to the same file as above. This feature is implemented in the driver hisi_soc_hha. L3 cache and L3 cache PMU share the same memory resource, which makes one fails to probe while another is on board. Since both devices rely on distinct information exported by ACPI, their probing functions should be unrelated. Workaround the resource conflict check by replacing devm_ioremap_resource() to devm_ioremap() instead. [1] https://developer.arm.com/documentation/ihi0050/latest/ Yushan Wang (2): soc cache: Add framework driver for HiSilicon SoC cache soc cache: Support cache maintenance for HiSilicon SoC Hydra Home Agent drivers/soc/hisilicon/Kconfig | 22 + drivers/soc/hisilicon/Makefile | 3 + .../soc/hisilicon/hisi_soc_cache_framework.c | 381 ++++++++++++++++++ .../soc/hisilicon/hisi_soc_cache_framework.h | 77 ++++ drivers/soc/hisilicon/hisi_soc_hha.c | 188 +++++++++ .../uapi/misc/hisi_soc_cache/hisi_soc_cache.h | 35 ++ 6 files changed, 706 insertions(+) create mode 100644 drivers/soc/hisilicon/hisi_soc_cache_framework.c create mode 100644 drivers/soc/hisilicon/hisi_soc_cache_framework.h create mode 100644 drivers/soc/hisilicon/hisi_soc_hha.c create mode 100644 include/uapi/misc/hisi_soc_cache/hisi_soc_cache.h -- 2.33.0

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[openeuler:OLK-6.6 2130/2130] arch/arm64/kvm/mmu.c:1665:21: warning: unused variable 'iss2'
by kernel test robot 17 Apr '25

17 Apr '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 58353f394bfe86212d5089bc9c1c235ffc761e2c commit: 8d2e1e3b26a99872309a1c2afa3f0f35f1102137 [2130/2130] arm64/config: add config to control whether enable HDBSS feature config: arm64-randconfig-001-20250417 (https://download.01.org/0day-ci/archive/20250417/202504170921.RaPjZtnT-lkp@…) compiler: aarch64-linux-gcc (GCC) 7.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250417/202504170921.RaPjZtnT-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/202504170921.RaPjZtnT-lkp@intel.com/ All warnings (new ones prefixed by >>): arch/arm64/kvm/mmu.c: In function 'kvm_handle_guest_abort': >> arch/arm64/kvm/mmu.c:1665:21: warning: unused variable 'iss2' [-Wunused-variable] unsigned long hva, iss2; ^~~~ -- arch/arm64/kvm/reset.c: In function 'kvm_arm_vcpu_destroy': >> arch/arm64/kvm/reset.c:165:15: warning: unused variable 'hdbss_pg' [-Wunused-variable] struct page *hdbss_pg; ^~~~~~~~ vim +/iss2 +1665 arch/arm64/kvm/mmu.c aeda9130c38e2e arch/arm/kvm/mmu.c Marc Zyngier 2015-03-12 1648 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1649 /** 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1650 * kvm_handle_guest_abort - handles all 2nd stage aborts 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1651 * @vcpu: the VCPU pointer 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1652 * 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1653 * Any abort that gets to the host is almost guaranteed to be caused by a 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1654 * missing second stage translation table entry, which can mean that either the 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1655 * guest simply needs more memory and we must allocate an appropriate page or it 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1656 * can mean that the guest tried to access I/O memory, which is emulated by user 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1657 * space. The distinction is based on the IPA causing the fault and whether this 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1658 * memory region has been registered as standard RAM by user space. 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1659 */ 74cc7e0c35c1e4 arch/arm64/kvm/mmu.c Tianjia Zhang 2020-06-23 1660 int kvm_handle_guest_abort(struct kvm_vcpu *vcpu) 342cd0ab0e6ca3 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1661 { 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1662 unsigned long fault_status; 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1663 phys_addr_t fault_ipa; 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1664 struct kvm_memory_slot *memslot; 6d60015590c3f5 arch/arm64/kvm/mmu.c eillon 2025-04-02 @1665 unsigned long hva, iss2; 98047888bb9fd5 arch/arm/kvm/mmu.c Christoffer Dall 2014-08-19 1666 bool is_iabt, write_fault, writable; 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1667 gfn_t gfn; 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1668 int ret, idx; 94f8e6418d3915 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 1669 621f48e40ee9b0 virt/kvm/arm/mmu.c Tyler Baicar 2017-06-21 1670 fault_status = kvm_vcpu_trap_get_fault_type(vcpu); 621f48e40ee9b0 virt/kvm/arm/mmu.c Tyler Baicar 2017-06-21 1671 621f48e40ee9b0 virt/kvm/arm/mmu.c Tyler Baicar 2017-06-21 1672 fault_ipa = kvm_vcpu_get_fault_ipa(vcpu); bb428921b777a5 virt/kvm/arm/mmu.c James Morse 2017-07-18 1673 is_iabt = kvm_vcpu_trap_is_iabt(vcpu); 621f48e40ee9b0 virt/kvm/arm/mmu.c Tyler Baicar 2017-06-21 1674 :::::: The code at line 1665 was first introduced by commit :::::: 6d60015590c3f56b0188b2409cfb3ad9e05ded00 arm64/kvm: support to handle the HDBSSF event :::::: TO: eillon <yezhenyu2(a)huawei.com> :::::: CC: Zhenyu Ye <yezhenyu2(a)huawei.com> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-5.10 2862/2862] fs/erofs/fscache.o: warning: objtool: erofs_fscache_release_page()+0x55: unreachable instruction
by kernel test robot 17 Apr '25

17 Apr '25

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 2affea8965688b8231cf977864ba7539320d5db8 commit: f18ca5e7c9d96c676424c3a36c121697e477ac20 [2862/2862] erofs: implement fscache-based metadata read config: x86_64-buildonly-randconfig-005-20250415 (https://download.01.org/0day-ci/archive/20250417/202504170830.iw6x6XXN-lkp@…) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250417/202504170830.iw6x6XXN-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/202504170830.iw6x6XXN-lkp@intel.com/ All warnings (new ones prefixed by >>): >> fs/erofs/fscache.o: warning: objtool: erofs_fscache_release_page()+0x55: unreachable instruction -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 2130/2130] kernel/sched/psi.c:1262:6: warning: 'psi_account_irqtime' defined but not used
by kernel test robot 17 Apr '25

17 Apr '25

Hi Lu, First bad commit (maybe != root cause): tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 58353f394bfe86212d5089bc9c1c235ffc761e2c commit: 654944510822988390470cbc5b6f914c19dd9b88 [2130/2130] sched/psi: add cpu fine grained stall tracking in pressure.stat config: arm64-randconfig-001-20250417 (https://download.01.org/0day-ci/archive/20250417/202504170110.nEONpqWt-lkp@…) compiler: aarch64-linux-gcc (GCC) 7.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250417/202504170110.nEONpqWt-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/202504170110.nEONpqWt-lkp@intel.com/ All warnings (new ones prefixed by >>): ^ include/linux/init.h:343:32: note: in definition of macro '__setup_param' = { __setup_str_##unique_id, fn, early } ^~ kernel/sched/autogroup.c:227:1: note: in expansion of macro '__setup' __setup("noautogroup", setup_autogroup); ^~~~~~~ kernel/sched/build_utility.c:110:0: error: expected declaration or statement at end of input #endif In file included from kernel/sched/build_utility.c:97:0: kernel/sched/build_utility.c: At top level: kernel/sched/psi.c:178:13: warning: 'psi_avgs_work' used but never defined static void psi_avgs_work(struct work_struct *work); ^~~~~~~~~~~~~ kernel/sched/psi.c:180:13: warning: 'poll_timer_fn' used but never defined static void poll_timer_fn(struct timer_list *t); ^~~~~~~~~~~~~ In file included from kernel/sched/build_utility.c:109:0: kernel/sched/autogroup.c:285:5: warning: 'autogroup_path' defined but not used [-Wunused-function] int autogroup_path(struct task_group *tg, char *buf, int buflen) ^~~~~~~~~~~~~~ kernel/sched/autogroup.c:269:6: warning: 'proc_sched_autogroup_show_task' defined but not used [-Wunused-function] void proc_sched_autogroup_show_task(struct task_struct *p, struct seq_file *m) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/sched/autogroup.c:231:5: warning: 'proc_sched_autogroup_set_nice' defined but not used [-Wunused-function] int proc_sched_autogroup_set_nice(struct task_struct *p, int nice) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/sched/autogroup.c:216:6: warning: 'sched_autogroup_exit' defined but not used [-Wunused-function] void sched_autogroup_exit(struct signal_struct *sig) ^~~~~~~~~~~~~~~~~~~~ kernel/sched/autogroup.c:211:6: warning: 'sched_autogroup_fork' defined but not used [-Wunused-function] void sched_autogroup_fork(struct signal_struct *sig) ^~~~~~~~~~~~~~~~~~~~ kernel/sched/autogroup.c:147:6: warning: 'sched_autogroup_exit_task' defined but not used [-Wunused-function] void sched_autogroup_exit_task(struct task_struct *p) ^~~~~~~~~~~~~~~~~~~~~~~~~ kernel/sched/autogroup.c:129:6: warning: 'task_wants_autogroup' defined but not used [-Wunused-function] bool task_wants_autogroup(struct task_struct *p, struct task_group *tg) ^~~~~~~~~~~~~~~~~~~~ kernel/sched/autogroup.c:42:6: warning: 'autogroup_free' defined but not used [-Wunused-function] void autogroup_free(struct task_group *tg) ^~~~~~~~~~~~~~ kernel/sched/autogroup.c:33:13: warning: 'autogroup_init' defined but not used [-Wunused-function] void __init autogroup_init(struct task_struct *init_task) ^~~~~~~~~~~~~~ In file included from include/linux/compat.h:34:0, from arch/arm64/include/asm/elf.h:9, from include/linux/elf.h:6, from include/linux/module.h:19, from include/linux/device/driver.h:21, from include/linux/device.h:32, from include/linux/node.h:18, from include/linux/cpu.h:17, from include/linux/cpufreq.h:12, from kernel/sched/build_utility.c:22: arch/arm64/include/asm/syscall_wrapper.h:62:14: warning: '__se_sys_membarrier' defined but not used [-Wunused-function] static long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ ^ include/linux/syscalls.h:230:2: note: in expansion of macro '__SYSCALL_DEFINEx' __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx' #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) ^~~~~~~~~~~~~~~ kernel/sched/membarrier.c:614:1: note: in expansion of macro 'SYSCALL_DEFINE3' SYSCALL_DEFINE3(membarrier, int, cmd, unsigned int, flags, int, cpu_id) ^~~~~~~~~~~~~~~ arch/arm64/include/asm/syscall_wrapper.h:58:18: warning: '__arm64_sys_membarrier' defined but not used [-Wunused-function] asmlinkage long __arm64_sys##name(const struct pt_regs *regs) \ ^ include/linux/syscalls.h:230:2: note: in expansion of macro '__SYSCALL_DEFINEx' __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx' #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) ^~~~~~~~~~~~~~~ kernel/sched/membarrier.c:614:1: note: in expansion of macro 'SYSCALL_DEFINE3' SYSCALL_DEFINE3(membarrier, int, cmd, unsigned int, flags, int, cpu_id) ^~~~~~~~~~~~~~~ In file included from kernel/sched/build_utility.c:101:0: kernel/sched/membarrier.c:233:6: warning: 'membarrier_update_current_mm' defined but not used [-Wunused-function] void membarrier_update_current_mm(struct mm_struct *next_mm) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/sched/membarrier.c:217:6: warning: 'membarrier_exec_mmap' defined but not used [-Wunused-function] void membarrier_exec_mmap(struct mm_struct *mm) ^~~~~~~~~~~~~~~~~~~~ In file included from kernel/sched/build_utility.c:97:0: kernel/sched/psi.c:1471:6: warning: 'psi_cgroup_restart' defined but not used [-Wunused-function] void psi_cgroup_restart(struct psi_group *group) ^~~~~~~~~~~~~~~~~~ kernel/sched/psi.c:1416:6: warning: 'cgroup_move_task' defined but not used [-Wunused-function] void cgroup_move_task(struct task_struct *task, struct css_set *to) ^~~~~~~~~~~~~~~~ kernel/sched/psi.c:1392:6: warning: 'psi_cgroup_free' defined but not used [-Wunused-function] void psi_cgroup_free(struct cgroup *cgroup) ^~~~~~~~~~~~~~~ kernel/sched/psi.c:1373:5: warning: 'psi_cgroup_alloc' defined but not used [-Wunused-function] int psi_cgroup_alloc(struct cgroup *cgroup) ^~~~~~~~~~~~~~~~ >> kernel/sched/psi.c:1262:6: warning: 'psi_account_irqtime' defined but not used [-Wunused-function] void psi_account_irqtime(struct task_struct *task, u32 delta) ^~~~~~~~~~~~~~~~~~~ kernel/sched/psi.c:1168:6: warning: 'psi_task_switch' defined but not used [-Wunused-function] void psi_task_switch(struct task_struct *prev, struct task_struct *next, ^~~~~~~~~~~~~~~ kernel/sched/psi.c:949:13: warning: 'poll_timer_fn' defined but not used [-Wunused-function] static void poll_timer_fn(struct timer_list *t) ^~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/psi_account_irqtime +1262 kernel/sched/psi.c eb414681d5a07d Johannes Weiner 2018-10-26 1260 52b1364ba0b105 Chengming Zhou 2022-08-26 1261 #ifdef CONFIG_IRQ_TIME_ACCOUNTING 52b1364ba0b105 Chengming Zhou 2022-08-26 @1262 void psi_account_irqtime(struct task_struct *task, u32 delta) 52b1364ba0b105 Chengming Zhou 2022-08-26 1263 { 52b1364ba0b105 Chengming Zhou 2022-08-26 1264 int cpu = task_cpu(task); 52b1364ba0b105 Chengming Zhou 2022-08-26 1265 struct psi_group *group; 52b1364ba0b105 Chengming Zhou 2022-08-26 1266 struct psi_group_cpu *groupc; 52b1364ba0b105 Chengming Zhou 2022-08-26 1267 u64 now; 52b1364ba0b105 Chengming Zhou 2022-08-26 1268 c4069ab39e78c5 Haifeng Xu 2024-01-04 1269 if (static_branch_likely(&psi_disabled)) c4069ab39e78c5 Haifeng Xu 2024-01-04 1270 return; c4069ab39e78c5 Haifeng Xu 2024-01-04 1271 52b1364ba0b105 Chengming Zhou 2022-08-26 1272 if (!task->pid) 52b1364ba0b105 Chengming Zhou 2022-08-26 1273 return; 52b1364ba0b105 Chengming Zhou 2022-08-26 1274 52b1364ba0b105 Chengming Zhou 2022-08-26 1275 now = cpu_clock(cpu); 52b1364ba0b105 Chengming Zhou 2022-08-26 1276 dc86aba751e286 Chengming Zhou 2022-08-26 1277 group = task_psi_group(task); dc86aba751e286 Chengming Zhou 2022-08-26 1278 do { 34f26a15611afb Chengming Zhou 2022-09-07 1279 if (!group->enabled) 34f26a15611afb Chengming Zhou 2022-09-07 1280 continue; 34f26a15611afb Chengming Zhou 2022-09-07 1281 52b1364ba0b105 Chengming Zhou 2022-08-26 1282 groupc = per_cpu_ptr(group->pcpu, cpu); 52b1364ba0b105 Chengming Zhou 2022-08-26 1283 52b1364ba0b105 Chengming Zhou 2022-08-26 1284 write_seqcount_begin(&groupc->seq); 52b1364ba0b105 Chengming Zhou 2022-08-26 1285 52b1364ba0b105 Chengming Zhou 2022-08-26 1286 record_times(groupc, now); 52b1364ba0b105 Chengming Zhou 2022-08-26 1287 groupc->times[PSI_IRQ_FULL] += delta; 52b1364ba0b105 Chengming Zhou 2022-08-26 1288 52b1364ba0b105 Chengming Zhou 2022-08-26 1289 write_seqcount_end(&groupc->seq); 52b1364ba0b105 Chengming Zhou 2022-08-26 1290 65457b74aa9437 Domenico Cerasuolo 2023-03-30 1291 if (group->rtpoll_states & (1 << PSI_IRQ_FULL)) 65457b74aa9437 Domenico Cerasuolo 2023-03-30 1292 psi_schedule_rtpoll_work(group, 1, false); dc86aba751e286 Chengming Zhou 2022-08-26 1293 } while ((group = group->parent)); 52b1364ba0b105 Chengming Zhou 2022-08-26 1294 } 52b1364ba0b105 Chengming Zhou 2022-08-26 1295 #endif 52b1364ba0b105 Chengming Zhou 2022-08-26 1296 eb414681d5a07d Johannes Weiner 2018-10-26 1297 /** eb414681d5a07d Johannes Weiner 2018-10-26 1298 * psi_memstall_enter - mark the beginning of a memory stall section a65983d90bfb5e Lu Jialin 2024-01-04 1299 * @flags: flags to handle nested sections. When the memory pressure a65983d90bfb5e Lu Jialin 2024-01-04 1300 * is stalled in pressure_stat, the flags will be the pressure source, a65983d90bfb5e Lu Jialin 2024-01-04 1301 * Otherwise, the init flags should be zero. eb414681d5a07d Johannes Weiner 2018-10-26 1302 * eb414681d5a07d Johannes Weiner 2018-10-26 1303 * Marks the calling task as being stalled due to a lack of memory, eb414681d5a07d Johannes Weiner 2018-10-26 1304 * such as waiting for a refault or performing reclaim. eb414681d5a07d Johannes Weiner 2018-10-26 1305 */ eb414681d5a07d Johannes Weiner 2018-10-26 1306 void psi_memstall_enter(unsigned long *flags) eb414681d5a07d Johannes Weiner 2018-10-26 1307 { eb414681d5a07d Johannes Weiner 2018-10-26 1308 struct rq_flags rf; eb414681d5a07d Johannes Weiner 2018-10-26 1309 struct rq *rq; a65983d90bfb5e Lu Jialin 2024-01-04 1310 #ifdef CONFIG_PSI_FINE_GRAINED a65983d90bfb5e Lu Jialin 2024-01-04 1311 unsigned long stat_flags = *flags; a65983d90bfb5e Lu Jialin 2024-01-04 1312 #endif eb414681d5a07d Johannes Weiner 2018-10-26 1313 e0c274472d5d27 Johannes Weiner 2018-11-30 1314 if (static_branch_likely(&psi_disabled)) eb414681d5a07d Johannes Weiner 2018-10-26 1315 return; eb414681d5a07d Johannes Weiner 2018-10-26 1316 1066d1b6974e09 Yafang Shao 2020-03-16 1317 *flags = current->in_memstall; eb414681d5a07d Johannes Weiner 2018-10-26 1318 if (*flags) eb414681d5a07d Johannes Weiner 2018-10-26 1319 return; 3dfdd2f9d0dbe7 Lu Jialin 2024-01-02 1320 3dfdd2f9d0dbe7 Lu Jialin 2024-01-02 1321 trace_psi_memstall_enter(_RET_IP_); eb414681d5a07d Johannes Weiner 2018-10-26 1322 /* 1066d1b6974e09 Yafang Shao 2020-03-16 1323 * in_memstall setting & accounting needs to be atomic wrt eb414681d5a07d Johannes Weiner 2018-10-26 1324 * changes to the task's scheduling state, otherwise we can eb414681d5a07d Johannes Weiner 2018-10-26 1325 * race with CPU migration. eb414681d5a07d Johannes Weiner 2018-10-26 1326 */ eb414681d5a07d Johannes Weiner 2018-10-26 1327 rq = this_rq_lock_irq(&rf); eb414681d5a07d Johannes Weiner 2018-10-26 1328 1066d1b6974e09 Yafang Shao 2020-03-16 1329 current->in_memstall = 1; a65983d90bfb5e Lu Jialin 2024-01-04 1330 #ifdef CONFIG_PSI_FINE_GRAINED a65983d90bfb5e Lu Jialin 2024-01-04 1331 if (stat_flags) a65983d90bfb5e Lu Jialin 2024-01-04 1332 current->memstall_type = stat_flags; a65983d90bfb5e Lu Jialin 2024-01-04 1333 #endif cb0e52b7748737 Brian Chen 2021-11-10 1334 psi_task_change(current, 0, TSK_MEMSTALL | TSK_MEMSTALL_RUNNING); eb414681d5a07d Johannes Weiner 2018-10-26 1335 eb414681d5a07d Johannes Weiner 2018-10-26 1336 rq_unlock_irq(rq, &rf); eb414681d5a07d Johannes Weiner 2018-10-26 1337 } 527eb453bbfe65 Christoph Hellwig 2022-09-15 1338 EXPORT_SYMBOL_GPL(psi_memstall_enter); eb414681d5a07d Johannes Weiner 2018-10-26 1339 eb414681d5a07d Johannes Weiner 2018-10-26 1340 /** eb414681d5a07d Johannes Weiner 2018-10-26 1341 * psi_memstall_leave - mark the end of an memory stall section eb414681d5a07d Johannes Weiner 2018-10-26 1342 * @flags: flags to handle nested memdelay sections eb414681d5a07d Johannes Weiner 2018-10-26 1343 * eb414681d5a07d Johannes Weiner 2018-10-26 1344 * Marks the calling task as no longer stalled due to lack of memory. eb414681d5a07d Johannes Weiner 2018-10-26 1345 */ eb414681d5a07d Johannes Weiner 2018-10-26 1346 void psi_memstall_leave(unsigned long *flags) eb414681d5a07d Johannes Weiner 2018-10-26 1347 { eb414681d5a07d Johannes Weiner 2018-10-26 1348 struct rq_flags rf; eb414681d5a07d Johannes Weiner 2018-10-26 1349 struct rq *rq; eb414681d5a07d Johannes Weiner 2018-10-26 1350 e0c274472d5d27 Johannes Weiner 2018-11-30 1351 if (static_branch_likely(&psi_disabled)) eb414681d5a07d Johannes Weiner 2018-10-26 1352 return; eb414681d5a07d Johannes Weiner 2018-10-26 1353 eb414681d5a07d Johannes Weiner 2018-10-26 1354 if (*flags) eb414681d5a07d Johannes Weiner 2018-10-26 1355 return; 3dfdd2f9d0dbe7 Lu Jialin 2024-01-02 1356 3dfdd2f9d0dbe7 Lu Jialin 2024-01-02 1357 trace_psi_memstall_leave(_RET_IP_); eb414681d5a07d Johannes Weiner 2018-10-26 1358 /* 1066d1b6974e09 Yafang Shao 2020-03-16 1359 * in_memstall clearing & accounting needs to be atomic wrt eb414681d5a07d Johannes Weiner 2018-10-26 1360 * changes to the task's scheduling state, otherwise we could eb414681d5a07d Johannes Weiner 2018-10-26 1361 * race with CPU migration. eb414681d5a07d Johannes Weiner 2018-10-26 1362 */ eb414681d5a07d Johannes Weiner 2018-10-26 1363 rq = this_rq_lock_irq(&rf); eb414681d5a07d Johannes Weiner 2018-10-26 1364 1066d1b6974e09 Yafang Shao 2020-03-16 1365 current->in_memstall = 0; cb0e52b7748737 Brian Chen 2021-11-10 1366 psi_task_change(current, TSK_MEMSTALL | TSK_MEMSTALL_RUNNING, 0); eb414681d5a07d Johannes Weiner 2018-10-26 1367 eb414681d5a07d Johannes Weiner 2018-10-26 1368 rq_unlock_irq(rq, &rf); eb414681d5a07d Johannes Weiner 2018-10-26 1369 } 527eb453bbfe65 Christoph Hellwig 2022-09-15 1370 EXPORT_SYMBOL_GPL(psi_memstall_leave); eb414681d5a07d Johannes Weiner 2018-10-26 1371 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1372 #ifdef CONFIG_CGROUPS 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1373 int psi_cgroup_alloc(struct cgroup *cgroup) 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1374 { e2ad8ab04c5cdf Chengming Zhou 2022-08-26 1375 if (!static_branch_likely(&psi_cgroups_enabled)) 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1376 return 0; 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1377 2b97cf76289a4f Hao Jia 2022-08-06 1378 cgroup->psi = kzalloc(sizeof(struct psi_group), GFP_KERNEL); 5f69a6577bc33d Chen Wandun 2022-05-26 1379 if (!cgroup->psi) 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1380 return -ENOMEM; 5f69a6577bc33d Chen Wandun 2022-05-26 1381 5f69a6577bc33d Chen Wandun 2022-05-26 1382 cgroup->psi->pcpu = alloc_percpu(struct psi_group_cpu); 5f69a6577bc33d Chen Wandun 2022-05-26 1383 if (!cgroup->psi->pcpu) { 5f69a6577bc33d Chen Wandun 2022-05-26 1384 kfree(cgroup->psi); 5f69a6577bc33d Chen Wandun 2022-05-26 1385 return -ENOMEM; 5f69a6577bc33d Chen Wandun 2022-05-26 1386 } 5f69a6577bc33d Chen Wandun 2022-05-26 1387 group_init(cgroup->psi); dc86aba751e286 Chengming Zhou 2022-08-26 1388 cgroup->psi->parent = cgroup_psi(cgroup_parent(cgroup)); 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1389 return 0; 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1390 } 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1391 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1392 void psi_cgroup_free(struct cgroup *cgroup) 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1393 { e2ad8ab04c5cdf Chengming Zhou 2022-08-26 1394 if (!static_branch_likely(&psi_cgroups_enabled)) 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1395 return; 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1396 5f69a6577bc33d Chen Wandun 2022-05-26 1397 cancel_delayed_work_sync(&cgroup->psi->avgs_work); 5f69a6577bc33d Chen Wandun 2022-05-26 1398 free_percpu(cgroup->psi->pcpu); 0e94682b73bfa6 Suren Baghdasaryan 2019-05-14 1399 /* All triggers must be removed by now */ 65457b74aa9437 Domenico Cerasuolo 2023-03-30 1400 WARN_ONCE(cgroup->psi->rtpoll_states, "psi: trigger leak\n"); 5f69a6577bc33d Chen Wandun 2022-05-26 1401 kfree(cgroup->psi); 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1402 } 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1403 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1404 /** 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1405 * cgroup_move_task - move task to a different cgroup 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1406 * @task: the task 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1407 * @to: the target css_set 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1408 * 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1409 * Move task to a new cgroup and safely migrate its associated stall 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1410 * state between the different groups. 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1411 * 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1412 * This function acquires the task's rq lock to lock out concurrent 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1413 * changes to the task's scheduling state and - in case the task is 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1414 * running - concurrent changes to its stall state. 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1415 */ 2ce7135adc9ad0 Johannes Weiner 2018-10-26 @1416 void cgroup_move_task(struct task_struct *task, struct css_set *to) 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1417 { d583d360a620e6 Johannes Weiner 2021-05-03 1418 unsigned int task_flags; 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1419 struct rq_flags rf; 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1420 struct rq *rq; 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1421 e2ad8ab04c5cdf Chengming Zhou 2022-08-26 1422 if (!static_branch_likely(&psi_cgroups_enabled)) { 8fcb2312d1e330 Olof Johansson 2018-11-16 1423 /* 8fcb2312d1e330 Olof Johansson 2018-11-16 1424 * Lame to do this here, but the scheduler cannot be locked 8fcb2312d1e330 Olof Johansson 2018-11-16 1425 * from the outside, so we move cgroups from inside sched/. 8fcb2312d1e330 Olof Johansson 2018-11-16 1426 */ 8fcb2312d1e330 Olof Johansson 2018-11-16 1427 rcu_assign_pointer(task->cgroups, to); 8fcb2312d1e330 Olof Johansson 2018-11-16 1428 return; 8fcb2312d1e330 Olof Johansson 2018-11-16 1429 } 8fcb2312d1e330 Olof Johansson 2018-11-16 1430 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1431 rq = task_rq_lock(task, &rf); 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1432 d583d360a620e6 Johannes Weiner 2021-05-03 1433 /* d583d360a620e6 Johannes Weiner 2021-05-03 1434 * We may race with schedule() dropping the rq lock between d583d360a620e6 Johannes Weiner 2021-05-03 1435 * deactivating prev and switching to next. Because the psi d583d360a620e6 Johannes Weiner 2021-05-03 1436 * updates from the deactivation are deferred to the switch d583d360a620e6 Johannes Weiner 2021-05-03 1437 * callback to save cgroup tree updates, the task's scheduling d583d360a620e6 Johannes Weiner 2021-05-03 1438 * state here is not coherent with its psi state: d583d360a620e6 Johannes Weiner 2021-05-03 1439 * d583d360a620e6 Johannes Weiner 2021-05-03 1440 * schedule() cgroup_move_task() d583d360a620e6 Johannes Weiner 2021-05-03 1441 * rq_lock() d583d360a620e6 Johannes Weiner 2021-05-03 1442 * deactivate_task() d583d360a620e6 Johannes Weiner 2021-05-03 1443 * p->on_rq = 0 d583d360a620e6 Johannes Weiner 2021-05-03 1444 * psi_dequeue() // defers TSK_RUNNING & TSK_IOWAIT updates d583d360a620e6 Johannes Weiner 2021-05-03 1445 * pick_next_task() d583d360a620e6 Johannes Weiner 2021-05-03 1446 * rq_unlock() d583d360a620e6 Johannes Weiner 2021-05-03 1447 * rq_lock() d583d360a620e6 Johannes Weiner 2021-05-03 1448 * psi_task_change() // old cgroup d583d360a620e6 Johannes Weiner 2021-05-03 1449 * task->cgroups = to d583d360a620e6 Johannes Weiner 2021-05-03 1450 * psi_task_change() // new cgroup d583d360a620e6 Johannes Weiner 2021-05-03 1451 * rq_unlock() d583d360a620e6 Johannes Weiner 2021-05-03 1452 * rq_lock() d583d360a620e6 Johannes Weiner 2021-05-03 1453 * psi_sched_switch() // does deferred updates in new cgroup d583d360a620e6 Johannes Weiner 2021-05-03 1454 * d583d360a620e6 Johannes Weiner 2021-05-03 1455 * Don't rely on the scheduling state. Use psi_flags instead. d583d360a620e6 Johannes Weiner 2021-05-03 1456 */ d583d360a620e6 Johannes Weiner 2021-05-03 1457 task_flags = task->psi_flags; 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1458 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1459 if (task_flags) 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1460 psi_task_change(task, task_flags, 0); 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1461 8fcb2312d1e330 Olof Johansson 2018-11-16 1462 /* See comment above */ 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1463 rcu_assign_pointer(task->cgroups, to); 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1464 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1465 if (task_flags) 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1466 psi_task_change(task, 0, task_flags); 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1467 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1468 task_rq_unlock(rq, task, &rf); 2ce7135adc9ad0 Johannes Weiner 2018-10-26 1469 } 34f26a15611afb Chengming Zhou 2022-09-07 1470 :::::: The code at line 1262 was first introduced by commit :::::: 52b1364ba0b105122d6de0e719b36db705011ac1 sched/psi: Add PSI_IRQ to track IRQ/SOFTIRQ pressure :::::: TO: Chengming Zhou <zhouchengming(a)bytedance.com> :::::: CC: Peter Zijlstra <peterz(a)infradead.org> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-5.10 2862/2862] fs/cachefiles/ondemand.o: warning: objtool: cachefiles_ondemand_daemon_read()+0x2ea: unreachable instruction
by kernel test robot 17 Apr '25

17 Apr '25

Hi Jeffle, First bad commit (maybe != root cause): tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 2affea8965688b8231cf977864ba7539320d5db8 commit: 2937cd5f8c58bd8e7895f6b2698057721442248e [2862/2862] cachefiles: notify the user daemon when looking up cookie config: x86_64-buildonly-randconfig-005-20250415 (https://download.01.org/0day-ci/archive/20250417/202504170158.DUuilMVg-lkp@…) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250417/202504170158.DUuilMVg-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/202504170158.DUuilMVg-lkp@intel.com/ All warnings (new ones prefixed by >>): >> fs/cachefiles/ondemand.o: warning: objtool: cachefiles_ondemand_daemon_read()+0x2ea: unreachable instruction -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:openEuler-1.0-LTS 1582/1582] kernel/futex.o: warning: objtool: futex_wait()+0x2ab: unreachable instruction
by kernel test robot 17 Apr '25

17 Apr '25

Hi Thomas, FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: d47443532b562cff105f8cfbc32343f83a2ecd01 commit: 1d78ee3e3677377ad1596c4348677899fe8337ee [1582/1582] futex: Move futex exit handling into futex code config: x86_64-buildonly-randconfig-005-20250415 (https://download.01.org/0day-ci/archive/20250417/202504170042.n4ixMCSo-lkp@…) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250417/202504170042.n4ixMCSo-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/202504170042.n4ixMCSo-lkp@intel.com/ All warnings (new ones prefixed by >>): >> kernel/futex.o: warning: objtool: futex_wait()+0x2ab: unreachable instruction -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:openEuler-1.0-LTS] BUILD REGRESSION d47443532b562cff105f8cfbc32343f83a2ecd01
by kernel test robot 16 Apr '25

16 Apr '25

tree/branch: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS branch HEAD: d47443532b562cff105f8cfbc32343f83a2ecd01 !15862 tty: goldfish: Use tty_port_destroy() to destroy port Error/Warning (recently discovered and may have been fixed): https://lore.kernel.org/oe-kbuild-all/202503171950.PEaY4TuS-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202503181741.vcHyKenV-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202503201721.gZeymcpc-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202503271341.WPxyfHvo-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202503271858.j6vJ9Bhc-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202504100333.uIAnI5Io-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202504160234.O5AhsCPF-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202504160550.0sQHot70-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202504160744.SWErJnVd-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202504160834.JePJgVdj-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202504160854.8OhZdFkA-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202504161537.Uan8Cvv1-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202504162035.XTrGjsOi-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202504162155.YWQMdqiA-lkp@intel.com https://lore.kernel.org/oe-kbuild/202504160621.3VfLzprK-lkp@intel.com arch/x86/entry/entry_64.o: warning: objtool: .entry.text+0x162: unsupported intra-function call arch/x86/entry/entry_64.o: warning: objtool: .entry.text+0x1c2: unsupported intra-function call arch/x86/entry/entry_64.o: warning: objtool: .entry.text+0x1d1: unsupported intra-function call arch/x86/entry/entry_64.o: warning: objtool: .entry.text+0x1d2: unsupported intra-function call arch/x86/entry/entry_64.o: warning: objtool: .entry.text+0x1e1: unsupported intra-function call arch/x86/entry/entry_64.o: warning: objtool: If this is a retpoline, please patch it in with alternatives and annotate it with ANNOTATE_NOSPEC_ALTERNATIVE. arch/x86/kernel/apic/io_apic.o: warning: objtool: acpi_get_override_irq()+0x108: can't find switch jump table arch/x86/mm/init.o: warning: objtool: init_mem_mapping()+0x147: unreachable instruction block/blk-lib.o: warning: objtool: __blkdev_issue_discard()+0x22a: unreachable instruction block/blk-mq-debugfs.o: warning: objtool: debugfs_rq_show()+0xdf: unreachable instruction drivers/dma/pl330.c:2598:15: warning: 'dst' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/dma/pl330.c:2599:15: warning: 'src' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/gpu/drm/amd/amdgpu/amdgpu_ids.o: warning: objtool: amdgpu_vmid_grab()+0xd3e: unreachable instruction drivers/gpu/drm/ttm/ttm_object.c:60: error: Cannot parse struct or union! drivers/media/i2c/adv7511-v4l2.o: warning: objtool: adv7511_set_fmt()+0x805: unreachable instruction drivers/nvdimm/label.o: warning: objtool: nd_blk_namespace_label_update()+0x1326: unreachable instruction drivers/pinctrl/core.c:1338: error: Cannot parse struct or union! drivers/platform/x86/intel_speed_select_if/.tmp_isst_if_mbox_msr.o: warning: objtool: missing symbol for section .exit.text drivers/platform/x86/intel_speed_select_if/.tmp_isst_if_mbox_pci.o: warning: objtool: missing symbol for section .init.text drivers/platform/x86/intel_speed_select_if/.tmp_isst_if_mmio.o: warning: objtool: missing symbol for section .init.text drivers/spi/spi-phytium-plat.c:122:8: error: implicit declaration of function 'gpiod_count' [-Werror,-Wimplicit-function-declaration] drivers/spi/spi-phytium-plat.c:128:12: error: implicit declaration of function 'devm_gpiod_get_index_optional' [-Werror,-Wimplicit-function-declaration] drivers/spi/spi-phytium-plat.c:129:17: error: use of undeclared identifier 'GPIOD_OUT_LOW' drivers/spi/spi-phytium-plat.c:136:14: error: implicit declaration of function 'desc_to_gpio' [-Werror,-Wimplicit-function-declaration] drivers/staging/comedi/drivers/ni_labpc_common.o: warning: objtool: labpc_ai_check_chanlist()+0x59: can't find switch jump table drivers/usb/typec/tps6598x.o: warning: objtool: tps6598x_probe()+0x1ed: can't find switch jump table fs/debugfs/file.o: warning: objtool: full_proxy_open()+0x55a: unreachable instruction fs/ext4/mballoc.o: warning: objtool: ext4_mb_complex_scan_group()+0x11a4: unreachable instruction fs/gfs2/rgrp.o: warning: objtool: __rs_deltree()+0x188: unreachable instruction fs/xfs/xfs_message.o: warning: objtool: assfail()+0x4f: unreachable instruction include/asm-generic/atomic-instrumented.h:33:9: warning: 'wait_req' may be used uninitialized [-Wmaybe-uninitialized] include/linux/filter.h:332:4: warning: cast between incompatible function types from 'int (* const)(struct bpf_map *, void *)' to 'u64 (*)(u64, u64, u64, u64, u64)' {aka 'long long unsigned int (*)(long long unsigned int, long long unsigned int, long long unsigned int, long long unsigned int, long long unsigned int)'} [-Wcast-function-type] include/linux/filter.h:332:4: warning: cast between incompatible function types from 'int (* const)(struct bpf_map *, void *, void *, u64)' {aka 'int (* const)(struct bpf_map *, void *, void *, long long unsigned int)'} to 'u64 (*)(u64, u64, u64, u64, u64)' {aka 'long long unsigned int (*)(long long unsigned int, long long unsigned int, long long unsigned int, long long unsigned int, long long unsigned int)'} [-Wcast-function-type] include/linux/filter.h:332:4: warning: cast between incompatible function types from 'void * (* const)(struct bpf_map *, void *)' to 'u64 (*)(u64, u64, u64, u64, u64)' {aka 'long long unsigned int (*)(long long unsigned int, long long unsigned int, long long unsigned int, long long unsigned int, long long unsigned int)'} [-Wcast-function-type] include/linux/thread_info.h:119:17: warning: 'usercmd' may be used uninitialized [-Wmaybe-uninitialized] init/Kconfig:34: syntax error kernel/hung_task.c:148:7: error: use of undeclared identifier 'sysctl_hung_task_all_cpu_backtrace' kernel/livepatch/core.c:1013:12: warning: no previous prototype for function 'arch_klp_func_can_patch' [-Wmissing-prototypes] kernel/sched/.tmp_debug.o: warning: objtool: missing symbol for section .text.unlikely kernel/trace/trace_mmiotrace.o: warning: objtool: mmio_print_line()+0x272: unreachable instruction lib/ubsan.c:195:6: warning: mismatch in argument 1 type of built-in function '__ubsan_handle_add_overflow'; expected 'void *' [-Wbuiltin-declaration-mismatch] lib/ubsan.c:203:6: warning: mismatch in argument 1 type of built-in function '__ubsan_handle_sub_overflow'; expected 'void *' [-Wbuiltin-declaration-mismatch] lib/ubsan.c:210:6: warning: mismatch in argument 1 type of built-in function '__ubsan_handle_mul_overflow'; expected 'void *' [-Wbuiltin-declaration-mismatch] lib/ubsan.c:217:6: warning: mismatch in argument 1 type of built-in function '__ubsan_handle_negate_overflow'; expected 'void *' [-Wbuiltin-declaration-mismatch] lib/ubsan.c:238:6: warning: mismatch in argument 1 type of built-in function '__ubsan_handle_divrem_overflow'; expected 'void *' [-Wbuiltin-declaration-mismatch] lib/ubsan.c:337:6: warning: mismatch in argument 1 type of built-in function '__ubsan_handle_type_mismatch_v1'; expected 'void *' [-Wbuiltin-declaration-mismatch] lib/ubsan.c:352:6: warning: mismatch in argument 1 type of built-in function '__ubsan_handle_vla_bound_not_positive'; expected 'void *' [-Wbuiltin-declaration-mismatch] lib/ubsan.c:370:6: warning: mismatch in argument 1 type of built-in function '__ubsan_handle_out_of_bounds'; expected 'void *' [-Wbuiltin-declaration-mismatch] lib/ubsan.c:387:6: warning: mismatch in argument 1 type of built-in function '__ubsan_handle_shift_out_of_bounds'; expected 'void *' [-Wbuiltin-declaration-mismatch] lib/ubsan.c:438:6: warning: mismatch in argument 1 type of built-in function '__ubsan_handle_load_invalid_value'; expected 'void *' [-Wbuiltin-declaration-mismatch] mm/.tmp_memcontrol.o: warning: objtool: missing symbol for section .text.unlikely mm/.tmp_util.o: warning: objtool: missing symbol for section .text mm/debug.c:143:21: warning: more '%' conversions than data arguments [-Wformat-insufficient-args] mm/debug.c:174:3: warning: format specifies type 'void *' but the argument has type 'int' [-Wformat] mm/debug.c:175:18: warning: format specifies type 'unsigned long' but the argument has type 'const unsigned long *' [-Wformat] mm/debug.c:175:3: warning: format specifies type 'int' but the argument has type 'unsigned long' [-Wformat] mm/hugetlb.c:1370:6: warning: no previous prototype for function 'free_huge_page_to_dhugetlb_pool' [-Wmissing-prototypes] mm/vmscan.c:3257:21: error: implicit declaration of function 'kernel_swap_enabled' [-Werror,-Wimplicit-function-declaration] mm/vmscan.o: warning: objtool: shrink_node()+0x981: can't find switch jump table Unverified Error/Warning (likely false positive, kindly check if interested): ./samples/mic/mpssd/mpssd.c: 40 linux/version.h not needed. block/blk-throttle.c:2306:1-7: preceding lock on line 2212 drivers/usb/dwc2/gadget.o: warning: objtool: dwc2_gadget_config_nonisoc_xfer_ddma() falls through to next function dwc2_hsotg_read_frameno() mm/kasan/kasan_init.c:220: warning: Function parameter or member 'shadow_end' not described in 'kasan_populate_zero_shadow' mm/kasan/kasan_init.c:220: warning: Function parameter or member 'shadow_start' not described in 'kasan_populate_zero_shadow' sound/isa/msnd/msnd_pinnacle.o: warning: objtool: snd_msnd_probe()+0xf7: can't find switch jump table Error/Warning ids grouped by kconfigs: recent_errors |-- arm64-allmodconfig | |-- mm-kasan-kasan_init.c:warning:Function-parameter-or-member-shadow_end-not-described-in-kasan_populate_zero_shadow | `-- mm-kasan-kasan_init.c:warning:Function-parameter-or-member-shadow_start-not-described-in-kasan_populate_zero_shadow |-- arm64-randconfig-001-20250415 | `-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union |-- arm64-randconfig-002-20250415 | |-- drivers-dma-pl330.c:warning:dst-may-be-used-uninitialized-in-this-function | |-- drivers-dma-pl330.c:warning:src-may-be-used-uninitialized-in-this-function | `-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union |-- arm64-randconfig-003-20250415 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- include-linux-filter.h:warning:cast-between-incompatible-function-types-from-int-(-const)(struct-bpf_map-void-)-to-u64-(-)(u64-u64-u64-u64-u64)-aka-long-long-unsigned-int-(-)(long-long-unsigned-int-lo | |-- include-linux-filter.h:warning:cast-between-incompatible-function-types-from-int-(-const)(struct-bpf_map-void-void-u64)-aka-int-(-const)(struct-bpf_map-void-void-long-long-unsigned-int)-to-u64-(-)(u64 | |-- include-linux-filter.h:warning:cast-between-incompatible-function-types-from-void-(-const)(struct-bpf_map-void-)-to-u64-(-)(u64-u64-u64-u64-u64)-aka-long-long-unsigned-int-(-)(long-long-unsigned-int-l | |-- lib-ubsan.c:warning:mismatch-in-argument-type-of-built-in-function-__ubsan_handle_add_overflow-expected-void | |-- lib-ubsan.c:warning:mismatch-in-argument-type-of-built-in-function-__ubsan_handle_divrem_overflow-expected-void | |-- lib-ubsan.c:warning:mismatch-in-argument-type-of-built-in-function-__ubsan_handle_load_invalid_value-expected-void | |-- lib-ubsan.c:warning:mismatch-in-argument-type-of-built-in-function-__ubsan_handle_mul_overflow-expected-void | |-- lib-ubsan.c:warning:mismatch-in-argument-type-of-built-in-function-__ubsan_handle_negate_overflow-expected-void | |-- lib-ubsan.c:warning:mismatch-in-argument-type-of-built-in-function-__ubsan_handle_out_of_bounds-expected-void | |-- lib-ubsan.c:warning:mismatch-in-argument-type-of-built-in-function-__ubsan_handle_shift_out_of_bounds-expected-void | |-- lib-ubsan.c:warning:mismatch-in-argument-type-of-built-in-function-__ubsan_handle_sub_overflow-expected-void | |-- lib-ubsan.c:warning:mismatch-in-argument-type-of-built-in-function-__ubsan_handle_type_mismatch_v1-expected-void | |-- lib-ubsan.c:warning:mismatch-in-argument-type-of-built-in-function-__ubsan_handle_vla_bound_not_positive-expected-void | |-- mm-kasan-kasan_init.c:warning:Function-parameter-or-member-shadow_end-not-described-in-kasan_populate_zero_shadow | `-- mm-kasan-kasan_init.c:warning:Function-parameter-or-member-shadow_start-not-described-in-kasan_populate_zero_shadow |-- arm64-randconfig-004-20250415 | |-- drivers-dma-pl330.c:warning:dst-may-be-used-uninitialized-in-this-function | |-- drivers-dma-pl330.c:warning:src-may-be-used-uninitialized-in-this-function | |-- drivers-gpu-drm-ttm-ttm_object.c:error:Cannot-parse-struct-or-union | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- include-linux-filter.h:warning:cast-between-incompatible-function-types-from-int-(-const)(struct-bpf_map-void-)-to-u64-(-)(u64-u64-u64-u64-u64)-aka-long-long-unsigned-int-(-)(long-long-unsigned-int-lo | |-- include-linux-filter.h:warning:cast-between-incompatible-function-types-from-int-(-const)(struct-bpf_map-void-void-u64)-aka-int-(-const)(struct-bpf_map-void-void-long-long-unsigned-int)-to-u64-(-)(u64 | `-- include-linux-filter.h:warning:cast-between-incompatible-function-types-from-void-(-const)(struct-bpf_map-void-)-to-u64-(-)(u64-u64-u64-u64-u64)-aka-long-long-unsigned-int-(-)(long-long-unsigned-int-l |-- arm64-randconfig-052-20250416 | `-- init-Kconfig:syntax-error |-- arm64-randconfig-055-20250416 | `-- init-Kconfig:syntax-error |-- arm64-randconfig-r062-20250416 | |-- drivers-gpu-drm-ttm-ttm_object.c:error:Cannot-parse-struct-or-union | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-kasan-kasan_init.c:warning:Function-parameter-or-member-shadow_end-not-described-in-kasan_populate_zero_shadow | `-- mm-kasan-kasan_init.c:warning:Function-parameter-or-member-shadow_start-not-described-in-kasan_populate_zero_shadow |-- x86_64-allnoconfig | |-- arch-x86-entry-entry_64.o:warning:objtool:.entry.text:unsupported-intra-function-call | |-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration | `-- samples-mic-mpssd-mpssd.c:linux-version.h-not-needed. |-- x86_64-allyesconfig | |-- drivers-gpu-drm-ttm-ttm_object.c:error:Cannot-parse-struct-or-union | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-kasan-kasan_init.c:warning:Function-parameter-or-member-shadow_end-not-described-in-kasan_populate_zero_shadow | |-- mm-kasan-kasan_init.c:warning:Function-parameter-or-member-shadow_start-not-described-in-kasan_populate_zero_shadow | `-- mm-page_alloc.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-deferred_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type |-- x86_64-buildonly-randconfig-001-20250401 | `-- drivers-nvdimm-label.o:warning:objtool:nd_blk_namespace_label_update:unreachable-instruction |-- x86_64-buildonly-randconfig-001-20250415 | `-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union |-- x86_64-buildonly-randconfig-002-20250408 | |-- drivers-staging-comedi-drivers-ni_labpc_common.o:warning:objtool:labpc_ai_check_chanlist:can-t-find-switch-jump-table | `-- drivers-usb-typec-tps6598x.o:warning:objtool:tps6598x_probe:can-t-find-switch-jump-table |-- x86_64-buildonly-randconfig-002-20250415 | |-- arch-x86-entry-entry_64.o:warning:objtool:.entry.text:unsupported-intra-function-call | |-- arch-x86-entry-entry_64.o:warning:objtool:If-this-is-a-retpoline-please-patch-it-in-with-alternatives-and-annotate-it-with-ANNOTATE_NOSPEC_ALTERNATIVE. | |-- drivers-gpu-drm-ttm-ttm_object.c:error:Cannot-parse-struct-or-union | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-kasan-kasan_init.c:warning:Function-parameter-or-member-shadow_end-not-described-in-kasan_populate_zero_shadow | `-- mm-kasan-kasan_init.c:warning:Function-parameter-or-member-shadow_start-not-described-in-kasan_populate_zero_shadow |-- x86_64-buildonly-randconfig-003-20250207 | `-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool |-- x86_64-buildonly-randconfig-003-20250315 | |-- arch-x86-kernel-apic-io_apic.o:warning:objtool:acpi_get_override_irq:can-t-find-switch-jump-table | `-- sound-isa-msnd-msnd_pinnacle.o:warning:objtool:snd_msnd_probe:can-t-find-switch-jump-table |-- x86_64-buildonly-randconfig-003-20250415 | |-- arch-x86-entry-entry_64.o:warning:objtool:.entry.text:unsupported-intra-function-call | |-- arch-x86-entry-entry_64.o:warning:objtool:If-this-is-a-retpoline-please-patch-it-in-with-alternatives-and-annotate-it-with-ANNOTATE_NOSPEC_ALTERNATIVE. | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- include-asm-generic-atomic-instrumented.h:warning:wait_req-may-be-used-uninitialized | |-- include-linux-thread_info.h:warning:usercmd-may-be-used-uninitialized | |-- mm-kasan-kasan_init.c:warning:Function-parameter-or-member-shadow_end-not-described-in-kasan_populate_zero_shadow | `-- mm-kasan-kasan_init.c:warning:Function-parameter-or-member-shadow_start-not-described-in-kasan_populate_zero_shadow |-- x86_64-buildonly-randconfig-004-20250102 | `-- drivers-media-i2c-adv7511-v4l2.o:warning:objtool:adv7511_set_fmt:unreachable-instruction |-- x86_64-buildonly-randconfig-004-20250415 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-page_alloc.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-deferred_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | `-- 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-buildonly-randconfig-005-20250415 | |-- arch-x86-entry-entry_64.o:warning:objtool:.entry.text:unsupported-intra-function-call | |-- arch-x86-entry-entry_64.o:warning:objtool:If-this-is-a-retpoline-please-patch-it-in-with-alternatives-and-annotate-it-with-ANNOTATE_NOSPEC_ALTERNATIVE. | |-- arch-x86-mm-init.o:warning:objtool:init_mem_mapping:unreachable-instruction | |-- block-blk-lib.o:warning:objtool:__blkdev_issue_discard:unreachable-instruction | |-- drivers-gpu-drm-amd-amdgpu-amdgpu_ids.o:warning:objtool:amdgpu_vmid_grab:unreachable-instruction | |-- drivers-gpu-drm-ttm-ttm_object.c:error:Cannot-parse-struct-or-union | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- fs-gfs2-rgrp.o:warning:objtool:__rs_deltree:unreachable-instruction | |-- fs-xfs-xfs_message.o:warning:objtool:assfail:unreachable-instruction | |-- kernel-trace-trace_mmiotrace.o:warning:objtool:mmio_print_line:unreachable-instruction | `-- mm-swapfile.o:warning:objtool:free_swap_and_cache:unreachable-instruction |-- x86_64-buildonly-randconfig-006-20250408 | `-- block-blk-mq-debugfs.o:warning:objtool:debugfs_rq_show:unreachable-instruction |-- x86_64-buildonly-randconfig-006-20250415 | |-- drivers-gpu-drm-ttm-ttm_object.c:error:Cannot-parse-struct-or-union | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- drivers-platform-x86-intel_speed_select_if-.tmp_isst_if_mbox_msr.o:warning:objtool:missing-symbol-for-section-.exit.text | |-- drivers-platform-x86-intel_speed_select_if-.tmp_isst_if_mbox_pci.o:warning:objtool:missing-symbol-for-section-.init.text | |-- drivers-platform-x86-intel_speed_select_if-.tmp_isst_if_mmio.o:warning:objtool:missing-symbol-for-section-.init.text | |-- kernel-sched-.tmp_debug.o:warning:objtool:missing-symbol-for-section-.text.unlikely | |-- mm-.tmp_memcontrol.o:warning:objtool:missing-symbol-for-section-.text.unlikely | `-- mm-.tmp_util.o:warning:objtool:missing-symbol-for-section-.text |-- x86_64-defconfig | |-- arch-x86-entry-entry_64.o:warning:objtool:.entry.text:unsupported-intra-function-call | |-- arch-x86-entry-entry_64.o:warning:objtool:If-this-is-a-retpoline-please-patch-it-in-with-alternatives-and-annotate-it-with-ANNOTATE_NOSPEC_ALTERNATIVE. | `-- include-asm-generic-bug.h:warning:mcu_ctrl-may-be-used-uninitialized-in-this-function |-- x86_64-randconfig-101-20241223 | `-- fs-ext4-mballoc.o:warning:objtool:ext4_mb_complex_scan_group:unreachable-instruction |-- x86_64-randconfig-102-20250103 | `-- drivers-acpi-cppc_acpi.c:WARNING:NULL-check-before-some-freeing-functions-is-not-needed. |-- x86_64-randconfig-102-20250408 | `-- block-blk-throttle.c:preceding-lock-on-line |-- x86_64-randconfig-103-20241218 | `-- kernel-hung_task.c:error:use-of-undeclared-identifier-sysctl_hung_task_all_cpu_backtrace |-- x86_64-randconfig-103-20250305 | `-- drivers-gpu-drm-amd-amdgpu-amdgpu_ids.o:warning:objtool:amdgpu_vmid_grab:unreachable-instruction |-- x86_64-randconfig-104-20250321 | `-- drivers-usb-dwc2-gadget.o:warning:objtool:dwc2_gadget_config_nonisoc_xfer_ddma-falls-through-to-next-function-dwc2_hsotg_read_frameno() |-- x86_64-randconfig-104-20250408 | |-- drivers-spi-spi-phytium-plat.c:error:implicit-declaration-of-function-desc_to_gpio-Werror-Wimplicit-function-declaration | |-- drivers-spi-spi-phytium-plat.c:error:implicit-declaration-of-function-devm_gpiod_get_index_optional-Werror-Wimplicit-function-declaration | |-- drivers-spi-spi-phytium-plat.c:error:implicit-declaration-of-function-gpiod_count-Werror-Wimplicit-function-declaration | `-- drivers-spi-spi-phytium-plat.c:error:use-of-undeclared-identifier-GPIOD_OUT_LOW |-- x86_64-randconfig-122-20241226 | `-- fs-debugfs-file.o:warning:objtool:full_proxy_open:unreachable-instruction |-- x86_64-randconfig-122-20250309 | `-- drivers-net-tun.c:sparse:sparse:incompatible-types-in-comparison-expression-(different-address-spaces): |-- x86_64-randconfig-122-20250404 | `-- mm-vmscan.o:warning:objtool:shrink_node:can-t-find-switch-jump-table |-- x86_64-randconfig-161-20250322 | `-- kernel-livepatch-core.c:warning:no-previous-prototype-for-function-arch_klp_func_can_patch |-- x86_64-randconfig-161-20250416 | |-- arch-x86-entry-entry_64.o:warning:objtool:.entry.text:unsupported-intra-function-call | |-- arch-x86-entry-entry_64.o:warning:objtool:If-this-is-a-retpoline-please-patch-it-in-with-alternatives-and-annotate-it-with-ANNOTATE_NOSPEC_ALTERNATIVE. | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-kasan-kasan_init.c:warning:Function-parameter-or-member-shadow_end-not-described-in-kasan_populate_zero_shadow | `-- mm-kasan-kasan_init.c:warning:Function-parameter-or-member-shadow_start-not-described-in-kasan_populate_zero_shadow `-- x86_64-randconfig-r112-20250311 |-- mm-debug.c:warning:format-specifies-type-int-but-the-argument-has-type-unsigned-long |-- mm-debug.c:warning:format-specifies-type-unsigned-long-but-the-argument-has-type-const-unsigned-long |-- mm-debug.c:warning:format-specifies-type-void-but-the-argument-has-type-int `-- mm-debug.c:warning:more-conversions-than-data-arguments elapsed time: 1447m configs tested: 16 configs skipped: 128 tested configs: arm64 allmodconfig gcc-14.2.0 arm64 allnoconfig gcc-14.2.0 arm64 defconfig gcc-14.2.0 arm64 randconfig-001-20250415 gcc-11.5.0 arm64 randconfig-002-20250415 gcc-7.5.0 arm64 randconfig-003-20250415 gcc-9.5.0 arm64 randconfig-004-20250415 gcc-9.5.0 x86_64 allnoconfig clang-20 x86_64 allyesconfig clang-20 x86_64 buildonly-randconfig-001-20250415 clang-20 x86_64 buildonly-randconfig-002-20250415 gcc-11 x86_64 buildonly-randconfig-003-20250415 gcc-12 x86_64 buildonly-randconfig-004-20250415 clang-20 x86_64 buildonly-randconfig-005-20250415 clang-20 x86_64 buildonly-randconfig-006-20250415 gcc-12 x86_64 defconfig gcc-11 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 1571/1571] block/blk-mq-debugfs.o: warning: objtool: debugfs_rq_show()+0xdf: unreachable instruction
by kernel test robot 16 Apr '25

16 Apr '25

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: d47443532b562cff105f8cfbc32343f83a2ecd01 commit: ad4d7c466e2520aed18679d442b1a16f33b372b8 [1571/1571] blk-mq-debugfs: factor out a new helper to show allocated request config: x86_64-buildonly-randconfig-006-20250408 (https://download.01.org/0day-ci/archive/20250416/202504162155.YWQMdqiA-lkp@…) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250416/202504162155.YWQMdqiA-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/202504162155.YWQMdqiA-lkp@intel.com/ All warnings (new ones prefixed by >>): >> block/blk-mq-debugfs.o: warning: objtool: debugfs_rq_show()+0xdf: unreachable instruction -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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