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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: hi, Suren Baghdasaryan and all, we know that this commit is not the root cause of the WARNING. it just changes the WARNING stats bot captured. fd942e78294214c8 0d1ae800a1923762d8240dc4987 ---------------- --------------------------- fail:runs %reproduction fail:runs | | | :6 50% 3:6 dmesg.WARNING:at_include/linux/alloc_tag.h:#__pgalloc_tag_sub 6:6 -100% :6 dmesg.WARNING:at_include/linux/alloc_tag.h:#pgalloc_tag_sub we made out this report just FYI, in case anybody has interests to look further about this existing WARNING. below is full report. Hello, kernel test robot noticed "WARNING:at_include/linux/alloc_tag.h:#__pgalloc_tag_sub" on: commit: 0d1ae800a1923762d8240dc4987761f29a35d1a9 ("alloc_tag: uninline code gated by mem_alloc_profiling_key in page allocator") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master [test failed on linux-next/master 7b7a883c7f4de1ee5040bd1c32aabaafde54d209] in testcase: trinity version: trinity-i386-abe9de86-1_20230429 with following parameters: runtime: 300s group: group-02 nr_groups: 5 config: x86_64-randconfig-071-20250210 compiler: clang-19 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) 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 | Closes: https://lore.kernel.org/oe-lkp/202502141006.21ae07ee-lkp@intel.com [ 115.486807][ T6579] ------------[ cut here ]------------ [ 115.487378][ T6579] alloc_tag was not set [ 115.487709][ T6579] WARNING: CPU: 0 PID: 6579 at include/linux/alloc_tag.h:152 __pgalloc_tag_sub (include/linux/alloc_tag.h:152) [ 115.488409][ T6579] Modules linked in: 8021q mrp garp stp qrtr nfc caif_socket caif phonet llc2 llc sha1_ssse3 serio_raw tiny_power_button button [ 115.489418][ T6579] CPU: 0 UID: 0 PID: 6579 Comm: date Tainted: G T 6.14.0-rc2-00048-g0d1ae800a192 #1 2337137258306bf95f42324e33e4040ee055b8c6 [ 115.490636][ T6579] Tainted: [T]=RANDSTRUCT [ 115.490962][ T6579] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 115.491699][ T6579] RIP: 0010:__pgalloc_tag_sub (include/linux/alloc_tag.h:152) [ 115.492110][ T6579] Code: 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 90 0f 0b 90 eb eb c6 05 0b ed 01 03 01 48 c7 c7 20 76 f2 ad 90 e8 81 7e c0 ff 90 <0f> 0b 90 90 4c 8b 7d d0 4d 85 ff 0f 85 25 ff ff ff e9 72 ff ff ff All code ======== 0: 48 83 c4 08 add $0x8,%rsp 4: 5b pop %rbx 5: 41 5c pop %r12 7: 41 5d pop %r13 9: 41 5e pop %r14 b: 41 5f pop %r15 d: 5d pop %rbp e: c3 ret f: 90 nop 10: 0f 0b ud2 12: 90 nop 13: eb eb jmp 0x0 15: c6 05 0b ed 01 03 01 movb $0x1,0x301ed0b(%rip) # 0x301ed27 1c: 48 c7 c7 20 76 f2 ad mov $0xffffffffadf27620,%rdi 23: 90 nop 24: e8 81 7e c0 ff call 0xffffffffffc07eaa 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 4c 8b 7d d0 mov -0x30(%rbp),%r15 32: 4d 85 ff test %r15,%r15 35: 0f 85 25 ff ff ff jne 0xffffffffffffff60 3b: e9 72 ff ff ff jmp 0xffffffffffffffb2 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 4c 8b 7d d0 mov -0x30(%rbp),%r15 8: 4d 85 ff test %r15,%r15 b: 0f 85 25 ff ff ff jne 0xffffffffffffff36 11: e9 72 ff ff ff jmp 0xffffffffffffff88 [ 115.493423][ T6579] RSP: 0000:ffff888137d8f340 EFLAGS: 00010286 [ 115.493859][ T6579] RAX: 0000000000000015 RBX: ffff8881064018f8 RCX: 0000000000000000 [ 115.494407][ T6579] RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001 [ 115.494963][ T6579] RBP: ffff888137d8f370 R08: ffffffffaef2cdb3 R09: 1ffffffff5de59b6 [ 115.495520][ T6579] R10: dffffc0000000000 R11: fffffbfff5de59b7 R12: ffffea00040013d8 [ 115.496063][ T6579] R13: dffffc0000000000 R14: 0000000000001000 R15: 0000000000000000 [ 115.496621][ T6579] FS: 0000000000000000(0000) GS:ffffffffaeabf000(0000) knlGS:0000000000000000 [ 115.497251][ T6579] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 115.497706][ T6579] CR2: 00000000ff941ee0 CR3: 0000000127139000 CR4: 00000000000406b0 [ 115.498261][ T6579] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 115.498840][ T6579] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 115.499429][ T6579] Call Trace: [ 115.499681][ T6579] [ 115.499913][ T6579] ? show_regs (arch/x86/kernel/dumpstack.c:479) [ 115.500340][ T6579] ? __warn (kernel/panic.c:748) [ 115.500642][ T6579] ? __pgalloc_tag_sub (include/linux/alloc_tag.h:152) [ 115.501001][ T6579] ? __pgalloc_tag_sub (include/linux/alloc_tag.h:152) [ 115.501369][ T6579] ? report_bug (lib/bug.c:?) [ 115.501693][ T6579] ? handle_bug (arch/x86/kernel/traps.c:285) [ 115.502002][ T6579] ? exc_invalid_op (arch/x86/kernel/traps.c:309) [ 115.502337][ T6579] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621) [ 115.502715][ T6579] ? __pgalloc_tag_sub (include/linux/alloc_tag.h:152) [ 115.503097][ T6579] free_frozen_pages (include/linux/mm.h:2250 mm/page_alloc.c:1210 mm/page_alloc.c:2738) [ 115.503472][ T6579] __free_slab (mm/slub.c:2669) [ 115.503801][ T6579] free_slab (mm/slub.c:2692) [ 115.504112][ T6579] discard_slab (mm/slub.c:2698) [ 115.504434][ T6579] __slab_free (mm/slub.c:?) [ 115.504772][ T6579] ? qlist_free_all (mm/kasan/quarantine.c:163) [ 115.505111][ T6579] ___cache_free (mm/slub.c:4575) [ 115.505447][ T6579] qlist_free_all (mm/kasan/quarantine.c:174) [ 115.505777][ T6579] kasan_quarantine_reduce (mm/kasan/quarantine.c:287) [ 115.506170][ T6579] __kasan_slab_alloc (mm/kasan/common.c:331) [ 115.506526][ T6579] kmem_cache_alloc_noprof (mm/slub.c:4129) [ 115.506911][ T6579] ? vm_area_dup (include/linux/sched.h:2248) [ 115.507234][ T6579] vm_area_dup (include/linux/sched.h:2248) [ 115.507551][ T6579] __split_vma (mm/vma.c:481) [ 115.507889][ T6579] vms_gather_munmap_vmas (mm/vma.c:1307) [ 115.508307][ T6579] mmap_region (mm/vma.c:2259) [ 115.508610][ T6579] ? __kasan_check_read (mm/kasan/shadow.c:31) [ 115.508961][ T6579] ? validate_chain (arch/x86/include/asm/bitops.h:227 arch/x86/include/asm/bitops.h:239 include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:230 kernel/locking/lockdep.c:3818 kernel/locking/lockdep.c:3874) [ 115.509301][ T6579] ? perf_event_mmap (kernel/events/core.c:9193) [ 115.509759][ T6579] do_mmap (mm/mmap.c:561) [ 115.510073][ T6579] vm_mmap_pgoff (mm/util.c:575) [ 115.510467][ T6579] ksys_mmap_pgoff (mm/mmap.c:607) [ 115.510820][ T6579] __ia32_sys_mmap_pgoff (mm/mmap.c:614) [ 115.511197][ T6579] ia32_sys_call (kbuild/obj/consumer/x86_64-randconfig-071-20250210/./arch/x86/include/generated/asm/syscalls_32.h:317) [ 115.511542][ T6579] do_int80_emulation (arch/x86/entry/common.c:?) [ 115.511914][ T6579] ? up_write (arch/x86/include/asm/preempt.h:103 kernel/locking/rwsem.c:1375 kernel/locking/rwsem.c:1630) [ 115.512237][ T6579] ? vm_mmap_pgoff (mm/util.c:579) [ 115.512587][ T6579] ? fput (arch/x86/include/asm/preempt.h:103 include/linux/preempt.h:480 include/linux/file_ref.h:161 fs/file_table.c:516) [ 115.512885][ T6579] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 115.513279][ T6579] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4470) [ 115.513639][ T6579] ? syscall_exit_to_user_mode (kernel/entry/common.c:221) [ 115.514057][ T6579] ? do_int80_emulation (arch/x86/entry/common.c:257) [ 115.514418][ T6579] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 115.514793][ T6579] ? trace_hardirqs_off_finish (include/trace/events/preemptirq.h:36) [ 115.515191][ T6579] ? do_int80_emulation (include/linux/entry-common.h:118) [ 115.515553][ T6579] asm_int80_emulation (arch/x86/include/asm/idtentry.h:626) [ 115.515906][ T6579] RIP: 0023:0xf7f7ccb0 [ 115.516201][ T6579] Code: 4c 24 34 89 44 24 0c 8b 44 24 44 8b 54 24 38 8b 74 24 3c 8b 7c 24 40 a9 ff 0f 00 00 75 1c c1 e8 0c 89 c5 b8 c0 00 00 00 cd 80 <3d> 00 f0 ff ff 77 21 83 c4 1c 5b 5e 5f 5d c3 90 83 c4 1c b8 ea ff All code ======== 0: 4c 24 34 rex.WR and $0x34,%al 3: 89 44 24 0c mov %eax,0xc(%rsp) 7: 8b 44 24 44 mov 0x44(%rsp),%eax b: 8b 54 24 38 mov 0x38(%rsp),%edx f: 8b 74 24 3c mov 0x3c(%rsp),%esi 13: 8b 7c 24 40 mov 0x40(%rsp),%edi 17: a9 ff 0f 00 00 test $0xfff,%eax 1c: 75 1c jne 0x3a 1e: c1 e8 0c shr $0xc,%eax 21: 89 c5 mov %eax,%ebp 23: b8 c0 00 00 00 mov $0xc0,%eax 28: cd 80 int $0x80 2a:* 3d 00 f0 ff ff cmp $0xfffff000,%eax <-- trapping instruction 2f: 77 21 ja 0x52 31: 83 c4 1c add $0x1c,%esp 34: 5b pop %rbx 35: 5e pop %rsi 36: 5f pop %rdi 37: 5d pop %rbp 38: c3 ret 39: 90 nop 3a: 83 c4 1c add $0x1c,%esp 3d: b8 .byte 0xb8 3e: ea (bad) 3f: ff .byte 0xff Code starting with the faulting instruction =========================================== 0: 3d 00 f0 ff ff cmp $0xfffff000,%eax 5: 77 21 ja 0x28 7: 83 c4 1c add $0x1c,%esp a: 5b pop %rbx b: 5e pop %rsi c: 5f pop %rdi d: 5d pop %rbp e: c3 ret f: 90 nop 10: 83 c4 1c add $0x1c,%esp 13: b8 .byte 0xb8 14: ea (bad) 15: ff .byte 0xff The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250214/202502141006.21ae07ee-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki