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[ 11.825783][ T103] aops:shmem_aops ino:8 dentry name:"n2.tmp" [ 11.826808][ T102] Oops: invalid opcode: 0000 [#1] PREEMPT [ 11.827585][ T102] CPU: 0 UID: 0 PID: 102 Comm: udevd Not tainted 6.10.0-12082-gcdc4ad36a871 #1 bef0abbc1afe2d2f07a6410b59dcdae1fe513b9d [ 11.829082][ T102] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 11.830495][ T102] EIP: shmem_write_begin (include/linux/page-flags.h:308) [ 11.831231][ T102] Code: 62 ff ff ff 8b 7d 10 01 f7 89 d3 83 d3 00 39 79 34 8b 79 38 19 df 0f 8d 4a ff ff ff eb cb 89 f0 ba 0b 15 3b c2 e8 ec 60 01 00 <0f> 0b 68 18 5c ad c2 e8 d0 fe 6a 00 89 f0 ba f6 f4 3a c2 e8 d4 60 All code ======== 0: 62 (bad) 1: ff (bad) 2: ff (bad) 3: ff 8b 7d 10 01 f7 decl -0x8feef83(%rbx) 9: 89 d3 mov %edx,%ebx b: 83 d3 00 adc $0x0,%ebx e: 39 79 34 cmp %edi,0x34(%rcx) 11: 8b 79 38 mov 0x38(%rcx),%edi 14: 19 df sbb %ebx,%edi 16: 0f 8d 4a ff ff ff jge 0xffffffffffffff66 1c: eb cb jmp 0xffffffffffffffe9 1e: 89 f0 mov %esi,%eax 20: ba 0b 15 3b c2 mov $0xc23b150b,%edx 25: e8 ec 60 01 00 call 0x16116 2a:* 0f 0b ud2 <-- trapping instruction 2c: 68 18 5c ad c2 push $0xffffffffc2ad5c18 31: e8 d0 fe 6a 00 call 0x6aff06 36: 89 f0 mov %esi,%eax 38: ba f6 f4 3a c2 mov $0xc23af4f6,%edx 3d: e8 .byte 0xe8 3e: d4 (bad) 3f: 60 (bad) Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 68 18 5c ad c2 push $0xffffffffc2ad5c18 7: e8 d0 fe 6a 00 call 0x6afedc c: 89 f0 mov %esi,%eax e: ba f6 f4 3a c2 mov $0xc23af4f6,%edx 13: e8 .byte 0xe8 14: d4 (bad) 15: 60 (bad) [ 11.833693][ T102] EAX: 00000000 EBX: 00000001 ECX: 00000000 EDX: 00000000 [ 11.834656][ T102] ESI: e7a1f820 EDI: ebad5ac0 EBP: eb4fdd20 ESP: eb4fdd10 [ 11.835648][ T102] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 EFLAGS: 00010282 [ 11.836740][ T102] CR0: 80050033 CR2: 00fb121c CR3: 2b40a000 CR4: 000406d0 [ 11.837714][ T102] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 11.838683][ T102] DR6: fffe0ff0 DR7: 00000400 [ 11.839367][ T102] Call Trace: [ 11.839909][ T102] ? __die_body (arch/x86/kernel/dumpstack.c:478 arch/x86/kernel/dumpstack.c:420) [ 11.840561][ T102] ? die (arch/x86/kernel/dumpstack.c:447) [ 11.841150][ T102] ? do_trap (arch/x86/kernel/traps.c:? arch/x86/kernel/traps.c:155) [ 11.841736][ T102] ? do_error_trap (arch/x86/kernel/traps.c:175) [ 11.842383][ T102] ? shmem_write_begin (include/linux/page-flags.h:308) [ 11.843047][ T102] ? shmem_write_begin (include/linux/page-flags.h:308) [ 11.843761][ T102] ? exc_overflow (arch/x86/kernel/traps.c:252) [ 11.844444][ T102] ? handle_invalid_op (arch/x86/kernel/traps.c:212) [ 11.845176][ T102] ? shmem_write_begin (include/linux/page-flags.h:308) [ 11.845918][ T102] ? exc_invalid_op (arch/x86/kernel/traps.c:267) [ 11.846634][ T102] ? handle_exception (arch/x86/entry/entry_32.S:1047) [ 11.847347][ T102] ? lru_lazyfree_fn (include/linux/list.h:124 include/linux/list.h:215 include/linux/list.h:229 include/linux/mm_inline.h:355 mm/swap.c:633) [ 11.848042][ T102] ? exc_overflow (arch/x86/kernel/traps.c:252) [ 11.848686][ T102] ? shmem_write_begin (include/linux/page-flags.h:308) [ 11.849348][ T102] ? lru_lazyfree_fn (include/linux/list.h:124 include/linux/list.h:215 include/linux/list.h:229 include/linux/mm_inline.h:355 mm/swap.c:633) [ 11.850008][ T102] ? exc_overflow (arch/x86/kernel/traps.c:252) [ 11.850650][ T102] ? shmem_write_begin (include/linux/page-flags.h:308) [ 11.851371][ T102] generic_perform_write (mm/filemap.c:4018) [ 11.852110][ T102] shmem_file_write_iter (mm/shmem.c:?) [ 11.852790][ T102] vfs_write (fs/read_write.c:498) [ 11.853346][ T102] ? kmem_cache_free (mm/slub.c:4425) [ 11.853945][ T102] ? shmem_file_read_iter (mm/shmem.c:3061) [ 11.854693][ T102] ksys_write (fs/read_write.c:643) [ 11.855325][ T102] __ia32_sys_write (fs/read_write.c:652) [ 11.856005][ T102] ia32_sys_call (arch/x86/entry/syscall_32.c:44) [ 11.856683][ T102] do_int80_syscall_32 (arch/x86/entry/common.c:?) [ 11.857375][ T102] ? syscall_exit_to_user_mode (kernel/entry/common.c:221) [ 11.858131][ T102] ? do_int80_syscall_32 (arch/x86/entry/common.c:343) [ 11.858864][ T102] ? free_to_partial_list (mm/slub.c:4265) [ 11.859637][ T102] ? __slab_free (mm/slub.c:4291) [ 11.860288][ T102] ? do_mkdirat (fs/namei.c:4243) [ 11.860926][ T102] ? mntput_no_expire (fs/namespace.c:1460) [ 11.861609][ T102] ? kmem_cache_free (mm/slub.c:4425) [ 11.865615][ T102] ? do_mkdirat (fs/namei.c:4243) [ 11.866331][ T102] ? do_mkdirat (fs/namei.c:4243) [ 11.866989][ T102] ? syscall_exit_to_user_mode (kernel/entry/common.c:221) [ 11.867783][ T102] ? do_int80_syscall_32 (arch/x86/entry/common.c:343) [ 11.868435][ T102] ? irqentry_exit_to_user_mode (kernel/entry/common.c:234) [ 11.869221][ T102] ? do_fast_syscall_32 (arch/x86/entry/common.c:411) [ 11.869855][ T102] entry_INT80_32 (arch/x86/entry/entry_32.S:944) [ 11.870507][ T102] EIP: 0xb7e536c2 [ 11.871050][ T102] Code: 90 66 90 66 90 66 90 90 56 53 83 ec 14 8b 5c 24 20 8b 4c 24 24 8b 54 24 28 65 a1 0c 00 00 00 85 c0 75 15 b8 04 00 00 00 cd 80 <3d> 00 f0 ff ff 77 47 83 c4 14 5b 5e c3 90 89 54 24 0c 89 4c 24 08 All code ======== 0: 90 nop 1: 66 90 xchg %ax,%ax 3: 66 90 xchg %ax,%ax 5: 66 90 xchg %ax,%ax 7: 90 nop 8: 56 push %rsi 9: 53 push %rbx a: 83 ec 14 sub $0x14,%esp d: 8b 5c 24 20 mov 0x20(%rsp),%ebx 11: 8b 4c 24 24 mov 0x24(%rsp),%ecx 15: 8b 54 24 28 mov 0x28(%rsp),%edx 19: 65 a1 0c 00 00 00 85 movabs %gs:0x1575c0850000000c,%eax 20: c0 75 15 23: b8 04 00 00 00 mov $0x4,%eax 28: cd 80 int $0x80 2a:* 3d 00 f0 ff ff cmp $0xfffff000,%eax <-- trapping instruction 2f: 77 47 ja 0x78 31: 83 c4 14 add $0x14,%esp 34: 5b pop %rbx 35: 5e pop %rsi 36: c3 ret 37: 90 nop 38: 89 54 24 0c mov %edx,0xc(%rsp) 3c: 89 4c 24 08 mov %ecx,0x8(%rsp) Code starting with the faulting instruction =========================================== 0: 3d 00 f0 ff ff cmp $0xfffff000,%eax 5: 77 47 ja 0x4e 7: 83 c4 14 add $0x14,%esp a: 5b pop %rbx b: 5e pop %rsi c: c3 ret d: 90 nop e: 89 54 24 0c mov %edx,0xc(%rsp) 12: 89 4c 24 08 mov %ecx,0x8(%rsp) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240806/202408062249.2194d51b-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki