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X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR11MB7542 X-OriginatorOrg: intel.com Hello, as we understand, by this commit, the stat (1) becomes stat (2)(3) are expected and can supply more information. 0e271227ed4ba41e 1d1c158ece6cb7538026233d002 ---------------- --------------------------- fail:runs %reproduction fail:runs | | | 6:6 -100% :6 dmesg.WARNING:CPU:#PID:#at__seccomp_filter <----- (1) :6 100% 6:6 dmesg.WARNING:at__seccomp_filter,CPU##:systemd-journal <----- (2) :6 100% 6:6 dmesg.WARNING:at__seccomp_filter,CPU##:systemd-udevd <----- (3) however, we failed to bisect stat (1) so cannot capture the real first bad commit for the WARNING. we still make out this report FYI there is a WARNING captured in our tests. kernel test robot noticed "WARNING:at__seccomp_filter,CPU##:systemd-journal" on: commit: 1d1c158ece6cb7538026233d0020b18e183d39a9 ("bugs/core: Reorganize fields in the first line of WARNING output, add ->comm[] output") https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git core/bugs [test failed on linux-next/master d086c886ceb9f59dea6c3a9dae7eb89e780a20c9] in testcase: boot config: x86_64-randconfig-104-20250717 compiler: clang-20 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/202507220719.dc58fb69-lkp@intel.com [ 106.315928][ T80] WARNING: at __seccomp_filter+0x200/0xac0, CPU#1: systemd-journal/80 [ 106.316776][ T80] Modules linked in: autofs4 [ 106.316807][ T80] CPU: 1 UID: 0 PID: 80 Comm: systemd-journal Not tainted 6.16.0-rc1-00016-g1d1c158ece6c #1 NONE [ 106.316820][ T80] RIP: 0010:__seccomp_filter (include/linux/bpf.h:1322 include/linux/filter.h:718 include/linux/filter.h:725 include/linux/filter.h:742 kernel/seccomp.c:424 kernel/seccomp.c:1258) [ 106.318660][ T80] Code: 26 55 ea ff 66 90 e8 9f 20 ff ff 4d 8b 5e 30 49 83 c6 48 48 8d bc 24 c8 00 00 00 4c 89 f6 41 ba ee f2 9c cf 45 03 53 c1 74 02 <0f> 0b 41 ff d3 0f 1f 00 41 89 c5 e8 30 d6 e9 ff 45 89 ee 41 81 e6 All code ======== 0: 26 55 es push %rbp 2: ea (bad) 3: ff 66 90 jmp *-0x70(%rsi) 6: e8 9f 20 ff ff call 0xffffffffffff20aa b: 4d 8b 5e 30 mov 0x30(%r14),%r11 f: 49 83 c6 48 add $0x48,%r14 13: 48 8d bc 24 c8 00 00 lea 0xc8(%rsp),%rdi 1a: 00 1b: 4c 89 f6 mov %r14,%rsi 1e: 41 ba ee f2 9c cf mov $0xcf9cf2ee,%r10d 24: 45 03 53 c1 add -0x3f(%r11),%r10d 28: 74 02 je 0x2c 2a:* 0f 0b ud2 <-- trapping instruction 2c: 41 ff d3 call *%r11 2f: 0f 1f 00 nopl (%rax) 32: 41 89 c5 mov %eax,%r13d 35: e8 30 d6 e9 ff call 0xffffffffffe9d66a 3a: 45 89 ee mov %r13d,%r14d 3d: 41 rex.B 3e: 81 .byte 0x81 3f: e6 .byte 0xe6 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 41 ff d3 call *%r11 5: 0f 1f 00 nopl (%rax) 8: 41 89 c5 mov %eax,%r13d b: e8 30 d6 e9 ff call 0xffffffffffe9d640 10: 45 89 ee mov %r13d,%r14d 13: 41 rex.B 14: 81 .byte 0x81 15: e6 .byte 0xe6 1;39mKernel Trac[ 106.321891][ T80] RDX: 0000000000000000 RSI: ffffc90000075048 RDI: ffffc900012a3d40 m.[ 106.323652][ T80] R10: 00000000cfa1f2ef R11: ffffffffa0000d58 R12: ffff8881a8e18600 [ 106.328424][ T80] R13: ffffc900012a3f70 R14: ffffc90000075048 R15: 000000007fff0000 [ 106.329818][ T80] FS: 0000000000000000(0000) GS:ffff8884ab26d000(0000) knlGS:0000000000000000 [ 106.331921][ T80] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 106.332829][ T80] CR2: 00000000f7fcd01c CR3: 000000017d202000 CR4: 00000000000406b0 [ 106.334346][ T80] Call Trace: [ 106.334870][ T80] [ 106.335399][ T80] ? __free_frozen_pages (arch/x86/include/asm/preempt.h:85 (discriminator 9) mm/page_alloc.c:2735 (discriminator 9)) [ 106.337400][ T80] ? _raw_spin_unlock (arch/x86/include/asm/preempt.h:85 (discriminator 9) include/linux/spinlock_api_smp.h:143 (discriminator 9) kernel/locking/spinlock.c:186 (discriminator 9)) [ 106.338252][ T80] ? __free_frozen_pages (arch/x86/include/asm/preempt.h:85 (discriminator 9) mm/page_alloc.c:2735 (discriminator 9)) [ 106.339163][ T80] ? slab_free (mm/slub.c:4645) [ 106.339936][ T80] syscall_trace_enter (kernel/entry/common.c:53) [ 106.340888][ T80] ? asm_int80_emulation (arch/x86/include/asm/idtentry.h:626) [ 106.341785][ T80] do_int80_emulation (include/linux/entry-common.h:170 arch/x86/entry/syscall_32.c:171) [ 106.342700][ T80] ? asm_int80_emulation (arch/x86/include/asm/idtentry.h:626) [ 106.343611][ T80] ? do_int80_emulation (arch/x86/entry/syscall_32.c:176) [ 106.344554][ T80] ? do_user_addr_fault (include/linux/mmap_lock.h:?) [ 106.345555][ T80] ? do_user_addr_fault (arch/x86/mm/fault.c:1441 (discriminator 335708160)) [ 106.346550][ T80] ? trace_hardirqs_off_finish (include/trace/events/preemptirq.h:36 (discriminator 8)) [ 106.347721][ T80] ? do_int80_emulation (arch/x86/include/asm/jump_label.h:36 arch/x86/entry/syscall_32.c:148) [ 106.362839][ T80] asm_int80_emulation (arch/x86/include/asm/idtentry.h:626) [ 106.363662][ T80] RIP: 0023:0xf7febcb0 [ 106.364393][ T80] 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 [ 106.367884][ T80] RSP: 002b:00000000ffd23590 EFLAGS: 00000246 ORIG_RAX: 00000000000000c0 [ 106.369233][ T80] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000002000 [ 106.370445][ T80] RDX: 0000000000000003 RSI: 0000000000000022 RDI: 00000000ffffffff [ 106.371662][ T80] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 106.372873][ T80] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 106.374069][ T80] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 106.375321][ T80] [ 106.375877][ T80] irq event stamp: 7205 [ 106.376550][ T80] hardirqs last enabled at (7213): __console_unlock (arch/x86/include/asm/irqflags.h:19 arch/x86/include/asm/irqflags.h:109 arch/x86/include/asm/irqflags.h:151 kernel/printk/printk.c:344 kernel/printk/printk.c:2885) [ 106.378146][ T80] hardirqs last disabled at (7230): __console_unlock (kernel/printk/printk.c:342 (discriminator 9) kernel/printk/printk.c:2885 (discriminator 9)) [ 106.379717][ T80] softirqs last enabled at (7228): __irq_exit_rcu (arch/x86/include/asm/jump_label.h:36 kernel/softirq.c:682) [ 106.381286][ T80] softirqs last disabled at (7221): __irq_exit_rcu (arch/x86/include/asm/jump_label.h:36 kernel/softirq.c:682) [ 106.382872][ T80] ---[ end trace 0000000000000000 ]--- [ 106.384045][ T80] CFI failure at __seccomp_filter+0x200/0xac0 (target: 0xffffffffa0000cdc; expected type: 0x30630d12 The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250722/202507220719.dc58fb69-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki