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This should not happen! [ 6.699377][ T1] WARNING: CPU: 0 PID: 1 at arch/x86/kernel/cpu/bugs.c:3023 __warn_thunk (arch/x86/kernel/cpu/bugs.c:3023) [ 6.699604][ T1] Modules linked in: [ 6.699937][ T1] CPU: 0 PID: 1 Comm: swapper Not tainted 6.10.0-rc4-00198-g8d61d01cdec2 #1 [ 6.700668][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 6.701548][ T1] RIP: 0010:__warn_thunk (arch/x86/kernel/cpu/bugs.c:3023) [ 6.701983][ T1] Code: 1f 44 00 00 80 3d dd fb e3 03 00 74 08 31 ff c3 cc cc cc cc cc c6 05 cc fb e3 03 01 90 48 c7 c7 40 b0 a1 83 e8 76 c6 13 00 90 <0f> 0b 90 90 31 ff c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc b8 All code ======== 0: 1f (bad) 1: 44 00 00 add %r8b,(%rax) 4: 80 3d dd fb e3 03 00 cmpb $0x0,0x3e3fbdd(%rip) # 0x3e3fbe8 b: 74 08 je 0x15 d: 31 ff xor %edi,%edi f: c3 ret 10: cc int3 11: cc int3 12: cc int3 13: cc int3 14: cc int3 15: c6 05 cc fb e3 03 01 movb $0x1,0x3e3fbcc(%rip) # 0x3e3fbe8 1c: 90 nop 1d: 48 c7 c7 40 b0 a1 83 mov $0xffffffff83a1b040,%rdi 24: e8 76 c6 13 00 call 0x13c69f 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: 31 ff xor %edi,%edi 30: c3 ret 31: cc int3 32: cc int3 33: cc int3 34: cc int3 35: cc int3 36: cc int3 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: cc int3 3c: cc int3 3d: cc int3 3e: cc int3 3f: b8 .byte 0xb8 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: 31 ff xor %edi,%edi 6: c3 ret 7: cc int3 8: cc int3 9: cc int3 a: cc int3 b: cc int3 c: cc int3 d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: cc int3 12: cc int3 13: cc int3 14: cc int3 15: b8 .byte 0xb8 [ 6.703602][ T1] RSP: 0000:ffffc9000001fe88 EFLAGS: 00010246 [ 6.704116][ T1] RAX: 0000000000000000 RBX: ffffffff856a96a0 RCX: 0000000000000000 [ 6.704787][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 6.705462][ T1] RBP: ffffc9000001fed8 R08: 0000000000000000 R09: 0000000000000000 [ 6.706134][ T1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 6.706804][ T1] R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff856a96a0 [ 6.707476][ T1] FS: 0000000000000000(0000) GS:ffffffff844a7000(0000) knlGS:0000000000000000 [ 6.707601][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6.708157][ T1] CR2: ffff88843ffff000 CR3: 000000000446c000 CR4: 00000000000406f0 [ 6.708834][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 6.709505][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 6.710174][ T1] Call Trace: [ 6.710452][ T1] [ 6.710701][ T1] ? __warn (kernel/panic.c:239 kernel/panic.c:693) [ 6.711054][ T1] ? __warn_thunk (arch/x86/kernel/cpu/bugs.c:3023) [ 6.711434][ T1] ? __warn_thunk (arch/x86/kernel/cpu/bugs.c:3023) [ 6.711604][ T1] ? report_bug (lib/bug.c:?) [ 6.711991][ T1] ? handle_bug (arch/x86/kernel/traps.c:239) [ 6.712357][ T1] ? exc_invalid_op (arch/x86/kernel/traps.c:260) [ 6.712759][ T1] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621) [ 6.713193][ T1] ? __warn_thunk (arch/x86/kernel/cpu/bugs.c:3023) [ 6.713575][ T1] ? __warn_thunk (arch/x86/kernel/cpu/bugs.c:3023) [ 6.713956][ T1] warn_thunk_thunk (arch/x86/entry/entry.S:48) [ 6.714352][ T1] ? __cfi_asan.module_ctor (main.c:?) [ 6.714810][ T1] do_basic_setup (init/main.c:1126 init/main.c:1363) [ 6.715194][ T1] kernel_init_freeable (init/main.c:1582) [ 6.715602][ T1] ? __cfi_kernel_init (init/main.c:1459) [ 6.716022][ T1] kernel_init (init/main.c:1469) [ 6.716389][ T1] ret_from_fork (arch/x86/kernel/process.c:153) [ 6.716769][ T1] ? __cfi_kernel_init (init/main.c:1459) [ 6.717187][ T1] ret_from_fork_asm (arch/x86/entry/entry_64.S:257) [ 6.717600][ T1] [ 6.717856][ T1] irq event stamp: 14123 [ 6.718213][ T1] hardirqs last enabled at (14131): console_unlock (arch/x86/include/asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:77 arch/x86/include/asm/irqflags.h:135 kernel/printk/printk.c:341 kernel/printk/printk.c:2746 kernel/printk/printk.c:3065) [ 6.719011][ T1] hardirqs last disabled at (14138): console_unlock (kernel/printk/printk.c:339) [ 6.719601][ T1] softirqs last enabled at (2244): irq_exit_rcu (kernel/softirq.c:651) [ 6.720366][ T1] softirqs last disabled at (2235): irq_exit_rcu (kernel/softirq.c:651) [ 6.721120][ T1] ---[ end trace 0000000000000000 ]--- The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240716/202407161520.ee3d9347-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki