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[ 186.822391][ T67] Code: 8d 54 f0 14 8d 0c 89 8d 4c c8 0c 89 4d e8 31 db 89 45 ec 89 55 f0 eb 24 90 90 90 90 90 c1 e6 04 8b 44 31 04 29 d0 89 d1 03 01 <89> 02 43 8b 55 f0 8b 02 c1 e8 03 39 c3 8b 45 ec 73 3a 8b 4a 08 8d All code ======== 0: 8d 54 f0 14 lea 0x14(%rax,%rsi,8),%edx 4: 8d 0c 89 lea (%rcx,%rcx,4),%ecx 7: 8d 4c c8 0c lea 0xc(%rax,%rcx,8),%ecx b: 89 4d e8 mov %ecx,-0x18(%rbp) e: 31 db xor %ebx,%ebx 10: 89 45 ec mov %eax,-0x14(%rbp) 13: 89 55 f0 mov %edx,-0x10(%rbp) 16: eb 24 jmp 0x3c 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: c1 e6 04 shl $0x4,%esi 20: 8b 44 31 04 mov 0x4(%rcx,%rsi,1),%eax 24: 29 d0 sub %edx,%eax 26: 89 d1 mov %edx,%ecx 28: 03 01 add (%rcx),%eax 2a:* 89 02 mov %eax,(%rdx) <-- trapping instruction 2c: 43 8b 55 f0 rex.XB mov -0x10(%r13),%edx 30: 8b 02 mov (%rdx),%eax 32: c1 e8 03 shr $0x3,%eax 35: 39 c3 cmp %eax,%ebx 37: 8b 45 ec mov -0x14(%rbp),%eax 3a: 73 3a jae 0x76 3c: 8b 4a 08 mov 0x8(%rdx),%ecx 3f: 8d .byte 0x8d Code starting with the faulting instruction =========================================== 0: 89 02 mov %eax,(%rdx) 2: 43 8b 55 f0 rex.XB mov -0x10(%r13),%edx 6: 8b 02 mov (%rdx),%eax 8: c1 e8 03 shr $0x3,%eax b: 39 c3 cmp %eax,%ebx d: 8b 45 ec mov -0x14(%rbp),%eax 10: 73 3a jae 0x4c 12: 8b 4a 08 mov 0x8(%rdx),%ecx 15: 8d .byte 0x8d [ 186.823986][ T67] EAX: bbd19ccc EBX: 00000000 ECX: ef063258 EDX: ef20095d [ 186.824574][ T67] ESI: 00000250 EDI: 00000001 EBP: e14a3d8c ESP: e14a3d70 [ 186.825153][ T67] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 EFLAGS: 00010287 [ 186.825775][ T67] CR0: 80050033 CR2: ef20095d CR3: 0134adc0 CR4: 000406b0 [ 186.826356][ T67] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 186.826936][ T67] DR6: fffe0ff0 DR7: 00000400 [ 186.827317][ T67] Call Trace: [ 186.827584][ T67] ? __die_body (arch/x86/kernel/dumpstack.c:478 arch/x86/kernel/dumpstack.c:420) [ 186.827941][ T67] ? __die (arch/x86/kernel/dumpstack.c:434) [ 186.828266][ T67] ? page_fault_oops (arch/x86/mm/fault.c:709) [ 186.828672][ T67] ? kernelmode_fixup_or_oops (arch/x86/mm/fault.c:767) [ 186.829126][ T67] ? __bad_area_nosemaphore (arch/x86/mm/fault.c:814) [ 186.829572][ T67] ? bad_area_nosemaphore (arch/x86/mm/fault.c:863) [ 186.829990][ T67] ? do_kern_addr_fault (arch/x86/mm/fault.c:1223) [ 186.830400][ T67] ? exc_page_fault (arch/x86/mm/fault.c:?) [ 186.830783][ T67] ? pvclock_clocksource_read_nowd (arch/x86/mm/fault.c:1518) [ 186.831287][ T67] ? handle_exception (arch/x86/entry/entry_32.S:1047) [ 186.831698][ T67] ? pvclock_clocksource_read_nowd (arch/x86/mm/fault.c:1518) [ 186.832201][ T67] ? apply_relocate (arch/x86/kernel/module.c:?) [ 186.832557][ T67] ? pvclock_clocksource_read_nowd (arch/x86/mm/fault.c:1518) [ 186.833023][ T67] ? apply_relocate (arch/x86/kernel/module.c:?) [ 186.833379][ T67] apply_relocations (kernel/module/main.c:1508) [ 186.833740][ T67] load_module (kernel/module/main.c:2987) [ 186.834089][ T67] __ia32_sys_init_module (kernel/module/main.c:3125 kernel/module/main.c:3105 kernel/module/main.c:3105) [ 186.834497][ T67] ia32_sys_call (arch/x86/entry/syscall_32.c:42) [ 186.834857][ T67] do_int80_syscall_32 (arch/x86/entry/common.c:?) [ 186.835230][ T67] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 186.835643][ T67] ? lock_release (kernel/locking/lockdep.c:467) [ 186.835997][ T67] ? insert_page_into_pte_locked (include/linux/rcupdate.h:338) [ 186.836461][ T67] ? rcu_lock_release (include/linux/rcupdate.h:340) [ 186.836828][ T67] ? handle_mm_fault (mm/memory.c:4886) [ 186.837209][ T67] ? do_user_addr_fault (include/linux/mmap_lock.h:?) [ 186.837601][ T67] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 186.838013][ T67] ? lock_release (kernel/locking/lockdep.c:467) [ 186.838365][ T67] ? do_user_addr_fault (include/linux/mmap_lock.h:?) [ 186.838757][ T67] ? irqentry_exit (kernel/entry/common.c:367) [ 186.839104][ T67] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 186.839517][ T67] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4421) [ 186.839911][ T67] ? irqentry_exit_to_user_mode (kernel/entry/common.c:234) [ 186.840353][ T67] ? irqentry_exit (kernel/entry/common.c:367) [ 186.840700][ T67] ? exc_page_fault (arch/x86/mm/fault.c:1567) [ 186.841056][ T67] entry_INT80_32 (arch/x86/entry/entry_32.S:944) [ 186.841411][ T67] EIP: 0xb7fb31b2 [ 186.841685][ T67] Code: 89 c2 31 c0 89 d7 f3 aa 8b 44 24 1c 89 30 c6 40 04 00 83 c4 2c 89 f0 5b 5e 5f 5d c3 90 90 90 90 90 90 90 90 90 90 90 90 cd 80 8d b6 00 00 00 00 8d bc 27 00 00 00 00 8b 1c 24 c3 8d b6 00 00 All code ======== 0: 89 c2 mov %eax,%edx 2: 31 c0 xor %eax,%eax 4: 89 d7 mov %edx,%edi 6: f3 aa rep stos %al,%es:(%rdi) 8: 8b 44 24 1c mov 0x1c(%rsp),%eax c: 89 30 mov %esi,(%rax) e: c6 40 04 00 movb $0x0,0x4(%rax) 12: 83 c4 2c add $0x2c,%esp 15: 89 f0 mov %esi,%eax 17: 5b pop %rbx 18: 5e pop %rsi 19: 5f pop %rdi 1a: 5d pop %rbp 1b: c3 ret 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 90 nop 27: 90 nop 28: cd 80 int $0x80 2a:* c3 ret <-- trapping instruction 2b: 8d b6 00 00 00 00 lea 0x0(%rsi),%esi 31: 8d bc 27 00 00 00 00 lea 0x0(%rdi,%riz,1),%edi 38: 8b 1c 24 mov (%rsp),%ebx 3b: c3 ret 3c: 8d .byte 0x8d 3d: b6 00 mov $0x0,%dh ... Code starting with the faulting instruction =========================================== 0: c3 ret 1: 8d b6 00 00 00 00 lea 0x0(%rsi),%esi 7: 8d bc 27 00 00 00 00 lea 0x0(%rdi,%riz,1),%edi e: 8b 1c 24 mov (%rsp),%ebx 11: c3 ret 12: 8d .byte 0x8d 13: b6 00 mov $0x0,%dh The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240510/202405101709.37715bca-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki