====================================== | xx__-> echo $? | 0 | xx__-> [ 328.387396] Mirror/redirect action on | [ 339.247075] irq 4: nobody cared (try booting with the "irqpoll" option) [ 339.247271] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 339.247371] Call Trace: [ 339.247402] [ 339.247427] dump_stack_lvl (lib/dump_stack.c:117) [ 339.247475] __report_bad_irq (kernel/irq/spurious.c:214) [ 339.247511] note_interrupt (kernel/irq/spurious.c:423) [ 339.247547] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) [ 339.247583] handle_edge_irq (kernel/irq/chip.c:833) [ 339.247620] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:247 arch/x86/kernel/irq.c:259 arch/x86/kernel/irq.c:285) [ 339.247655] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14)) [ 339.247697] [ 339.247719] [ 339.247739] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) [ 339.247778] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) [ 339.247822] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 c6 07 00 f7 c6 00 02 00 00 74 01 fb 65 ff 0d ec e5 6a 45 <74> 05 c3 cc cc cc cc 0f 1f 44 00 00 c3 cc cc cc cc 0f 1f 00 90 90 All code ======== 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: f3 0f 1e fa endbr64 12: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 17: c6 07 00 movb $0x0,(%rdi) 1a: f7 c6 00 02 00 00 test $0x200,%esi 20: 74 01 je 0x23 22: fb sti 23: 65 ff 0d ec e5 6a 45 decl %gs:0x456ae5ec(%rip) # 0x456ae616 2a:* 74 05 je 0x31 <-- trapping instruction 2c: c3 ret 2d: cc int3 2e: cc int3 2f: cc int3 30: cc int3 31: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: 0f 1f 00 nopl (%rax) 3e: 90 nop 3f: 90 nop Code starting with the faulting instruction =========================================== 0: 74 05 je 0x7 2: c3 ret 3: cc int3 4: cc int3 5: cc int3 6: cc int3 7: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: 0f 1f 00 nopl (%rax) 14: 90 nop 15: 90 nop [ 339.247963] RSP: 0018:ffffa57808e63d60 EFLAGS: 00000286 [ 339.248009] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000017 [ 339.248075] RDX: ffffffffba57202d RSI: 0000000000000286 RDI: ffffffffbbee9300 [ 339.248134] RBP: ffff8a9881f1c000 R08: 0000004f0d2e56ac R09: 0000000000000001 [ 339.248193] R10: ffff8a98824a9df8 R11: 0000000000000000 R12: ffffffffbbee9300 [ 339.248250] R13: 0000000000000286 R14: ffff8a98824aa000 R15: ffff8a98824a9c00 [ 339.248309] ? rpm_suspend (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/rpm.h:84 drivers/base/power/runtime.c:718) [ 339.248349] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:634) [ 339.248392] n_tty_write (drivers/tty/n_tty.c:574 drivers/tty/n_tty.c:2389) [ 339.248428] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) [ 339.248474] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1021 drivers/tty/tty_io.c:1096) [ 339.248521] vfs_write (fs/read_write.c:497 fs/read_write.c:590) [ 339.248559] ksys_write (fs/read_write.c:643) [ 339.248595] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 339.248625] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 339.248673] RIP: 0033:0x7fe6fda8d957 [ 339.248709] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24 All code ======== 0: 0b 00 or (%rax),%eax 2: f7 d8 neg %eax 4: 64 89 02 mov %eax,%fs:(%rdx) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b7 jmp 0xffffffffffffffc7 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 01 00 00 00 mov $0x1,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 48 89 54 24 18 mov %rdx,0x18(%rsp) 3c: 48 rex.W 3d: 89 .byte 0x89 3e: 74 24 je 0x64 Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 48 89 54 24 18 mov %rdx,0x18(%rsp) 12: 48 rex.W 13: 89 .byte 0x89 14: 74 24 je 0x3a [ 339.248853] RSP: 002b:00007ffdec0b1988 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 339.248920] RAX: ffffffffffffffda RBX: 00005601a2f8b110 RCX: 00007fe6fda8d957 [ 339.248979] RDX: 0000000000000001 RSI: 00005601a2f8b110 RDI: 0000000000000001 [ 339.249039] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 339.249098] R10: 0000000000000001 R11: 0000000000000246 R12: 00005601a2f77560 Finger prints: __report_bad_irq:note_interrupt:handle_irq_event:handle_edge_irq:__common_interrupt