======================================
| xx__-> echo $?
| 0
| xx__-> [  676.994317] Mirror/redirect action on
| [  691.061276] irq 51: nobody cared (try booting with the "irqpoll" option)
[  691.061426] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  691.061427] Call Trace:
[  691.061430]  <IRQ>
[  691.061433] dump_stack_lvl (lib/dump_stack.c:123) 
[  691.061439] __report_bad_irq (kernel/irq/spurious.c:170) 
[  691.061445] note_interrupt (kernel/irq/spurious.c:372) 
[  691.061447] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
[  691.061449] handle_edge_irq (kernel/irq/chip.c:857) 
[  691.061451] __common_interrupt (./include/asm-generic/irq_regs.h:29 arch/x86/kernel/irq.c:328) 
[  691.061456] common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 14)) 
[  691.061459]  </IRQ>
[  691.061459]  <TASK>
[  691.061460] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[  691.061463] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 691.061467] Code: f4 00 74 01 c3 0f 1f 44 00 00 c3 0f 1f 00 f3 0f 1e fa 0f 1f 44 00 00 c6 07 00 f7 c6 00 02 00 00 74 01 fb 65 ff 0d 84 fe f4 00 <74> 01 c3 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f
All code
========
   0:	f4                   	hlt
   1:	00 74 01 c3          	add    %dh,-0x3d(%rcx,%rax,1)
   5:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   a:	c3                   	ret
   b:	0f 1f 00             	nopl   (%rax)
   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 84 fe f4 00 	decl   %gs:0xf4fe84(%rip)        # 0xf4feae
  2a:*	74 01                	je     0x2d		<-- trapping instruction
  2c:	c3                   	ret
  2d:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  32:	c3                   	ret
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	f3                   	repz
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	74 01                	je     0x3
   2:	c3                   	ret
   3:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   8:	c3                   	ret
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	f3                   	repz
  15:	0f                   	.byte 0xf
[  691.061469] RSP: 0018:ffffa7ca80d33d50 EFLAGS: 00000286
[  691.061471] RAX: 00000000ffffffff RBX: 0000000000000001 RCX: 0000000000000017
[  691.061472] RDX: ffffffffb8950538 RSI: 0000000000000286 RDI: ffffffffb9ce6300
[  691.061473] RBP: ffff94b1c1ff4000 R08: 000000a0f9d2ceeb R09: 0000000000000001
[  691.061473] R10: ffff94b1c3665df8 R11: 0000000000000000 R12: 0000000000000001
[  691.061474] R13: ffffffffb9ce6300 R14: 0000000000000286 R15: ffffa7ca804dd000
[  691.061475] ? rpm_suspend (./arch/x86/include/asm/jump_label.h:36 ./include/trace/events/rpm.h:84 drivers/base/power/runtime.c:741) 
[  691.061481] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:92 drivers/tty/serial/serial_core.c:88 drivers/tty/serial/serial_core.c:637) 
[  691.061486] n_tty_write (drivers/tty/n_tty.c:561 drivers/tty/n_tty.c:2377) 
[  691.061489] ? swake_up_all (kernel/sched/wait.c:458) 
[  691.061491] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1006 drivers/tty/tty_io.c:1081) 
[  691.061494] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[  691.061499] ksys_write (fs/read_write.c:738) 
[  691.061501] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[  691.061503] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  691.061505] RIP: 0033:0x7f480789b337
[ 691.061506] Code: 0f 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:	0f 00                	(bad)
   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
[  691.061507] RSP: 002b:00007fff3aeb2de8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  691.061509] RAX: ffffffffffffffda RBX: 000055e393d170e0 RCX: 00007f480789b337
[  691.061510] RDX: 0000000000000001 RSI: 000055e393d170e0 RDI: 0000000000000001
[  691.061510] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[  691.061511] R10: 0000000000000001 R11: 0000000000000246 R12: 000055e393d035a0


Finger prints:
__report_bad_irq:note_interrupt:handle_irq_event:handle_edge_irq:__common_interrupt