======================================
| 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]  <IRQ>
[  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]  </IRQ>
[  339.247719]  <TASK>
[  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