======================================
| # 88.53 [+0.00] [  809.233068] vx1: left promiscuous mode
| # 88.53 [+0.00] [  809.233572] br1: port 1(vx1) entered disabled state
| # 88.53 [+0.00] [ 1021.236507] Mirror/redirect action on
| # 88.54 [+0.01] [ 1076.863000] irq 51: nobody cared (try booting with the "irqpoll" option)
# 88.55 [+0.00] [ 1076.863602] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# 88.55 [+0.00] [ 1076.863609] Call Trace:
# 88.55 [+0.00] [ 1076.863613]  <IRQ>
# 88.55 [+0.00] [ 1076.863616] dump_stack_lvl (lib/dump_stack.c:123) 
# 88.55 [+0.00] [ 1076.863652] __report_bad_irq (kernel/irq/spurious.c:170) 
# 88.55 [+0.00] [ 1076.863672] note_interrupt (kernel/irq/spurious.c:372) 
# 88.55 [+0.00] [ 1076.863680] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
# 88.55 [+0.00] [ 1076.863686] handle_edge_irq (kernel/irq/chip.c:857) 
# 88.56 [+0.00] [ 1076.863695] __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328) 
# 88.56 [+0.00] [ 1076.863711] common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 14)) 
# 88.56 [+0.00] [ 1076.863721]  </IRQ>
# 88.56 [+0.00] [ 1076.863722]  <TASK>
# 88.56 [+0.00] [ 1076.863726] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
# 88.56 [+0.00] [ 1076.863737] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
# 88.56 [+0.00] [ 1076.863756] Code: 74 24 10 e8 11 af 02 fe 48 89 ef e8 39 fe 02 fe 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> 9a 31 f7 fd 65 8b 05 e3 9f 0a 02 85 c0 74 0a 5b 5d c3 e8 97 b2
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	11 af 02 fe 48 89    	adc    %ebp,-0x76b701fe(%rdi)
   a:	ef                   	out    %eax,(%dx)
   b:	e8 39 fe 02 fe       	call   0xfffffffffe02fe49
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 25                	jne    0x3d
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 2d                	jne    0x4c
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 9a 31 f7 fd       	call   0xfffffffffdf731c9		<-- trapping instruction
  2f:	65 8b 05 e3 9f 0a 02 	mov    %gs:0x20a9fe3(%rip),%eax        # 0x20aa019
  36:	85 c0                	test   %eax,%eax
  38:	74 0a                	je     0x44
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	c3                   	ret
  3d:	e8                   	.byte 0xe8
  3e:	97                   	xchg   %eax,%edi
  3f:	b2                   	.byte 0xb2

Code starting with the faulting instruction
===========================================
   0:	e8 9a 31 f7 fd       	call   0xfffffffffdf7319f
   5:	65 8b 05 e3 9f 0a 02 	mov    %gs:0x20a9fe3(%rip),%eax        # 0x20a9fef
   c:	85 c0                	test   %eax,%eax
   e:	74 0a                	je     0x1a
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	c3                   	ret
  13:	e8                   	.byte 0xe8
  14:	97                   	xchg   %eax,%edi
  15:	b2                   	.byte 0xb2
# 88.57 [+0.00] [ 1076.863759] RSP: 0018:ffffc90003fdfa98 EFLAGS: 00000206
# 88.57 [+0.00] [ 1076.863767] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 0000000000000040
# 88.57 [+0.00] [ 1076.863769] RDX: 0000000000000000 RSI: ffffffff9cbc693a RDI: 0000000000000001
# 88.57 [+0.00] [ 1076.863771] RBP: ffffffff9f44c380 R08: 0000000000000001 R09: 0000000000000001
# 88.57 [+0.00] [ 1076.863773] R10: ffffffff9da14017 R11: ffff888005ef8970 R12: 00000000ffffffff
# 88.57 [+0.00] [ 1076.863775] R13: 0000000000000001 R14: ffffffff9f44c488 R15: 00000000ffffffff
# 88.58 [+0.00] [ 1076.863791] 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) 
# 88.58 [+0.00] [ 1076.863809] process_output_block (drivers/tty/n_tty.c:561) 
# 88.58 [+0.00] [ 1076.863820] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
# 88.58 [+0.00] [ 1076.863827] n_tty_write (drivers/tty/n_tty.c:2378) 
# 88.58 [+0.00] [ 1076.863830] ? _copy_from_iter (./arch/x86/include/asm/uaccess_64.h:126 ./arch/x86/include/asm/uaccess_64.h:141 lib/iov_iter.c:55 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:249 lib/iov_iter.c:260) 
# 88.58 [+0.00] [ 1076.863847] ? n_tty_receive_signal_char (drivers/tty/n_tty.c:2348) 
# 88.58 [+0.00] [ 1076.863853] ? __init_waitqueue_head (kernel/sched/wait.c:458) 
# 88.58 [+0.00] [ 1076.863864] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831) 
# 88.58 [+0.00] [ 1076.863870] ? iterate_tty_write (drivers/tty/tty_io.c:939 drivers/tty/tty_io.c:958) 
# 88.59 [+0.00] [ 1076.863884] iterate_tty_write (drivers/tty/tty_io.c:1007) 
# 88.59 [+0.00] [ 1076.863891] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
# 88.59 [+0.00] [ 1076.863899] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1081) 
# 88.59 [+0.00] [ 1076.863907] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
# 88.59 [+0.00] [ 1076.863920] ? find_held_lock (kernel/locking/lockdep.c:5350) 
# 88.59 [+0.00] [ 1076.863925] ? kernel_write (fs/read_write.c:667) 
# 88.59 [+0.00] [ 1076.863933] ? clockevents_program_event (kernel/time/clockevents.c:326) 
# 88.59 [+0.00] [ 1076.863948] ? clockevents_program_event (kernel/time/clockevents.c:336 (discriminator 3)) 
# 88.59 [+0.00] [ 1076.863955] ksys_write (fs/read_write.c:738) 
# 88.59 [+0.00] [ 1076.863959] ? __ia32_sys_read (fs/read_write.c:728) 
# 88.60 [+0.00] [ 1076.863970] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
# 88.60 [+0.00] [ 1076.863976] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
# 88.60 [+0.00] [ 1076.863979] RIP: 0033:0x7f130daf0337
# 88.60 [+0.00] [ 1076.863984] 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
# 88.60 [+0.00] [ 1076.863987] RSP: 002b:00007ffd5d4c8b58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
# 88.60 [+0.00] [ 1076.863990] RAX: ffffffffffffffda RBX: 000055a9ebcb82e0 RCX: 00007f130daf0337
# 88.61 [+0.00] [ 1076.863992] RDX: 0000000000000001 RSI: 000055a9ebcb82e0 RDI: 0000000000000001
# 88.61 [+0.00] [ 1076.863994] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
# 88.61 [+0.00] [ 1076.863995] R10: 0000000000000001 R11: 0000000000000246 R12: 000055a9ebca3600
# 88.61 [+0.00] [ 1076.863997] R13: 000055a9ebc842a0 R14: 0000000000000001 R15: 000055a9ebca3600
| xx__-> echo $?
| 0
| xx__-> [ 1021.236507][ T9416] Mirror/redirect action on
| [ 1076.863000][    C0] irq 51: nobody cared (try booting with the "irqpoll" option)
[ 1076.863602][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1076.863609][    C0] Call Trace:
[ 1076.863613][    C0]  <IRQ>
[ 1076.863616][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1076.863652][ C0] __report_bad_irq (kernel/irq/spurious.c:170) 
[ 1076.863672][ C0] note_interrupt (kernel/irq/spurious.c:372) 
[ 1076.863680][ C0] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
[ 1076.863686][ C0] handle_edge_irq (kernel/irq/chip.c:857) 
[ 1076.863695][ C0] __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328) 
[ 1076.863711][ C0] common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 14)) 
[ 1076.863721][    C0]  </IRQ>
[ 1076.863722][    C0]  <TASK>
[ 1076.863726][ C0] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 1076.863737][ C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1076.863756][ C0] Code: 74 24 10 e8 11 af 02 fe 48 89 ef e8 39 fe 02 fe 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> 9a 31 f7 fd 65 8b 05 e3 9f 0a 02 85 c0 74 0a 5b 5d c3 e8 97 b2
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	11 af 02 fe 48 89    	adc    %ebp,-0x76b701fe(%rdi)
   a:	ef                   	out    %eax,(%dx)
   b:	e8 39 fe 02 fe       	call   0xfffffffffe02fe49
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 25                	jne    0x3d
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 2d                	jne    0x4c
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 9a 31 f7 fd       	call   0xfffffffffdf731c9		<-- trapping instruction
  2f:	65 8b 05 e3 9f 0a 02 	mov    %gs:0x20a9fe3(%rip),%eax        # 0x20aa019
  36:	85 c0                	test   %eax,%eax
  38:	74 0a                	je     0x44
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	c3                   	ret
  3d:	e8                   	.byte 0xe8
  3e:	97                   	xchg   %eax,%edi
  3f:	b2                   	.byte 0xb2

Code starting with the faulting instruction
===========================================
   0:	e8 9a 31 f7 fd       	call   0xfffffffffdf7319f
   5:	65 8b 05 e3 9f 0a 02 	mov    %gs:0x20a9fe3(%rip),%eax        # 0x20a9fef
   c:	85 c0                	test   %eax,%eax
   e:	74 0a                	je     0x1a
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	c3                   	ret
  13:	e8                   	.byte 0xe8
  14:	97                   	xchg   %eax,%edi
  15:	b2                   	.byte 0xb2
[ 1076.863759][    C0] RSP: 0018:ffffc90003fdfa98 EFLAGS: 00000206
[ 1076.863767][    C0] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 0000000000000040
[ 1076.863769][    C0] RDX: 0000000000000000 RSI: ffffffff9cbc693a RDI: 0000000000000001
[ 1076.863771][    C0] RBP: ffffffff9f44c380 R08: 0000000000000001 R09: 0000000000000001
[ 1076.863773][    C0] R10: ffffffff9da14017 R11: ffff888005ef8970 R12: 00000000ffffffff
[ 1076.863775][    C0] R13: 0000000000000001 R14: ffffffff9f44c488 R15: 00000000ffffffff
[ 1076.863791][ C0] 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) 
[ 1076.863809][ C0] process_output_block (drivers/tty/n_tty.c:561) 
[ 1076.863820][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 1076.863827][ C0] n_tty_write (drivers/tty/n_tty.c:2378) 
[ 1076.863830][ C0] ? _copy_from_iter (./arch/x86/include/asm/uaccess_64.h:126 ./arch/x86/include/asm/uaccess_64.h:141 lib/iov_iter.c:55 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:249 lib/iov_iter.c:260) 
[ 1076.863847][ C0] ? n_tty_receive_signal_char (drivers/tty/n_tty.c:2348) 
[ 1076.863853][ C0] ? __init_waitqueue_head (kernel/sched/wait.c:458) 
[ 1076.863864][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831) 
[ 1076.863870][ C0] ? iterate_tty_write (drivers/tty/tty_io.c:939 drivers/tty/tty_io.c:958) 
[ 1076.863884][ C0] iterate_tty_write (drivers/tty/tty_io.c:1007) 
[ 1076.863891][ C0] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
[ 1076.863899][ C0] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1081) 
[ 1076.863907][ C0] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 1076.863920][ C0] ? find_held_lock (kernel/locking/lockdep.c:5350) 
[ 1076.863925][ C0] ? kernel_write (fs/read_write.c:667) 
[ 1076.863933][ C0] ? clockevents_program_event (kernel/time/clockevents.c:326) 
[ 1076.863948][ C0] ? clockevents_program_event (kernel/time/clockevents.c:336 (discriminator 3)) 
[ 1076.863955][ C0] ksys_write (fs/read_write.c:738) 
[ 1076.863959][ C0] ? __ia32_sys_read (fs/read_write.c:728) 
[ 1076.863970][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1076.863976][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1076.863979][    C0] RIP: 0033:0x7f130daf0337
[ 1076.863984][ C0] 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
[ 1076.863987][    C0] RSP: 002b:00007ffd5d4c8b58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1076.863990][    C0] RAX: ffffffffffffffda RBX: 000055a9ebcb82e0 RCX: 00007f130daf0337
[ 1076.863992][    C0] RDX: 0000000000000001 RSI: 000055a9ebcb82e0 RDI: 0000000000000001
[ 1076.863994][    C0] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 1076.863995][    C0] R10: 0000000000000001 R11: 0000000000000246 R12: 000055a9ebca3600


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