======================================
| # 76.89 [+0.00] [  897.816856] vx10: left promiscuous mode
| # 76.89 [+0.00] [  897.817720] br1: port 1(vx10) entered disabled state
| # 76.89 [+0.00] [  919.271231] Mirror/redirect action on
| # 76.89 [+0.00] [  938.157130] irq 51: nobody cared (try booting with the "irqpoll" option)
# 76.90 [+0.00] [  938.157643] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# 76.90 [+0.00] [  938.157646] Call Trace:
# 76.90 [+0.00] [  938.157648]  <IRQ>
# 76.90 [+0.00] [  938.157651] dump_stack_lvl (lib/dump_stack.c:123) 
# 76.90 [+0.00] [  938.157664] __report_bad_irq (kernel/irq/spurious.c:214) 
# 76.90 [+0.00] [  938.157675] note_interrupt (kernel/irq/spurious.c:423) 
# 76.90 [+0.00] [  938.157684] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
# 76.90 [+0.00] [  938.157690] handle_edge_irq (kernel/irq/chip.c:833) 
# 76.90 [+0.00] [  938.157700] __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) 
# 76.90 [+0.00] [  938.157710] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14)) 
# 76.91 [+0.00] [  938.157716]  </IRQ>
# 76.91 [+0.00] [  938.157717]  <TASK>
# 76.91 [+0.00] [  938.157721] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
# 76.91 [+0.00] [  938.157726] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
# 76.91 [+0.00] [ 938.157734] Code: 10 e8 91 8a 87 fd 48 89 ef e8 d9 fa 87 fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d b5 8d 2f 4f <74> 0e 5b 5d c3 cc cc cc cc e8 5f 2a ad fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	91                   	xchg   %eax,%ecx
   3:	8a 87 fd 48 89 ef    	mov    -0x1076b703(%rdi),%al
   9:	e8 d9 fa 87 fd       	call   0xfffffffffd87fae7
   e:	81 e3 00 02 00 00    	and    $0x200,%ebx
  14:	75 1d                	jne    0x33
  16:	9c                   	pushf
  17:	58                   	pop    %rax
  18:	f6 c4 02             	test   $0x2,%ah
  1b:	75 29                	jne    0x46
  1d:	48 85 db             	test   %rbx,%rbx
  20:	74 01                	je     0x23
  22:	fb                   	sti
  23:	65 ff 0d b5 8d 2f 4f 	decl   %gs:0x4f2f8db5(%rip)        # 0x4f2f8ddf
  2a:*	74 0e                	je     0x3a		<-- trapping instruction
  2c:	5b                   	pop    %rbx
  2d:	5d                   	pop    %rbp
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	e8 5f 2a ad fd       	call   0xfffffffffdad2a97
  38:	eb dc                	jmp    0x16
  3a:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	74 0e                	je     0x10
   2:	5b                   	pop    %rbx
   3:	5d                   	pop    %rbp
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	e8 5f 2a ad fd       	call   0xfffffffffdad2a6d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
# 76.91 [+0.00] [  938.157737] RSP: 0018:ffffc9000b497aa0 EFLAGS: 00000286
# 76.92 [+0.00] [  938.157741] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff67c9c5d
# 76.92 [+0.00] [  938.157744] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb0d43761
# 76.92 [+0.00] [  938.157745] RBP: ffffffffb4714ae0 R08: 0000000000000001 R09: fffffbfff67c51eb
# 76.92 [+0.00] [  938.157747] R10: ffffffffb3e28f5f R11: ffff88800beca300 R12: 00000000ffffffff
# 76.92 [+0.00] [  938.157750] R13: 0000000000000001 R14: ffffffffb4714be8 R15: 00000000ffffffff
# 76.93 [+0.00] [  938.157761] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
# 76.93 [+0.00] [  938.157770] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:636) 
# 76.93 [+0.00] [  938.157783] process_output_block (drivers/tty/n_tty.c:574) 
# 76.93 [+0.00] [  938.157792] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
# 76.93 [+0.00] [  938.157802] n_tty_write (drivers/tty/n_tty.c:2390) 
# 76.93 [+0.00] [  938.157814] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360) 
# 76.93 [+0.00] [  938.157817] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
# 76.93 [+0.00] [  938.157821] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) 
# 76.93 [+0.00] [  938.157829] ? lock_acquire (kernel/locking/lockdep.c:5824) 
# 76.94 [+0.00] [  938.157831] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967) 
# 76.94 [+0.00] [  938.157843] iterate_tty_write (drivers/tty/tty_io.c:1015) 
# 76.94 [+0.00] [  938.157850] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
# 76.94 [+0.00] [  938.157858] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1090) 
# 76.94 [+0.00] [  938.157866] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
# 76.94 [+0.00] [  938.157871] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
# 76.94 [+0.00] [  938.157878] ? __pfx_vfs_write (fs/read_write.c:660) 
# 76.94 [+0.00] [  938.157884] ? clockevents_program_event (kernel/time/clockevents.c:326) 
# 76.95 [+0.00] [  938.157902] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3)) 
# 76.95 [+0.00] [  938.157910] ksys_write (fs/read_write.c:731) 
# 76.95 [+0.00] [  938.157915] ? __pfx_ksys_write (fs/read_write.c:721) 
# 76.95 [+0.00] [  938.157928] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
# 76.95 [+0.00] [  938.157933] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
# 76.95 [+0.00] [  938.157937] RIP: 0033:0x7f4e1f26eb77
# 76.95 [+0.00] [ 938.157942] 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
# 76.96 [+0.00] [  938.157945] RSP: 002b:00007fff60abfa88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
# 76.96 [+0.00] [  938.157947] RAX: ffffffffffffffda RBX: 000056422e8e62b0 RCX: 00007f4e1f26eb77
# 76.96 [+0.00] [  938.157949] RDX: 0000000000000001 RSI: 000056422e8e62b0 RDI: 0000000000000001
# 76.97 [+0.00] [  938.157951] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
# 76.97 [+0.01] [  938.157952] R10: 0000000000000001 R11: 0000000000000246 R12: 000056422e8d15e0
# 76.97 [+0.00] [  938.157953] R13: 000056422e8b22a0 R14: 0000000000000001 R15: 000056422e8d15e0
| xx__-> echo $?
| 0
| xx__-> [  919.271231][T10782] Mirror/redirect action on
| [  938.157130][    C0] irq 51: nobody cared (try booting with the "irqpoll" option)
[  938.157643][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  938.157646][    C0] Call Trace:
[  938.157648][    C0]  <IRQ>
[ 938.157651][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 938.157664][ C0] __report_bad_irq (kernel/irq/spurious.c:214) 
[ 938.157675][ C0] note_interrupt (kernel/irq/spurious.c:423) 
[ 938.157684][ C0] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
[ 938.157690][ C0] handle_edge_irq (kernel/irq/chip.c:833) 
[ 938.157700][ C0] __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) 
[ 938.157710][ C0] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14)) 
[  938.157716][    C0]  </IRQ>
[  938.157717][    C0]  <TASK>
[ 938.157721][ C0] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 938.157726][ C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 938.157734][ C0] Code: 10 e8 91 8a 87 fd 48 89 ef e8 d9 fa 87 fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d b5 8d 2f 4f <74> 0e 5b 5d c3 cc cc cc cc e8 5f 2a ad fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	91                   	xchg   %eax,%ecx
   3:	8a 87 fd 48 89 ef    	mov    -0x1076b703(%rdi),%al
   9:	e8 d9 fa 87 fd       	call   0xfffffffffd87fae7
   e:	81 e3 00 02 00 00    	and    $0x200,%ebx
  14:	75 1d                	jne    0x33
  16:	9c                   	pushf
  17:	58                   	pop    %rax
  18:	f6 c4 02             	test   $0x2,%ah
  1b:	75 29                	jne    0x46
  1d:	48 85 db             	test   %rbx,%rbx
  20:	74 01                	je     0x23
  22:	fb                   	sti
  23:	65 ff 0d b5 8d 2f 4f 	decl   %gs:0x4f2f8db5(%rip)        # 0x4f2f8ddf
  2a:*	74 0e                	je     0x3a		<-- trapping instruction
  2c:	5b                   	pop    %rbx
  2d:	5d                   	pop    %rbp
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	e8 5f 2a ad fd       	call   0xfffffffffdad2a97
  38:	eb dc                	jmp    0x16
  3a:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	74 0e                	je     0x10
   2:	5b                   	pop    %rbx
   3:	5d                   	pop    %rbp
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	e8 5f 2a ad fd       	call   0xfffffffffdad2a6d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[  938.157737][    C0] RSP: 0018:ffffc9000b497aa0 EFLAGS: 00000286
[  938.157741][    C0] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff67c9c5d
[  938.157744][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb0d43761
[  938.157745][    C0] RBP: ffffffffb4714ae0 R08: 0000000000000001 R09: fffffbfff67c51eb
[  938.157747][    C0] R10: ffffffffb3e28f5f R11: ffff88800beca300 R12: 00000000ffffffff
[  938.157750][    C0] R13: 0000000000000001 R14: ffffffffb4714be8 R15: 00000000ffffffff
[ 938.157761][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 938.157770][ C0] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:636) 
[ 938.157783][ C0] process_output_block (drivers/tty/n_tty.c:574) 
[ 938.157792][ C0] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 938.157802][ C0] n_tty_write (drivers/tty/n_tty.c:2390) 
[ 938.157814][ C0] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360) 
[ 938.157817][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 938.157821][ C0] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) 
[ 938.157829][ C0] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 938.157831][ C0] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967) 
[ 938.157843][ C0] iterate_tty_write (drivers/tty/tty_io.c:1015) 
[ 938.157850][ C0] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
[ 938.157858][ C0] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1090) 
[ 938.157866][ C0] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 938.157871][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 938.157878][ C0] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 938.157884][ C0] ? clockevents_program_event (kernel/time/clockevents.c:326) 
[ 938.157902][ C0] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3)) 
[ 938.157910][ C0] ksys_write (fs/read_write.c:731) 
[ 938.157915][ C0] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 938.157928][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 938.157933][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  938.157937][    C0] RIP: 0033:0x7f4e1f26eb77
[ 938.157942][ C0] 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
[  938.157945][    C0] RSP: 002b:00007fff60abfa88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  938.157947][    C0] RAX: ffffffffffffffda RBX: 000056422e8e62b0 RCX: 00007f4e1f26eb77
[  938.157949][    C0] RDX: 0000000000000001 RSI: 000056422e8e62b0 RDI: 0000000000000001
[  938.157951][    C0] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[  938.157952][    C0] R10: 0000000000000001 R11: 0000000000000246 R12: 000056422e8d15e0


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