======================================
| # 75.66 [+0.00] [  898.884448] vx10: left promiscuous mode
| # 75.66 [+0.00] [  898.884847] br1: port 1(vx10) entered disabled state
| # 75.66 [+0.00] [  919.145139] Mirror/redirect action on
| # 75.67 [+0.00] [  936.703910] irq 51: nobody cared (try booting with the "irqpoll" option)
# 75.67 [+0.00] [  936.704395] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# 75.67 [+0.00] [  936.704398] Call Trace:
# 75.67 [+0.00] [  936.704400]  <IRQ>
# 75.67 [+0.00] [  936.704403] dump_stack_lvl (lib/dump_stack.c:123) 
# 75.67 [+0.00] [  936.704416] __report_bad_irq (kernel/irq/spurious.c:214) 
# 75.67 [+0.00] [  936.704426] note_interrupt (kernel/irq/spurious.c:423) 
# 75.68 [+0.00] [  936.704434] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
# 75.68 [+0.00] [  936.704442] handle_edge_irq (kernel/irq/chip.c:833) 
# 75.68 [+0.00] [  936.704453] __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) 
# 75.68 [+0.00] [  936.704463] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14)) 
# 75.68 [+0.00] [  936.704468]  </IRQ>
# 75.68 [+0.00] [  936.704470]  <TASK>
# 75.68 [+0.00] [  936.704473] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
# 75.68 [+0.00] [  936.704480] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
# 75.68 [+0.00] [ 936.704487] Code: 10 e8 21 d0 89 fd 48 89 ef e8 69 40 8a 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 d5 e8 d1 78 <74> 0e 5b 5d c3 cc cc cc cc e8 7f 4b af fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	21 d0                	and    %edx,%eax
   4:	89 fd                	mov    %edi,%ebp
   6:	48 89 ef             	mov    %rbp,%rdi
   9:	e8 69 40 8a fd       	call   0xfffffffffd8a4077
   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 d5 e8 d1 78 	decl   %gs:0x78d1e8d5(%rip)        # 0x78d1e8ff
  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 7f 4b af fd       	call   0xfffffffffdaf4bb7
  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 7f 4b af fd       	call   0xfffffffffdaf4b8d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
# 75.69 [+0.00] [  936.704490] RSP: 0018:ffffc9000b557aa0 EFLAGS: 00000286
# 75.69 [+0.00] [  936.704494] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff14c8448
# 75.69 [+0.00] [  936.704496] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8731dc41
# 75.69 [+0.00] [  936.704498] RBP: ffffffff8af08960 R08: 0000000000000001 R09: fffffbfff14c39ef
# 75.70 [+0.00] [  936.704499] R10: ffffffff8a61cf7f R11: ffff88800960c5c0 R12: 00000000ffffffff
# 75.70 [+0.00] [  936.704501] R13: 0000000000000001 R14: ffffffff8af08a68 R15: 00000000ffffffff
# 75.70 [+0.00] [  936.704513] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
# 75.70 [+0.00] [  936.704522] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:636) 
# 75.70 [+0.00] [  936.704535] process_output_block (drivers/tty/n_tty.c:574) 
# 75.70 [+0.00] [  936.704544] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
# 75.70 [+0.00] [  936.704553] n_tty_write (drivers/tty/n_tty.c:2390) 
# 75.71 [+0.00] [  936.704565] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360) 
# 75.72 [+0.02] [  936.704569] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37)) 
# 75.72 [+0.00] [  936.704573] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) 
# 75.72 [+0.00] [  936.704581] ? lock_acquire (kernel/locking/lockdep.c:5824) 
# 75.73 [+0.00] [  936.704584] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967) 
# 75.73 [+0.00] [  936.704595] iterate_tty_write (drivers/tty/tty_io.c:1015) 
# 75.73 [+0.00] [  936.704602] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
# 75.73 [+0.00] [  936.704611] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1090) 
# 75.73 [+0.00] [  936.704619] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
# 75.73 [+0.00] [  936.704625] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
# 75.73 [+0.00] [  936.704632] ? __pfx_vfs_write (fs/read_write.c:660) 
# 75.73 [+0.00] [  936.704638] ? clockevents_program_event (kernel/time/clockevents.c:326) 
# 75.74 [+0.00] [  936.704662] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3)) 
# 75.74 [+0.00] [  936.704676] ksys_write (fs/read_write.c:731) 
# 75.74 [+0.00] [  936.704681] ? __pfx_ksys_write (fs/read_write.c:721) 
# 75.74 [+0.00] [  936.704694] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
# 75.74 [+0.00] [  936.704701] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
# 75.74 [+0.00] [  936.704704] RIP: 0033:0x7fbe7c5bcb77
# 75.74 [+0.00] [ 936.704710] 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
# 75.75 [+0.00] [  936.704713] RSP: 002b:00007ffe9bf199b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
# 75.75 [+0.00] [  936.704716] RAX: ffffffffffffffda RBX: 00005606df9a63f0 RCX: 00007fbe7c5bcb77
# 75.75 [+0.00] [  936.704718] RDX: 0000000000000001 RSI: 00005606df9a63f0 RDI: 0000000000000001
# 75.75 [+0.00] [  936.704719] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
# 75.75 [+0.00] [  936.704721] R10: 0000000000000001 R11: 0000000000000246 R12: 00005606df9915e0
# 75.76 [+0.00] [  936.704723] R13: 00005606df9722a0 R14: 0000000000000001 R15: 00005606df9915e0
| xx__-> echo $?
| 0
| xx__-> [  919.145139][T10785] Mirror/redirect action on
| [  936.703910][    C0] irq 51: nobody cared (try booting with the "irqpoll" option)
[  936.704395][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  936.704398][    C0] Call Trace:
[  936.704400][    C0]  <IRQ>
[ 936.704403][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 936.704416][ C0] __report_bad_irq (kernel/irq/spurious.c:214) 
[ 936.704426][ C0] note_interrupt (kernel/irq/spurious.c:423) 
[ 936.704434][ C0] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
[ 936.704442][ C0] handle_edge_irq (kernel/irq/chip.c:833) 
[ 936.704453][ 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) 
[ 936.704463][ C0] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14)) 
[  936.704468][    C0]  </IRQ>
[  936.704470][    C0]  <TASK>
[ 936.704473][ C0] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 936.704480][ C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 936.704487][ C0] Code: 10 e8 21 d0 89 fd 48 89 ef e8 69 40 8a 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 d5 e8 d1 78 <74> 0e 5b 5d c3 cc cc cc cc e8 7f 4b af fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	21 d0                	and    %edx,%eax
   4:	89 fd                	mov    %edi,%ebp
   6:	48 89 ef             	mov    %rbp,%rdi
   9:	e8 69 40 8a fd       	call   0xfffffffffd8a4077
   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 d5 e8 d1 78 	decl   %gs:0x78d1e8d5(%rip)        # 0x78d1e8ff
  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 7f 4b af fd       	call   0xfffffffffdaf4bb7
  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 7f 4b af fd       	call   0xfffffffffdaf4b8d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[  936.704490][    C0] RSP: 0018:ffffc9000b557aa0 EFLAGS: 00000286
[  936.704494][    C0] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff14c8448
[  936.704496][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8731dc41
[  936.704498][    C0] RBP: ffffffff8af08960 R08: 0000000000000001 R09: fffffbfff14c39ef
[  936.704499][    C0] R10: ffffffff8a61cf7f R11: ffff88800960c5c0 R12: 00000000ffffffff
[  936.704501][    C0] R13: 0000000000000001 R14: ffffffff8af08a68 R15: 00000000ffffffff
[ 936.704513][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 936.704522][ C0] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:636) 
[ 936.704535][ C0] process_output_block (drivers/tty/n_tty.c:574) 
[ 936.704544][ C0] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 936.704553][ C0] n_tty_write (drivers/tty/n_tty.c:2390) 
[ 936.704565][ C0] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360) 
[ 936.704569][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37)) 
[ 936.704573][ C0] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) 
[ 936.704581][ C0] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 936.704584][ C0] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967) 
[ 936.704595][ C0] iterate_tty_write (drivers/tty/tty_io.c:1015) 
[ 936.704602][ C0] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
[ 936.704611][ C0] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1090) 
[ 936.704619][ C0] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 936.704625][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 936.704632][ C0] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 936.704638][ C0] ? clockevents_program_event (kernel/time/clockevents.c:326) 
[ 936.704662][ C0] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3)) 
[ 936.704676][ C0] ksys_write (fs/read_write.c:731) 
[ 936.704681][ C0] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 936.704694][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 936.704701][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  936.704704][    C0] RIP: 0033:0x7fbe7c5bcb77
[ 936.704710][ 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
[  936.704713][    C0] RSP: 002b:00007ffe9bf199b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  936.704716][    C0] RAX: ffffffffffffffda RBX: 00005606df9a63f0 RCX: 00007fbe7c5bcb77
[  936.704718][    C0] RDX: 0000000000000001 RSI: 00005606df9a63f0 RDI: 0000000000000001
[  936.704719][    C0] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[  936.704721][    C0] R10: 0000000000000001 R11: 0000000000000246 R12: 00005606df9915e0


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