======================================
| # 77.09 [+0.00] [  918.705671] vx10: left promiscuous mode
| # 77.09 [+0.00] [  918.706006] br1: port 1(vx10) entered disabled state
| # 77.09 [+0.00] [  940.585759] Mirror/redirect action on
| # 77.10 [+0.00] [  958.606365] irq 51: nobody cared (try booting with the "irqpoll" option)
# 77.10 [+0.00] [  958.606793] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# 77.10 [+0.00] [  958.606795] Call Trace:
# 77.10 [+0.00] [  958.606797]  <IRQ>
# 77.10 [+0.00] [  958.606799] dump_stack_lvl (lib/dump_stack.c:123) 
# 77.10 [+0.00] [  958.606809] __report_bad_irq (kernel/irq/spurious.c:214) 
# 77.10 [+0.00] [  958.606817] note_interrupt (kernel/irq/spurious.c:423) 
# 77.11 [+0.00] [  958.606825] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
# 77.11 [+0.00] [  958.606831] handle_edge_irq (kernel/irq/chip.c:833) 
# 77.11 [+0.00] [  958.606842] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:249 arch/x86/kernel/irq.c:261 arch/x86/kernel/irq.c:287) 
# 77.11 [+0.00] [  958.606849] common_interrupt (arch/x86/kernel/irq.c:280 (discriminator 14)) 
# 77.11 [+0.00] [  958.606855]  </IRQ>
# 77.11 [+0.00] [  958.606856]  <TASK>
# 77.11 [+0.00] [  958.606860] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
# 77.11 [+0.00] [  958.606865] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
# 77.11 [+0.00] [ 958.606870] Code: 10 e8 a1 5c 87 fd 48 89 ef e8 e9 cc 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 3d 0f 56 <74> 0e 5b 5d c3 cc cc cc cc e8 1f fe ac fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	a1 5c 87 fd 48 89 ef 	movabs 0xe9e8ef8948fd875c,%eax
   9:	e8 e9 
   b:	cc                   	int3
   c:	87 fd                	xchg   %edi,%ebp
   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 3d 0f 56 	decl   %gs:0x560f3db5(%rip)        # 0x560f3ddf
  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 1f fe ac fd       	call   0xfffffffffdacfe57
  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 1f fe ac fd       	call   0xfffffffffdacfe2d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
# 77.12 [+0.00] [  958.606873] RSP: 0018:ffffc9000b327aa0 EFLAGS: 00000286
# 77.12 [+0.00] [  958.606877] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff5a0a62b
# 77.12 [+0.00] [  958.606879] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa9f48761
# 77.12 [+0.00] [  958.606881] RBP: ffffffffad919b20 R08: 0000000000000001 R09: fffffbfff5a05beb
# 77.13 [+0.00] [  958.606883] R10: ffffffffad02df5f R11: ffff88800d5b0040 R12: 00000000ffffffff
# 77.13 [+0.00] [  958.606885] R13: 0000000000000001 R14: ffffffffad919c28 R15: 00000000ffffffff
# 77.13 [+0.00] [  958.606896] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
# 77.13 [+0.00] [  958.606904] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:636) 
# 77.13 [+0.00] [  958.606917] process_output_block (drivers/tty/n_tty.c:574) 
# 77.13 [+0.00] [  958.606923] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
# 77.13 [+0.00] [  958.606932] n_tty_write (drivers/tty/n_tty.c:2390) 
# 77.14 [+0.00] [  958.606943] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360) 
# 77.14 [+0.00] [  958.606947] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
# 77.14 [+0.00] [  958.606951] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) 
# 77.14 [+0.00] [  958.606959] ? lock_acquire (kernel/locking/lockdep.c:5824) 
# 77.14 [+0.00] [  958.606961] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967) 
# 77.14 [+0.00] [  958.606973] iterate_tty_write (drivers/tty/tty_io.c:1015) 
# 77.14 [+0.00] [  958.606981] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
# 77.14 [+0.00] [  958.606989] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1090) 
# 77.15 [+0.00] [  958.606998] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
# 77.15 [+0.00] [  958.607003] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
# 77.15 [+0.00] [  958.607010] ? __pfx_vfs_write (fs/read_write.c:660) 
# 77.16 [+0.01] [  958.607016] ? clockevents_program_event (kernel/time/clockevents.c:326) 
# 77.16 [+0.00] [  958.607032] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3)) 
# 77.16 [+0.00] [  958.607041] ksys_write (fs/read_write.c:731) 
# 77.16 [+0.00] [  958.607046] ? __pfx_ksys_write (fs/read_write.c:721) 
# 77.16 [+0.00] [  958.607058] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
# 77.16 [+0.00] [  958.607064] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
# 77.16 [+0.00] [  958.607067] RIP: 0033:0x7f0d785b2b77
# 77.16 [+0.00] [ 958.607072] 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
# 77.17 [+0.00] [  958.607074] RSP: 002b:00007ffdab55eae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
# 77.17 [+0.00] [  958.607077] RAX: ffffffffffffffda RBX: 0000562147a0e330 RCX: 00007f0d785b2b77
# 77.17 [+0.00] [  958.607079] RDX: 0000000000000001 RSI: 0000562147a0e330 RDI: 0000000000000001
# 77.18 [+0.00] [  958.607080] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
# 77.18 [+0.00] [  958.607082] R10: 0000000000000001 R11: 0000000000000246 R12: 00005621479f95e0
# 77.18 [+0.00] [  958.607083] R13: 00005621479da2a0 R14: 0000000000000001 R15: 00005621479f95e0
| xx__-> echo $?
| 0
| xx__-> [  940.585759][T10781] Mirror/redirect action on
| [  958.606365][    C0] irq 51: nobody cared (try booting with the "irqpoll" option)
[  958.606793][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  958.606795][    C0] Call Trace:
[  958.606797][    C0]  <IRQ>
[ 958.606799][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 958.606809][ C0] __report_bad_irq (kernel/irq/spurious.c:214) 
[ 958.606817][ C0] note_interrupt (kernel/irq/spurious.c:423) 
[ 958.606825][ C0] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
[ 958.606831][ C0] handle_edge_irq (kernel/irq/chip.c:833) 
[ 958.606842][ C0] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:249 arch/x86/kernel/irq.c:261 arch/x86/kernel/irq.c:287) 
[ 958.606849][ C0] common_interrupt (arch/x86/kernel/irq.c:280 (discriminator 14)) 
[  958.606855][    C0]  </IRQ>
[  958.606856][    C0]  <TASK>
[ 958.606860][ C0] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 958.606865][ C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 958.606870][ C0] Code: 10 e8 a1 5c 87 fd 48 89 ef e8 e9 cc 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 3d 0f 56 <74> 0e 5b 5d c3 cc cc cc cc e8 1f fe ac fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	a1 5c 87 fd 48 89 ef 	movabs 0xe9e8ef8948fd875c,%eax
   9:	e8 e9 
   b:	cc                   	int3
   c:	87 fd                	xchg   %edi,%ebp
   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 3d 0f 56 	decl   %gs:0x560f3db5(%rip)        # 0x560f3ddf
  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 1f fe ac fd       	call   0xfffffffffdacfe57
  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 1f fe ac fd       	call   0xfffffffffdacfe2d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[  958.606873][    C0] RSP: 0018:ffffc9000b327aa0 EFLAGS: 00000286
[  958.606877][    C0] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff5a0a62b
[  958.606879][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa9f48761
[  958.606881][    C0] RBP: ffffffffad919b20 R08: 0000000000000001 R09: fffffbfff5a05beb
[  958.606883][    C0] R10: ffffffffad02df5f R11: ffff88800d5b0040 R12: 00000000ffffffff
[  958.606885][    C0] R13: 0000000000000001 R14: ffffffffad919c28 R15: 00000000ffffffff
[ 958.606896][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 958.606904][ C0] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:636) 
[ 958.606917][ C0] process_output_block (drivers/tty/n_tty.c:574) 
[ 958.606923][ C0] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 958.606932][ C0] n_tty_write (drivers/tty/n_tty.c:2390) 
[ 958.606943][ C0] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360) 
[ 958.606947][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 958.606951][ C0] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) 
[ 958.606959][ C0] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 958.606961][ C0] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967) 
[ 958.606973][ C0] iterate_tty_write (drivers/tty/tty_io.c:1015) 
[ 958.606981][ C0] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
[ 958.606989][ C0] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1090) 
[ 958.606998][ C0] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 958.607003][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 958.607010][ C0] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 958.607016][ C0] ? clockevents_program_event (kernel/time/clockevents.c:326) 
[ 958.607032][ C0] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3)) 
[ 958.607041][ C0] ksys_write (fs/read_write.c:731) 
[ 958.607046][ C0] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 958.607058][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 958.607064][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  958.607067][    C0] RIP: 0033:0x7f0d785b2b77
[ 958.607072][ 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
[  958.607074][    C0] RSP: 002b:00007ffdab55eae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  958.607077][    C0] RAX: ffffffffffffffda RBX: 0000562147a0e330 RCX: 00007f0d785b2b77
[  958.607079][    C0] RDX: 0000000000000001 RSI: 0000562147a0e330 RDI: 0000000000000001
[  958.607080][    C0] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[  958.607082][    C0] R10: 0000000000000001 R11: 0000000000000246 R12: 00005621479f95e0


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