======================================
| # 121.39 [+0.00] [  843.150434] vx1: left promiscuous mode
| # 121.40 [+0.00] [  843.150966] br1: port 1(vx1) entered disabled state
| # 121.40 [+0.00] [ 1060.118601] Mirror/redirect action on
| # 121.40 [+0.00] [ 1140.672861] irq 51: nobody cared (try booting with the "irqpoll" option)
# 121.41 [+0.00] [ 1140.673436] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# 121.43 [+0.02] [ 1140.673438] Call Trace:
# 121.43 [+0.00] [ 1140.673440]  <IRQ>
# 121.43 [+0.00] [ 1140.673443]  dump_stack_lvl (lib/dump_stack.c:123)
# 121.43 [+0.00] [ 1140.673457]  __report_bad_irq (kernel/irq/spurious.c:170)
# 121.43 [+0.00] [ 1140.673466]  note_interrupt (kernel/irq/spurious.c:372)
# 121.44 [+0.00] [ 1140.673473]  handle_irq_event (kernel/irq/handle.c:245 kernel/irq/handle.c:257)
# 121.44 [+0.00] [ 1140.673480]  handle_edge_irq (kernel/irq/chip.c:857)
# 121.44 [+0.00] [ 1140.673491]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
# 121.44 [+0.00] [ 1140.673502]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 14))
# 121.44 [+0.00] [ 1140.673507]  </IRQ>
# 121.44 [+0.00] [ 1140.673508]  <TASK>
# 121.44 [+0.00] [ 1140.673512]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
# 121.45 [+0.00] [ 1140.673516] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
# 121.45 [+0.00] [ 1140.673525] Code: 74 24 10 e8 51 1a ff fd 48 89 ef e8 79 69 ff fd 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> 0a a2 f3 fd 65 8b 05 b3 7b 07 02 85 c0 74 0a 5b 5d c3 e8 87 2e
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	51                   	push   %rcx
   5:	1a ff                	sbb    %bh,%bh
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 79 69 ff fd       	call   0xfffffffffdff6989
  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 0a a2 f3 fd       	call   0xfffffffffdf3a239		<-- trapping instruction
  2f:	65 8b 05 b3 7b 07 02 	mov    %gs:0x2077bb3(%rip),%eax        # 0x2077be9
  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:	87 2e                	xchg   %ebp,(%rsi)

Code starting with the faulting instruction
===========================================
   0:	e8 0a a2 f3 fd       	call   0xfffffffffdf3a20f
   5:	65 8b 05 b3 7b 07 02 	mov    %gs:0x2077bb3(%rip),%eax        # 0x2077bbf
   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:	87 2e                	xchg   %ebp,(%rsi)
# 121.46 [+0.01] [ 1140.673528] RSP: 0018:ffffc90009f47a88 EFLAGS: 00000206
# 121.46 [+0.00] [ 1140.673532] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 0000000000000040
# 121.46 [+0.00] [ 1140.673534] RDX: 0000000000000000 RSI: ffffffffb0d86a21 RDI: 0000000000000001
# 121.46 [+0.00] [ 1140.673535] RBP: ffffffffb366e560 R08: 0000000000000001 R09: 0000000000000001
# 121.47 [+0.00] [ 1140.673537] R10: ffffffffb1c24257 R11: ffff888005ed0970 R12: 00000000ffffffff
# 121.47 [+0.00] [ 1140.673539] R13: 0000000000000001 R14: ffffffffb366e668 R15: 00000000ffffffff
# 121.47 [+0.00] [ 1140.673555]  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:634)
# 121.47 [+0.00] [ 1140.673567]  process_output_block (drivers/tty/n_tty.c:561)
# 121.48 [+0.00] [ 1140.673576]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
# 121.48 [+0.00] [ 1140.673584]  n_tty_write (drivers/tty/n_tty.c:2378)
# 121.48 [+0.00] [ 1140.673587]  ? _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)
# 121.48 [+0.00] [ 1140.673599]  ? n_tty_receive_signal_char (drivers/tty/n_tty.c:2348)
# 121.48 [+0.00] [ 1140.673605]  ? __init_waitqueue_head (kernel/sched/wait.c:458)
# 121.48 [+0.00] [ 1140.673615]  ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831)
# 121.49 [+0.00] [ 1140.673620]  ? iterate_tty_write (drivers/tty/tty_io.c:939 drivers/tty/tty_io.c:958)
# 121.49 [+0.00] [ 1140.673630]  iterate_tty_write (drivers/tty/tty_io.c:1007)
# 121.49 [+0.00] [ 1140.673636]  ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244)
# 121.49 [+0.00] [ 1140.673643]  file_tty_write.constprop.0 (drivers/tty/tty_io.c:1081)
# 121.49 [+0.00] [ 1140.673650]  vfs_write (fs/read_write.c:594 fs/read_write.c:686)
# 121.49 [+0.00] [ 1140.673661]  ? kernel_write (fs/read_write.c:667)
# 121.50 [+0.00] [ 1140.673667]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
# 121.50 [+0.00] [ 1140.673676]  ? trace_rseq_update (./include/trace/events/rseq.h:11 (discriminator 21))
# 121.50 [+0.00] [ 1140.673687]  ? __rseq_handle_notify_resume (kernel/rseq.c:442)
# 121.50 [+0.00] [ 1140.673690]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
# 121.50 [+0.00] [ 1140.673699]  ksys_write (fs/read_write.c:738)
# 121.51 [+0.00] [ 1140.673703]  ? __ia32_sys_read (fs/read_write.c:728)
# 121.51 [+0.00] [ 1140.673708]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
# 121.51 [+0.00] [ 1140.673717]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
# 121.51 [+0.00] [ 1140.673724]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
# 121.51 [+0.00] [ 1140.673726] RIP: 0033:0x7fecccb7e257
# 121.51 [+0.00] [ 1140.673731] 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
# 121.52 [+0.01] [ 1140.673733] RSP: 002b:00007fff7377fab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
# 121.52 [+0.00] [ 1140.673736] RAX: ffffffffffffffda RBX: 00005560f77f12e0 RCX: 00007fecccb7e257
# 121.53 [+0.00] [ 1140.673738] RDX: 0000000000000001 RSI: 00005560f77f12e0 RDI: 0000000000000001
# 121.53 [+0.00] [ 1140.673739] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
# 121.53 [+0.00] [ 1140.673741] R10: 0000000000000001 R11: 0000000000000246 R12: 00005560f77dc600
# 121.54 [+0.00] [ 1140.673743] R13: 00005560f77bd2a0 R14: 0000000000000001 R15: 00005560f77dc600
| xx__-> echo $?
| 0
| xx__-> [ 1060.118601][ T7847] Mirror/redirect action on
| [ 1140.672861][    C0] irq 51: nobody cared (try booting with the "irqpoll" option)
[ 1140.673436][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1140.673438][    C0] Call Trace:
[ 1140.673440][    C0]  <IRQ>
[ 1140.673443][    C0]  dump_stack_lvl (lib/dump_stack.c:123)
[ 1140.673457][    C0]  __report_bad_irq (kernel/irq/spurious.c:170)
[ 1140.673466][    C0]  note_interrupt (kernel/irq/spurious.c:372)
[ 1140.673473][    C0]  handle_irq_event (kernel/irq/handle.c:245 kernel/irq/handle.c:257)
[ 1140.673480][    C0]  handle_edge_irq (kernel/irq/chip.c:857)
[ 1140.673491][    C0]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 1140.673502][    C0]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 14))
[ 1140.673507][    C0]  </IRQ>
[ 1140.673508][    C0]  <TASK>
[ 1140.673512][    C0]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 1140.673516][    C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
[ 1140.673525][    C0] Code: 74 24 10 e8 51 1a ff fd 48 89 ef e8 79 69 ff fd 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> 0a a2 f3 fd 65 8b 05 b3 7b 07 02 85 c0 74 0a 5b 5d c3 e8 87 2e
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	51                   	push   %rcx
   5:	1a ff                	sbb    %bh,%bh
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 79 69 ff fd       	call   0xfffffffffdff6989
  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 0a a2 f3 fd       	call   0xfffffffffdf3a239		<-- trapping instruction
  2f:	65 8b 05 b3 7b 07 02 	mov    %gs:0x2077bb3(%rip),%eax        # 0x2077be9
  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:	87 2e                	xchg   %ebp,(%rsi)

Code starting with the faulting instruction
===========================================
   0:	e8 0a a2 f3 fd       	call   0xfffffffffdf3a20f
   5:	65 8b 05 b3 7b 07 02 	mov    %gs:0x2077bb3(%rip),%eax        # 0x2077bbf
   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:	87 2e                	xchg   %ebp,(%rsi)
[ 1140.673528][    C0] RSP: 0018:ffffc90009f47a88 EFLAGS: 00000206
[ 1140.673532][    C0] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 0000000000000040
[ 1140.673534][    C0] RDX: 0000000000000000 RSI: ffffffffb0d86a21 RDI: 0000000000000001
[ 1140.673535][    C0] RBP: ffffffffb366e560 R08: 0000000000000001 R09: 0000000000000001
[ 1140.673537][    C0] R10: ffffffffb1c24257 R11: ffff888005ed0970 R12: 00000000ffffffff
[ 1140.673539][    C0] R13: 0000000000000001 R14: ffffffffb366e668 R15: 00000000ffffffff
[ 1140.673555][    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:634)
[ 1140.673567][    C0]  process_output_block (drivers/tty/n_tty.c:561)
[ 1140.673576][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[ 1140.673584][    C0]  n_tty_write (drivers/tty/n_tty.c:2378)
[ 1140.673587][    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)
[ 1140.673599][    C0]  ? n_tty_receive_signal_char (drivers/tty/n_tty.c:2348)
[ 1140.673605][    C0]  ? __init_waitqueue_head (kernel/sched/wait.c:458)
[ 1140.673615][    C0]  ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831)
[ 1140.673620][    C0]  ? iterate_tty_write (drivers/tty/tty_io.c:939 drivers/tty/tty_io.c:958)
[ 1140.673630][    C0]  iterate_tty_write (drivers/tty/tty_io.c:1007)
[ 1140.673636][    C0]  ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244)
[ 1140.673643][    C0]  file_tty_write.constprop.0 (drivers/tty/tty_io.c:1081)
[ 1140.673650][    C0]  vfs_write (fs/read_write.c:594 fs/read_write.c:686)
[ 1140.673661][    C0]  ? kernel_write (fs/read_write.c:667)
[ 1140.673667][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[ 1140.673676][    C0]  ? trace_rseq_update (./include/trace/events/rseq.h:11 (discriminator 21))
[ 1140.673687][    C0]  ? __rseq_handle_notify_resume (kernel/rseq.c:442)
[ 1140.673690][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[ 1140.673699][    C0]  ksys_write (fs/read_write.c:738)
[ 1140.673703][    C0]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1140.673708][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[ 1140.673717][    C0]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[ 1140.673724][    C0]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1140.673726][    C0] RIP: 0033:0x7fecccb7e257
[ 1140.673731][    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
[ 1140.673733][    C0] RSP: 002b:00007fff7377fab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1140.673736][    C0] RAX: ffffffffffffffda RBX: 00005560f77f12e0 RCX: 00007fecccb7e257
[ 1140.673738][    C0] RDX: 0000000000000001 RSI: 00005560f77f12e0 RDI: 0000000000000001
[ 1140.673739][    C0] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 1140.673741][    C0] R10: 0000000000000001 R11: 0000000000000246 R12: 00005560f77dc600


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