======================================
| # 98.67 [+0.00] [  895.970143] vx10: left promiscuous mode
| # 98.67 [+0.00] [  895.970501] br1: port 1(vx10) entered disabled state
| # 98.67 [+0.00] [  916.700743] Mirror/redirect action on
| # 98.67 [+0.00] [  993.428054] irq 51: nobody cared (try booting with the "irqpoll" option)
# 98.68 [+0.00] [  993.428815] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# 98.68 [+0.00] [  993.429062] Call Trace:
# 98.68 [+0.00] [  993.429214]  <IRQ>
# 98.68 [+0.00] [  993.429318] dump_stack_lvl (lib/dump_stack.c:123)
# 98.68 [+0.00] [  993.429536] __report_bad_irq (kernel/irq/spurious.c:214)
# 98.68 [+0.00] [  993.429724] note_interrupt (kernel/irq/spurious.c:423)
# 98.68 [+0.00] [  993.429918] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210)
# 98.68 [+0.00] [  993.430106] handle_edge_irq (kernel/irq/chip.c:833)
# 98.68 [+0.00] [  993.430292] __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)
# 98.69 [+0.00] [  993.430489] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14))
# 98.69 [+0.00] [  993.430673]  </IRQ>
# 98.69 [+0.00] [  993.430770]  <TASK>
# 98.69 [+0.00] [  993.430865] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693)
# 98.69 [+0.00] [  993.431064] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
# 98.69 [+0.00] [ 993.431363] Code: 10 e8 11 eb 8b fd 48 89 ef e8 d9 5f 8c 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 75 d4 f3 4c <74> 0e 5b 5d c3 cc cc cc cc e8 bf a8 b1 fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	11 eb                	adc    %ebp,%ebx
   4:	8b fd                	mov    %ebp,%edi
   6:	48 89 ef             	mov    %rbp,%rdi
   9:	e8 d9 5f 8c fd       	call   0xfffffffffd8c5fe7
   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 75 d4 f3 4c 	decl   %gs:0x4cf3d475(%rip)        # 0x4cf3d49f
  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 bf a8 b1 fd       	call   0xfffffffffdb1a8f7
  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 bf a8 b1 fd       	call   0xfffffffffdb1a8cd
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
# 98.70 [+0.00] [  993.432007] RSP: 0018:ffffc90000af7aa0 EFLAGS: 00000286
# 98.70 [+0.00] [  993.432238] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff6c8494e
# 98.70 [+0.00] [  993.432521] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb30ff0a1
# 98.70 [+0.00] [  993.432794] RBP: ffffffffb6ceb800 R08: 0000000000000001 R09: fffffbfff6c7ffef
# 98.70 [+0.00] [  993.433077] R10: ffffffffb63fff7f R11: ffff88800cbd0040 R12: 00000000ffffffff
# 98.70 [+0.00] [  993.433354] R13: 0000000000000001 R14: ffffffffb6ceb908 R15: 00000000ffffffff
# 98.71 [+0.00] [  993.433656] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
# 98.71 [+0.00] [  993.433899] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:636)
# 98.71 [+0.00] [  993.434046] process_output_block (drivers/tty/n_tty.c:574)
# 98.71 [+0.00] [  993.434225] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
# 98.71 [+0.00] [  993.434464] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
# 98.71 [+0.00] [  993.434707] n_tty_write (drivers/tty/n_tty.c:2390)
# 98.71 [+0.00] [  993.434903] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360)
# 98.71 [+0.00] [  993.435098] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37))
# 98.72 [+0.00] [  993.435280] ? __pfx_woken_wake_function (kernel/sched/wait.c:439)
# 98.72 [+0.00] [  993.435467] ? lock_acquire (kernel/locking/lockdep.c:5822)
# 98.72 [+0.00] [  993.435663] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967)
# 98.72 [+0.00] [  993.435850] iterate_tty_write (drivers/tty/tty_io.c:1015)
# 98.72 [+0.00] [  993.436048] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244)
# 98.72 [+0.00] [  993.436231] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1090)
# 98.72 [+0.00] [  993.436423] vfs_write (fs/read_write.c:586 fs/read_write.c:679)
# 98.72 [+0.00] [  993.436574] ? __pfx___lock_release (kernel/locking/lockdep.c:5501)
# 98.73 [+0.00] [  993.436757] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37))
# 98.73 [+0.00] [  993.436948] ? lock_acquire (kernel/locking/lockdep.c:5822)
# 98.73 [+0.00] [  993.437131] ? __pfx_vfs_write (fs/read_write.c:660)
# 98.73 [+0.00] [  993.437316] ? trace_rseq_update (./include/trace/events/rseq.h:11 (discriminator 37))
# 98.73 [+0.00] [  993.437509] ? __rseq_handle_notify_resume (kernel/rseq.c:333)
# 98.74 [+0.01] [  993.437747] ksys_write (fs/read_write.c:731)
# 98.74 [+0.00] [  993.437889] ? __pfx_ksys_write (fs/read_write.c:721)
# 98.74 [+0.00] [  993.438079] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
# 98.74 [+0.00] [  993.438260] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
# 98.74 [+0.00] [  993.438486] RIP: 0033:0x7f5a8691ab77
# 98.74 [+0.00] [ 993.438670] 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
# 98.75 [+0.00] [  993.439300] RSP: 002b:00007ffc7cca3f78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
# 98.75 [+0.00] [  993.439586] RAX: ffffffffffffffda RBX: 000055c79c8272b0 RCX: 00007f5a8691ab77
# 98.75 [+0.00] [  993.439853] RDX: 0000000000000001 RSI: 000055c79c8272b0 RDI: 0000000000000001
# 98.75 [+0.00] [  993.440129] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
# 98.76 [+0.00] [  993.440408] R10: 0000000000000001 R11: 0000000000000246 R12: 000055c79c8125e0
# 98.76 [+0.00] [  993.440694] R13: 000055c79c7f32a0 R14: 0000000000000001 R15: 000055c79c8125e0
| xx__-> echo $?
| 0
| xx__-> [  916.700743][T10785] Mirror/redirect action on
| [  993.428054][    C0] irq 51: nobody cared (try booting with the "irqpoll" option)
[  993.428815][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  993.429062][    C0] Call Trace:
[  993.429214][    C0]  <IRQ>
[ 993.429318][ C0] dump_stack_lvl (lib/dump_stack.c:123)
[ 993.429536][ C0] __report_bad_irq (kernel/irq/spurious.c:214)
[ 993.429724][ C0] note_interrupt (kernel/irq/spurious.c:423)
[ 993.429918][ C0] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210)
[ 993.430106][ C0] handle_edge_irq (kernel/irq/chip.c:833)
[ 993.430292][ 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)
[ 993.430489][ C0] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14))
[  993.430673][    C0]  </IRQ>
[  993.430770][    C0]  <TASK>
[ 993.430865][ C0] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693)
[ 993.431064][ C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
[ 993.431363][ C0] Code: 10 e8 11 eb 8b fd 48 89 ef e8 d9 5f 8c 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 75 d4 f3 4c <74> 0e 5b 5d c3 cc cc cc cc e8 bf a8 b1 fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	11 eb                	adc    %ebp,%ebx
   4:	8b fd                	mov    %ebp,%edi
   6:	48 89 ef             	mov    %rbp,%rdi
   9:	e8 d9 5f 8c fd       	call   0xfffffffffd8c5fe7
   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 75 d4 f3 4c 	decl   %gs:0x4cf3d475(%rip)        # 0x4cf3d49f
  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 bf a8 b1 fd       	call   0xfffffffffdb1a8f7
  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 bf a8 b1 fd       	call   0xfffffffffdb1a8cd
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[  993.432007][    C0] RSP: 0018:ffffc90000af7aa0 EFLAGS: 00000286
[  993.432238][    C0] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff6c8494e
[  993.432521][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb30ff0a1
[  993.432794][    C0] RBP: ffffffffb6ceb800 R08: 0000000000000001 R09: fffffbfff6c7ffef
[  993.433077][    C0] R10: ffffffffb63fff7f R11: ffff88800cbd0040 R12: 00000000ffffffff
[  993.433354][    C0] R13: 0000000000000001 R14: ffffffffb6ceb908 R15: 00000000ffffffff
[ 993.433656][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[ 993.433899][ C0] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:636)
[ 993.434046][ C0] process_output_block (drivers/tty/n_tty.c:574)
[ 993.434225][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[ 993.434464][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
[ 993.434707][ C0] n_tty_write (drivers/tty/n_tty.c:2390)
[ 993.434903][ C0] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360)
[ 993.435098][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37))
[ 993.435280][ C0] ? __pfx_woken_wake_function (kernel/sched/wait.c:439)
[ 993.435467][ C0] ? lock_acquire (kernel/locking/lockdep.c:5822)
[ 993.435663][ C0] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967)
[ 993.435850][ C0] iterate_tty_write (drivers/tty/tty_io.c:1015)
[ 993.436048][ C0] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244)
[ 993.436231][ C0] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1090)
[ 993.436423][ C0] vfs_write (fs/read_write.c:586 fs/read_write.c:679)
[ 993.436574][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5501)
[ 993.436757][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37))
[ 993.436948][ C0] ? lock_acquire (kernel/locking/lockdep.c:5822)
[ 993.437131][ C0] ? __pfx_vfs_write (fs/read_write.c:660)
[ 993.437316][ C0] ? trace_rseq_update (./include/trace/events/rseq.h:11 (discriminator 37))
[ 993.437509][ C0] ? __rseq_handle_notify_resume (kernel/rseq.c:333)
[ 993.437747][ C0] ksys_write (fs/read_write.c:731)
[ 993.437889][ C0] ? __pfx_ksys_write (fs/read_write.c:721)
[ 993.438079][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 993.438260][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  993.438486][    C0] RIP: 0033:0x7f5a8691ab77
[ 993.438670][ 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
[  993.439300][    C0] RSP: 002b:00007ffc7cca3f78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  993.439586][    C0] RAX: ffffffffffffffda RBX: 000055c79c8272b0 RCX: 00007f5a8691ab77
[  993.439853][    C0] RDX: 0000000000000001 RSI: 000055c79c8272b0 RDI: 0000000000000001
[  993.440129][    C0] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[  993.440408][    C0] R10: 0000000000000001 R11: 0000000000000246 R12: 000055c79c8125e0


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