======================================
| # 90.51 [+0.00] [  824.238825] br1: port 1(vx10) entered disabled state
| # 90.51 [+0.00] [  889.186569] Mirror/redirect action on
| # 90.52 [+0.00] [  987.084121] tc (11976) used greatest stack depth: 23936 bytes left
| # 90.52 [+0.00] [ 1022.175819] irq 51: nobody cared (try booting with the "irqpoll" option)
# 90.52 [+0.00] [ 1022.176504] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# 90.52 [+0.00] [ 1022.176725] Call Trace:
# 90.52 [+0.00] [ 1022.176884]  <IRQ>
# 90.52 [+0.00] [ 1022.176976] dump_stack_lvl (lib/dump_stack.c:123) 
# 90.53 [+0.00] [ 1022.177158] __report_bad_irq (kernel/irq/spurious.c:214) 
# 90.53 [+0.00] [ 1022.177334] note_interrupt (kernel/irq/spurious.c:423) 
# 90.53 [+0.00] [ 1022.177506] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
# 90.53 [+0.00] [ 1022.177675] handle_edge_irq (kernel/irq/chip.c:833) 
# 90.53 [+0.00] [ 1022.177849] __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) 
# 90.53 [+0.00] [ 1022.178020] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14)) 
# 90.53 [+0.00] [ 1022.178191]  </IRQ>
# 90.53 [+0.00] [ 1022.178283]  <TASK>
# 90.53 [+0.00] [ 1022.178379] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
# 90.54 [+0.01] [ 1022.178550] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
# 90.54 [+0.00] [ 1022.178770] Code: 10 e8 81 9a 83 fd 48 89 ef e8 39 0f 84 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 85 94 16 6f <74> 0e 5b 5d c3 cc cc cc cc e8 6f f7 a8 fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	81 9a 83 fd 48 89 ef 	sbbl   $0xf39e8ef,-0x76b7027d(%rdx)
   9:	e8 39 0f 
   c:	84 fd                	test   %bh,%ch
   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 85 94 16 6f 	decl   %gs:0x6f169485(%rip)        # 0x6f1694af
  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 6f f7 a8 fd       	call   0xfffffffffda8f7a7
  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 6f f7 a8 fd       	call   0xfffffffffda8f77d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
# 90.55 [+0.01] [ 1022.179350] RSP: 0018:ffffc90000fd7aa0 EFLAGS: 00000286
# 90.55 [+0.00] [ 1022.179579] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff28440f3
# 90.55 [+0.00] [ 1022.179836] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff90ed32d1
# 90.55 [+0.00] [ 1022.180166] RBP: ffffffff94ae78a0 R08: 0000000000000001 R09: fffffbfff283f7df
# 90.55 [+0.00] [ 1022.180415] R10: ffffffff941fbeff R11: ffff888008c52300 R12: 00000000ffffffff
# 90.56 [+0.00] [ 1022.180663] R13: 0000000000000001 R14: ffffffff94ae79a8 R15: 00000000ffffffff
# 90.56 [+0.00] [ 1022.180924] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
# 90.56 [+0.00] [ 1022.181156] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:636) 
# 90.56 [+0.00] [ 1022.181292] process_output_block (drivers/tty/n_tty.c:574) 
# 90.56 [+0.00] [ 1022.181468] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
# 90.56 [+0.00] [ 1022.181686] n_tty_write (drivers/tty/n_tty.c:2390) 
# 90.56 [+0.00] [ 1022.181863] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360) 
# 90.57 [+0.00] [ 1022.182030] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
# 90.57 [+0.00] [ 1022.182198] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) 
# 90.57 [+0.00] [ 1022.182370] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967) 
# 90.57 [+0.00] [ 1022.182537] ? lock_acquire (kernel/locking/lockdep.c:5822) 
# 90.57 [+0.00] [ 1022.182703] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967) 
# 90.57 [+0.00] [ 1022.182877] iterate_tty_write (drivers/tty/tty_io.c:1015) 
# 90.57 [+0.00] [ 1022.183047] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
# 90.57 [+0.00] [ 1022.183217] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1090) 
# 90.58 [+0.00] [ 1022.183389] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
# 90.58 [+0.00] [ 1022.183526] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) 
# 90.58 [+0.00] [ 1022.183694] ? __pfx_vfs_write (fs/read_write.c:660) 
# 90.58 [+0.00] [ 1022.183867] ? clockevents_program_event (kernel/time/clockevents.c:326) 
# 90.58 [+0.00] [ 1022.184046] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3)) 
# 90.58 [+0.00] [ 1022.184261] ksys_write (fs/read_write.c:731) 
# 90.58 [+0.00] [ 1022.184389] ? __pfx_ksys_write (fs/read_write.c:721) 
# 90.58 [+0.00] [ 1022.184563] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
# 90.58 [+0.00] [ 1022.184736] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
# 90.59 [+0.00] [ 1022.184940] RIP: 0033:0x7ff0f985f957
# 90.59 [+0.00] [ 1022.185111] 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
# 90.59 [+0.01] [ 1022.185694] RSP: 002b:00007fffa542be98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
# 90.59 [+0.00] [ 1022.185945] RAX: ffffffffffffffda RBX: 0000561b790733f0 RCX: 00007ff0f985f957
# 90.60 [+0.00] [ 1022.186211] RDX: 0000000000000001 RSI: 0000561b790733f0 RDI: 0000000000000001
# 90.60 [+0.00] [ 1022.186462] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
# 90.60 [+0.00] [ 1022.186706] R10: 0000000000000001 R11: 0000000000000246 R12: 0000561b7905e5e0
# 90.60 [+0.00] [ 1022.186957] R13: 0000561b7903f2a0 R14: 0000000000000001 R15: 0000561b7905e5e0
| xx__-> echo $?
| 0
| xx__-> [  987.084121][T11976] tc (11976) used greatest stack depth: 23936 bytes left
| [ 1022.175819][    C0] irq 51: nobody cared (try booting with the "irqpoll" option)
[ 1022.176504][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1022.176725][    C0] Call Trace:
[ 1022.176884][    C0]  <IRQ>
[ 1022.176976][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1022.177158][ C0] __report_bad_irq (kernel/irq/spurious.c:214) 
[ 1022.177334][ C0] note_interrupt (kernel/irq/spurious.c:423) 
[ 1022.177506][ C0] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
[ 1022.177675][ C0] handle_edge_irq (kernel/irq/chip.c:833) 
[ 1022.177849][ 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) 
[ 1022.178020][ C0] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14)) 
[ 1022.178191][    C0]  </IRQ>
[ 1022.178283][    C0]  <TASK>
[ 1022.178379][ C0] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 1022.178550][ C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1022.178770][ C0] Code: 10 e8 81 9a 83 fd 48 89 ef e8 39 0f 84 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 85 94 16 6f <74> 0e 5b 5d c3 cc cc cc cc e8 6f f7 a8 fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	81 9a 83 fd 48 89 ef 	sbbl   $0xf39e8ef,-0x76b7027d(%rdx)
   9:	e8 39 0f 
   c:	84 fd                	test   %bh,%ch
   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 85 94 16 6f 	decl   %gs:0x6f169485(%rip)        # 0x6f1694af
  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 6f f7 a8 fd       	call   0xfffffffffda8f7a7
  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 6f f7 a8 fd       	call   0xfffffffffda8f77d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[ 1022.179350][    C0] RSP: 0018:ffffc90000fd7aa0 EFLAGS: 00000286
[ 1022.179579][    C0] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff28440f3
[ 1022.179836][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff90ed32d1
[ 1022.180166][    C0] RBP: ffffffff94ae78a0 R08: 0000000000000001 R09: fffffbfff283f7df
[ 1022.180415][    C0] R10: ffffffff941fbeff R11: ffff888008c52300 R12: 00000000ffffffff
[ 1022.180663][    C0] R13: 0000000000000001 R14: ffffffff94ae79a8 R15: 00000000ffffffff
[ 1022.180924][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 1022.181156][ C0] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:636) 
[ 1022.181292][ C0] process_output_block (drivers/tty/n_tty.c:574) 
[ 1022.181468][ C0] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 1022.181686][ C0] n_tty_write (drivers/tty/n_tty.c:2390) 
[ 1022.181863][ C0] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360) 
[ 1022.182030][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 1022.182198][ C0] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) 
[ 1022.182370][ C0] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967) 
[ 1022.182537][ C0] ? lock_acquire (kernel/locking/lockdep.c:5822) 
[ 1022.182703][ C0] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967) 
[ 1022.182877][ C0] iterate_tty_write (drivers/tty/tty_io.c:1015) 
[ 1022.183047][ C0] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
[ 1022.183217][ C0] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1090) 
[ 1022.183389][ C0] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 1022.183526][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) 
[ 1022.183694][ C0] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 1022.183867][ C0] ? clockevents_program_event (kernel/time/clockevents.c:326) 
[ 1022.184046][ C0] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3)) 
[ 1022.184261][ C0] ksys_write (fs/read_write.c:731) 
[ 1022.184389][ C0] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 1022.184563][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 1022.184736][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1022.184940][    C0] RIP: 0033:0x7ff0f985f957
[ 1022.185111][ 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
[ 1022.185694][    C0] RSP: 002b:00007fffa542be98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1022.185945][    C0] RAX: ffffffffffffffda RBX: 0000561b790733f0 RCX: 00007ff0f985f957
[ 1022.186211][    C0] RDX: 0000000000000001 RSI: 0000561b790733f0 RDI: 0000000000000001
[ 1022.186462][    C0] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 1022.186706][    C0] R10: 0000000000000001 R11: 0000000000000246 R12: 0000561b7905e5e0


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