======================================
| # 103.78 [+0.00] [ 1257.394164] br1: port 1(vx10) entered disabled state
| # 103.78 [+0.00] [ 1259.091609] ip (8196) used greatest stack depth: 23328 bytes left
| # 103.78 [+0.00] [ 1288.050460] Mirror/redirect action on
| # 103.78 [+0.00] [ 1311.468493] irq 4: nobody cared (try booting with the "irqpoll" option)
# 103.79 [+0.00] [ 1311.469194] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
# 103.79 [+0.00] [ 1311.469587] Call Trace:
# 103.79 [+0.00] [ 1311.469715]  <IRQ>
# 103.79 [+0.00] [ 1311.469803] dump_stack_lvl (lib/dump_stack.c:123) 
# 103.80 [+0.00] [ 1311.469991] __report_bad_irq (kernel/irq/spurious.c:214) 
# 103.80 [+0.00] [ 1311.470157] note_interrupt (kernel/irq/spurious.c:423) 
# 103.80 [+0.00] [ 1311.470329] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
# 103.80 [+0.00] [ 1311.470488] handle_edge_irq (kernel/irq/chip.c:833) 
# 103.80 [+0.00] [ 1311.470658] __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) 
# 103.80 [+0.00] [ 1311.470828] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14)) 
# 103.81 [+0.00] [ 1311.470987]  </IRQ>
# 103.81 [+0.00] [ 1311.471080]  <TASK>
# 103.81 [+0.00] [ 1311.471167] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
# 103.81 [+0.00] [ 1311.471326] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
# 103.81 [+0.00] [ 1311.471579] Code: 10 e8 21 9d 87 fd 48 89 ef e8 39 0e 88 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 15 09 3b 4f <74> 0e 5b 5d c3 cc cc cc cc e8 bf dd ac fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	21 9d 87 fd 48 89    	and    %ebx,-0x76b70279(%rbp)
   8:	ef                   	out    %eax,(%dx)
   9:	e8 39 0e 88 fd       	call   0xfffffffffd880e47
   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 15 09 3b 4f 	decl   %gs:0x4f3b0915(%rip)        # 0x4f3b093f
  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 dd ac fd       	call   0xfffffffffdacddf7
  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 dd ac fd       	call   0xfffffffffdacddcd
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
# 103.82 [+0.01] [ 1311.472196] RSP: 0018:ffffc9000903faa0 EFLAGS: 00000286
# 103.82 [+0.00] [ 1311.472418] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff67fe8bf
# 103.83 [+0.00] [ 1311.472674] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb0c8c001
# 103.83 [+0.00] [ 1311.472908] RBP: ffffffffb48b83e0 R08: 0000000000000001 R09: fffffbfff67f99d0
# 103.83 [+0.00] [ 1311.473152] R10: ffffffffb3fcce87 R11: 0000000000000000 R12: 00000000ffffffff
# 103.84 [+0.00] [ 1311.473399] R13: 0000000000000001 R14: ffffffffb48b84e8 R15: 00000000ffffffff
# 103.84 [+0.00] [ 1311.473648] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
# 103.84 [+0.00] [ 1311.473860] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:636) 
# 103.84 [+0.00] [ 1311.473997] process_output_block (drivers/tty/n_tty.c:574) 
# 103.84 [+0.00] [ 1311.474171] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
# 103.84 [+0.00] [ 1311.474378] n_tty_write (drivers/tty/n_tty.c:2390) 
# 103.85 [+0.00] [ 1311.474556] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360) 
# 103.85 [+0.00] [ 1311.474725] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
# 103.85 [+0.00] [ 1311.474899] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) 
# 103.85 [+0.00] [ 1311.475068] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967) 
# 103.85 [+0.00] [ 1311.475236] ? lock_acquire (kernel/locking/lockdep.c:5798) 
# 103.85 [+0.00] [ 1311.475395] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967) 
# 103.85 [+0.00] [ 1311.475557] iterate_tty_write (drivers/tty/tty_io.c:1015) 
# 103.86 [+0.00] [ 1311.475715] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
# 103.86 [+0.00] [ 1311.475887] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1090) 
# 103.86 [+0.00] [ 1311.476047] vfs_write (fs/read_write.c:590 fs/read_write.c:683) 
# 103.86 [+0.00] [ 1311.476174] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
# 103.86 [+0.00] [ 1311.476344] ? __pfx_vfs_write (fs/read_write.c:664) 
# 103.86 [+0.00] [ 1311.476506] ? clockevents_program_event (kernel/time/clockevents.c:326) 
# 103.86 [+0.00] [ 1311.476681] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3)) 
# 103.87 [+0.00] [ 1311.476885] ksys_write (fs/read_write.c:736) 
# 103.87 [+0.00] [ 1311.477018] ? __pfx_ksys_write (fs/read_write.c:726) 
# 103.87 [+0.00] [ 1311.477193] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
# 103.87 [+0.00] [ 1311.477363] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
# 103.87 [+0.00] [ 1311.477581] RIP: 0033:0x7ffbf0c4f957
# 103.87 [+0.00] [ 1311.477743] 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
# 103.88 [+0.01] [ 1311.478297] RSP: 002b:00007ffdd3440d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
# 103.88 [+0.00] [ 1311.478538] RAX: ffffffffffffffda RBX: 0000564f948aa2b0 RCX: 00007ffbf0c4f957
# 103.88 [+0.00] [ 1311.478779] RDX: 0000000000000001 RSI: 0000564f948aa2b0 RDI: 0000000000000001
# 103.88 [+0.00] [ 1311.479010] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
# 103.89 [+0.00] [ 1311.479245] R10: 0000000000000001 R11: 0000000000000246 R12: 0000564f948955e0
# 103.89 [+0.00] [ 1311.479494] R13: 0000564f948762a0 R14: 0000000000000001 R15: 0000564f948955e0
| xx__-> echo $?
| 0
| xx__-> [ 1288.050460][ T8405] Mirror/redirect action on
| [ 1311.468493][    C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[ 1311.469194][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1311.469587][    C3] Call Trace:
[ 1311.469715][    C3]  <IRQ>
[ 1311.469803][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1311.469991][ C3] __report_bad_irq (kernel/irq/spurious.c:214) 
[ 1311.470157][ C3] note_interrupt (kernel/irq/spurious.c:423) 
[ 1311.470329][ C3] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
[ 1311.470488][ C3] handle_edge_irq (kernel/irq/chip.c:833) 
[ 1311.470658][ C3] __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) 
[ 1311.470828][ C3] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14)) 
[ 1311.470987][    C3]  </IRQ>
[ 1311.471080][    C3]  <TASK>
[ 1311.471167][ C3] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 1311.471326][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1311.471579][ C3] Code: 10 e8 21 9d 87 fd 48 89 ef e8 39 0e 88 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 15 09 3b 4f <74> 0e 5b 5d c3 cc cc cc cc e8 bf dd ac fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	21 9d 87 fd 48 89    	and    %ebx,-0x76b70279(%rbp)
   8:	ef                   	out    %eax,(%dx)
   9:	e8 39 0e 88 fd       	call   0xfffffffffd880e47
   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 15 09 3b 4f 	decl   %gs:0x4f3b0915(%rip)        # 0x4f3b093f
  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 dd ac fd       	call   0xfffffffffdacddf7
  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 dd ac fd       	call   0xfffffffffdacddcd
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[ 1311.472196][    C3] RSP: 0018:ffffc9000903faa0 EFLAGS: 00000286
[ 1311.472418][    C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff67fe8bf
[ 1311.472674][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb0c8c001
[ 1311.472908][    C3] RBP: ffffffffb48b83e0 R08: 0000000000000001 R09: fffffbfff67f99d0
[ 1311.473152][    C3] R10: ffffffffb3fcce87 R11: 0000000000000000 R12: 00000000ffffffff
[ 1311.473399][    C3] R13: 0000000000000001 R14: ffffffffb48b84e8 R15: 00000000ffffffff
[ 1311.473648][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 1311.473860][ C3] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:636) 
[ 1311.473997][ C3] process_output_block (drivers/tty/n_tty.c:574) 
[ 1311.474171][ C3] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 1311.474378][ C3] n_tty_write (drivers/tty/n_tty.c:2390) 
[ 1311.474556][ C3] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360) 
[ 1311.474725][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 1311.474899][ C3] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) 
[ 1311.475068][ C3] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967) 
[ 1311.475236][ C3] ? lock_acquire (kernel/locking/lockdep.c:5798) 
[ 1311.475395][ C3] ? iterate_tty_write (drivers/tty/tty_io.c:948 drivers/tty/tty_io.c:967) 
[ 1311.475557][ C3] iterate_tty_write (drivers/tty/tty_io.c:1015) 
[ 1311.475715][ C3] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) 
[ 1311.475887][ C3] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1090) 
[ 1311.476047][ C3] vfs_write (fs/read_write.c:590 fs/read_write.c:683) 
[ 1311.476174][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 1311.476344][ C3] ? __pfx_vfs_write (fs/read_write.c:664) 
[ 1311.476506][ C3] ? clockevents_program_event (kernel/time/clockevents.c:326) 
[ 1311.476681][ C3] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3)) 
[ 1311.476885][ C3] ksys_write (fs/read_write.c:736) 
[ 1311.477018][ C3] ? __pfx_ksys_write (fs/read_write.c:726) 
[ 1311.477193][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 1311.477363][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1311.477581][    C3] RIP: 0033:0x7ffbf0c4f957
[ 1311.477743][ C3] 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
[ 1311.478297][    C3] RSP: 002b:00007ffdd3440d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1311.478538][    C3] RAX: ffffffffffffffda RBX: 0000564f948aa2b0 RCX: 00007ffbf0c4f957
[ 1311.478779][    C3] RDX: 0000000000000001 RSI: 0000564f948aa2b0 RDI: 0000000000000001
[ 1311.479010][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 1311.479245][    C3] R10: 0000000000000001 R11: 0000000000000246 R12: 0000564f948955e0


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