======================================
| [ 1635.809901][T28721] link1: entered promiscuous mode
| [ 1641.175105][T28730] netperf (28730) used greatest stack depth: 21232 bytes left
| [ 1641.176040][T28721] link1: left promiscuous mode
| [ 1654.057420][    C0] irq 52: nobody cared (try booting with the "irqpoll" option)
[ 1654.057699][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1654.057701][    C0] Call Trace:
[ 1654.057702][    C0]  <IRQ>
[ 1654.057704][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[ 1654.057713][    C0]  __report_bad_irq (kernel/irq/spurious.c:161)
[ 1654.057718][    C0]  note_interrupt.cold (kernel/irq/spurious.c:368)
[ 1654.057720][    C0]  ? serial_base_port_exit (??:?)
[ 1654.057726][    C0]  ? poll_spurious_irqs (kernel/irq/spurious.c:132)
[ 1654.057731][    C0]  handle_irq_event (kernel/irq/handle.c:251 kernel/irq/handle.c:263)
[ 1654.057735][    C0]  handle_edge_irq (kernel/irq/chip.c:859)
[ 1654.057739][    C0]  __common_interrupt (./include/linux/irqdesc.h:188 arch/x86/kernel/irq.c:209 arch/x86/kernel/irq.c:265 arch/x86/kernel/irq.c:280)
[ 1654.057743][    C0]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 arch/x86/kernel/apic/apic.c:1071)
[ 1654.057747][    C0]  common_interrupt (arch/x86/kernel/irq.c:273 (discriminator 39))
[ 1654.057751][    C0]  </IRQ>
[ 1654.057751][    C0]  <TASK>
[ 1654.057752][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[ 1654.057755][    C0]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:665)
[ 1654.057757][    C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 12) kernel/locking/spinlock.c:198 (discriminator 12))
[ 1654.057760][    C0] Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 c1 a3 93 fd 48 89 df e8 b9 f9 93 fd f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f <bf> 01 00 00 00 e8 10 dc 85 fd 65 8b 05 89 2b 78 02 85 c0 74 12 5b
All code
========
   0:	f5                   	cmc
   1:	53                   	push   %rbx
   2:	48 8b 74 24 10       	mov    0x10(%rsp),%rsi
   7:	48 89 fb             	mov    %rdi,%rbx
   a:	48 83 c7 18          	add    $0x18,%rdi
   e:	e8 c1 a3 93 fd       	call   0xfffffffffd93a3d4
  13:	48 89 df             	mov    %rbx,%rdi
  16:	e8 b9 f9 93 fd       	call   0xfffffffffd93f9d4
  1b:	f7 c5 00 02 00 00    	test   $0x200,%ebp
  21:	75 1f                	jne    0x42
  23:	9c                   	pushf
  24:	58                   	pop    %rax
  25:	f6 c4 02             	test   $0x2,%ah
  28:	75 2f                	jne    0x59
  2a:*	bf 01 00 00 00       	mov    $0x1,%edi		<-- trapping instruction
  2f:	e8 10 dc 85 fd       	call   0xfffffffffd85dc44
  34:	65 8b 05 89 2b 78 02 	mov    %gs:0x2782b89(%rip),%eax        # 0x2782bc4
  3b:	85 c0                	test   %eax,%eax
  3d:	74 12                	je     0x51
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	bf 01 00 00 00       	mov    $0x1,%edi
   5:	e8 10 dc 85 fd       	call   0xfffffffffd85dc1a
   a:	65 8b 05 89 2b 78 02 	mov    %gs:0x2782b89(%rip),%eax        # 0x2782b9a
  11:	85 c0                	test   %eax,%eax
  13:	74 12                	je     0x27
  15:	5b                   	pop    %rbx
[ 1654.057762][    C0] RSP: 0018:ffa000000221fa70 EFLAGS: 00000246
[ 1654.057766][    C0] RAX: 0000000000000082 RBX: ffffffffa0a43c40 RCX: ffffffff9c61d4b3
[ 1654.057767][    C0] RDX: ff11000014028040 RSI: ffffffff9d0ade38 RDI: ffffffff9ca7d760
[ 1654.057768][    C0] RBP: 0000000000000282 R08: 0000000000000000 R09: 0000000000000000
[ 1654.057769][    C0] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffffa0a43d48
[ 1654.057770][    C0] R13: 0000000000000001 R14: ffffffffa0a43d80 R15: ff1100001012c000
[ 1654.057773][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[ 1654.057777][    C0]  uart_write (./include/linux/spinlock.h:408 (discriminator 3) ./include/linux/serial_core.h:790 (discriminator 3) drivers/tty/serial/serial_core.c:91 (discriminator 3) drivers/tty/serial/serial_core.c:88 (discriminator 3) drivers/tty/serial/serial_core.c:630 (discriminator 3))
[ 1654.057781][    C0]  process_output_block (drivers/tty/n_tty.c:557)
[ 1654.057786][    C0]  n_tty_write (drivers/tty/n_tty.c:2366)
[ 1654.057791][    C0]  ? n_tty_receive_signal_char (drivers/tty/n_tty.c:1188)
[ 1654.057793][    C0]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1230 (discriminator 1))
[ 1654.057796][    C0]  ? __init_waitqueue_head (./include/linux/list.h:45 (discriminator 2))
[ 1654.057800][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[ 1654.057801][    C0]  ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:243)
[ 1654.057805][    C0]  iterate_tty_write (drivers/tty/tty_io.c:1006)
[ 1654.057808][    C0]  ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:243)
[ 1654.057811][    C0]  file_tty_write.isra.0 (drivers/tty/tty_io.c:1081)
[ 1654.057813][    C0]  ? redirected_tty_write (./include/linux/file_ref.h:121 (discriminator 8))
[ 1654.057816][    C0]  new_sync_write (fs/read_write.c:595)
[ 1654.057821][    C0]  ? new_sync_read (./include/linux/ioprio.h:41)
[ 1654.057823][    C0]  ? generic_write_checks_count (fs/read_write.c:1753)
[ 1654.057831][    C0]  vfs_write (fs/read_write.c:687)
[ 1654.057833][    C0]  ? vfs_read (fs/read_write.c:574)
[ 1654.057836][    C0]  ksys_write (fs/read_write.c:739)
[ 1654.057839][    C0]  ? __ia32_sys_read (fs/read_write.c:723)
[ 1654.057842][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[ 1654.057847][    C0]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[ 1654.057849][    C0]  ? irq_exit_rcu (kernel/softirq.c:754)
[ 1654.057853][    C0]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[ 1654.057854][    C0] RIP: 0033:0x7f459a3e054e
[ 1654.057858][    C0] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1654.057859][    C0] RSP: 002b:00007ffdd54af790 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1654.057861][    C0] RAX: ffffffffffffffda RBX: 0000561a958d71c0 RCX: 00007f459a3e054e
[ 1654.057862][    C0] RDX: 0000000000000001 RSI: 0000561a958d71c0 RDI: 0000000000000001
[ 1654.057862][    C0] RBP: 00007ffdd54af7a0 R08: 0000000000000000 R09: 0000000000000000
[ 1654.057863][    C0] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001


Finger prints:
__report_bad_irq:handle_irq_event:handle_edge_irq:__common_interrupt:common_interrupt