[  518.299515] irq 51: nobody cared (try booting with the "irqpoll" option)
[  518.299631] CPU: 0 UID: 0 PID: 10160 Comm: perl Not tainted 6.19.0-rc1-virtme #1 PREEMPT(voluntary) 
[  518.299633] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  518.299635] Call Trace:
[  518.299638]  <IRQ>
[  518.299641]  dump_stack_lvl+0x4d/0x70
[  518.299647]  __report_bad_irq+0x35/0xb8
[  518.299650]  note_interrupt.cold+0x28/0x66
[  518.299651]  handle_irq_event+0x6e/0x80
[  518.299654]  handle_edge_irq+0xbc/0x180
[  518.299657]  __common_interrupt+0x40/0xd0
[  518.299660]  ? __sysvec_apic_timer_interrupt+0x52/0xf0
[  518.299662]  common_interrupt+0x7a/0x90
[  518.299666]  </IRQ>
[  518.299667]  <TASK>
[  518.299667]  asm_common_interrupt+0x26/0x40
[  518.299670] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30
[  518.299673] Code: 00 66 90 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 0f 1f 44 00 00 c6 07 00 f7 c6 00 02 00 00 74 01 fb 65 ff 0d e4 c2 e8 00 <74> 01 c3 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f
[  518.299674] RSP: 0018:ff7f1196c42bbd38 EFLAGS: 00000286
[  518.299677] RAX: 00000000ffffffff RBX: ff4ee81b81e50000 RCX: 0000000000000017
[  518.299678] RDX: ffffffff82dce675 RSI: 0000000000000282 RDI: ffffffff840c0680
[  518.299678] RBP: 0000000000000001 R08: 0000000000000001 R09: ff4ee81b82fdc800
[  518.299679] R10: ff7f1196c42bbe68 R11: 0000000000000001 R12: ffffffff840c0680
[  518.299680] R13: ff7f1196c0355000 R14: ff4ee81b82fdc800 R15: 0000000000000282
[  518.299681]  ? rpm_suspend+0x185/0x5e0
[  518.299685]  uart_write+0xb4/0x270
[  518.299689]  n_tty_write+0x155/0x560
[  518.299691]  ? swake_up_all+0xd0/0xd0
[  518.299694]  file_tty_write.isra.0+0x15b/0x2a0
[  518.299695]  vfs_write+0x258/0x4d0
[  518.299698]  ? __hrtimer_run_queues+0x161/0x2a0
[  518.299701]  ksys_write+0x73/0xe0
[  518.299702]  do_syscall_64+0xa4/0xfc0
[  518.299704]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  518.299705] RIP: 0033:0x7fa99c7aec5e
[  518.299706] Code: 4d 89 d8 e8 14 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 13 ff ff ff 0f 1f 00 f3 0f 1e fa
[  518.299707] RSP: 002b:00007fffb9dd5c80 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[  518.299708] RAX: ffffffffffffffda RBX: 00005615d2d67230 RCX: 00007fa99c7aec5e
[  518.299708] RDX: 0000000000000001 RSI: 00005615d2d67230 RDI: 0000000000000001
[  518.299709] RBP: 00007fffb9dd5c90 R08: 0000000000000000 R09: 0000000000000000
[  518.299709] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001
[  518.299709] R13: 00005615d2d28010 R14: 0000000000000001 R15: 00005615d2d67230
[  518.299710]  </TASK>
[  518.299711] handlers:
[  518.301112] [<000000006f46f3d6>] serial8250_interrupt
[  518.301142] Disabling IRQ #51
[  550.906169] tc (14140) used greatest stack depth: 11728 bytes left