[  507.686367] irq 51: nobody cared (try booting with the "irqpoll" option)
[  507.686451] CPU: 0 UID: 0 PID: 9804 Comm: perl Not tainted 6.19.0-rc5-virtme #1 PREEMPT(voluntary) 
[  507.686454] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  507.686455] Call Trace:
[  507.686458]  <IRQ>
[  507.686461]  dump_stack_lvl+0x4d/0x70
[  507.686467]  __report_bad_irq+0x35/0xb8
[  507.686469]  note_interrupt.cold+0x28/0x66
[  507.686470]  handle_irq_event+0x6e/0x80
[  507.686473]  handle_edge_irq+0xbc/0x180
[  507.686475]  __common_interrupt+0x40/0xd0
[  507.686478]  ? __sysvec_apic_timer_interrupt+0x52/0xf0
[  507.686480]  common_interrupt+0x7a/0x90
[  507.686484]  </IRQ>
[  507.686484]  <TASK>
[  507.686484]  asm_common_interrupt+0x26/0x40
[  507.686486] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30
[  507.686489] 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 a2 e8 00 <74> 01 c3 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f
[  507.686490] RSP: 0018:ff86cfe4410a7d38 EFLAGS: 00000286
[  507.686492] RAX: 00000000ffffffff RBX: ff455d4981d84000 RCX: 0000000000000017
[  507.686493] RDX: ffffffff917cf3b5 RSI: 0000000000000282 RDI: ffffffff92ac2680
[  507.686493] RBP: 0000000000000001 R08: 0000000000000001 R09: ff455d4984778800
[  507.686494] R10: ff86cfe4410a7e68 R11: 0000000000000001 R12: ffffffff92ac2680
[  507.686494] R13: ff86cfe44034d000 R14: ff455d4984778800 R15: 0000000000000282
[  507.686495]  ? rpm_suspend+0x185/0x5e0
[  507.686500]  uart_write+0xb4/0x270
[  507.686503]  n_tty_write+0x155/0x560
[  507.686505]  ? swake_up_all+0xd0/0xd0
[  507.686507]  file_tty_write.isra.0+0x15b/0x2a0
[  507.686508]  vfs_write+0x258/0x4d0
[  507.686511]  ? __hrtimer_run_queues+0x161/0x2a0
[  507.686514]  ksys_write+0x73/0xe0
[  507.686515]  do_syscall_64+0xa4/0xfc0
[  507.686516]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  507.686517] RIP: 0033:0x7f38bc39ac5e
[  507.686519] 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
[  507.686519] RSP: 002b:00007fff80dec980 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[  507.686520] RAX: ffffffffffffffda RBX: 0000563704e8d150 RCX: 00007f38bc39ac5e
[  507.686521] RDX: 0000000000000001 RSI: 0000563704e8d150 RDI: 0000000000000001
[  507.686521] RBP: 00007fff80dec990 R08: 0000000000000000 R09: 0000000000000000
[  507.686521] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001
[  507.686522] R13: 0000563704e4e010 R14: 0000000000000001 R15: 0000563704e8d150
[  507.686523]  </TASK>
[  507.686523] handlers:
[  507.687825] [<0000000003e95e24>] serial8250_interrupt
[  507.687855] Disabling IRQ #51