[  661.742993] irq 51: nobody cared (try booting with the "irqpoll" option)
[  661.743086] CPU: 0 UID: 0 PID: 9923 Comm: perl Not tainted 6.19.0-rc6-virtme #1 PREEMPT(voluntary) 
[  661.743089] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  661.743090] Call Trace:
[  661.743094]  <IRQ>
[  661.743097]  dump_stack_lvl+0x4d/0x70
[  661.743103]  __report_bad_irq+0x35/0xb8
[  661.743105]  note_interrupt.cold+0x28/0x66
[  661.743106]  handle_irq_event+0x6e/0x80
[  661.743109]  handle_edge_irq+0xbc/0x180
[  661.743112]  __common_interrupt+0x40/0xd0
[  661.743114]  ? __sysvec_apic_timer_interrupt+0x52/0xf0
[  661.743116]  common_interrupt+0x7a/0x90
[  661.743120]  </IRQ>
[  661.743120]  <TASK>
[  661.743121]  asm_common_interrupt+0x26/0x40
[  661.743123] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30
[  661.743127] 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 b2 e8 00 <74> 01 c3 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f
[  661.743127] RSP: 0018:ff3da232c225fd38 EFLAGS: 00000286
[  661.743129] RAX: 00000000ffffffff RBX: ff2d2172c1f64000 RCX: 0000000000000017
[  661.743131] RDX: ffffffff84bcf3f5 RSI: 0000000000000282 RDI: ffffffff85ec2680
[  661.743131] RBP: 0000000000000001 R08: 0000000000000001 R09: ff2d2172c23bfc00
[  661.743132] R10: ff3da232c225fe68 R11: 0000000000000001 R12: ffffffff85ec2680
[  661.743133] R13: ff3da232c0345000 R14: ff2d2172c23bfc00 R15: 0000000000000282
[  661.743134]  ? rpm_suspend+0x185/0x5e0
[  661.743139]  uart_write+0xb4/0x270
[  661.743142]  n_tty_write+0x155/0x560
[  661.743144]  ? swake_up_all+0xd0/0xd0
[  661.743146]  file_tty_write.isra.0+0x15b/0x2a0
[  661.743148]  vfs_write+0x258/0x4d0
[  661.743151]  ? __hrtimer_run_queues+0x161/0x2a0
[  661.743153]  ksys_write+0x73/0xe0
[  661.743155]  do_syscall_64+0xa4/0xfc0
[  661.743157]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  661.743158] RIP: 0033:0x7f76ba4fac5e
[  661.743160] Code: 4d 89 d8 e8 34 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
[  661.743160] RSP: 002b:00007ffef54644a0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[  661.743161] RAX: ffffffffffffffda RBX: 000055bc0f251200 RCX: 00007f76ba4fac5e
[  661.743161] RDX: 0000000000000001 RSI: 000055bc0f251200 RDI: 0000000000000001
[  661.743162] RBP: 00007ffef54644b0 R08: 0000000000000000 R09: 0000000000000000
[  661.743162] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001
[  661.743162] R13: 000055bc0f212010 R14: 0000000000000001 R15: 000055bc0f251200
[  661.743163]  </TASK>
[  661.743164] handlers:
[  661.744560] [<00000000b58fe51f>] serial8250_interrupt
[  661.744590] Disabling IRQ #51