[  521.598466] irq 51: nobody cared (try booting with the "irqpoll" option)
[  521.598581] CPU: 0 UID: 0 PID: 7213 Comm: perl Not tainted 6.19.0-rc8-virtme #1 PREEMPT(voluntary) 
[  521.598584] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  521.598585] Call Trace:
[  521.598589]  <IRQ>
[  521.598592]  dump_stack_lvl+0x4d/0x70
[  521.598599]  __report_bad_irq+0x35/0xb8
[  521.598602]  note_interrupt.cold+0x28/0x66
[  521.598603]  handle_irq_event+0x6e/0x80
[  521.598606]  handle_edge_irq+0xbc/0x180
[  521.598608]  __common_interrupt+0x40/0xd0
[  521.598610]  ? __sysvec_apic_timer_interrupt+0x52/0xf0
[  521.598612]  common_interrupt+0x7a/0x90
[  521.598616]  </IRQ>
[  521.598616]  <TASK>
[  521.598617]  asm_common_interrupt+0x26/0x40
[  521.598619] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30
[  521.598622] 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
[  521.598623] RSP: 0018:ff6e84af01977d38 EFLAGS: 00000286
[  521.598625] RAX: 00000000ffffffff RBX: ff3d64fa01fc4000 RCX: 0000000000000017
[  521.598626] RDX: ffffffff97fcf675 RSI: 0000000000000282 RDI: ffffffff992c2680
[  521.598626] RBP: 0000000000000001 R08: 0000000000000001 R09: ff3d64fa02d42800
[  521.598627] R10: ff6e84af01977e68 R11: 0000000000000001 R12: ffffffff992c2680
[  521.598627] R13: ff6e84af0034d000 R14: ff3d64fa02d42800 R15: 0000000000000282
[  521.598628]  ? rpm_suspend+0x185/0x5e0
[  521.598632]  uart_write+0xb4/0x270
[  521.598635]  n_tty_write+0x155/0x560
[  521.598637]  ? swake_up_all+0xd0/0xd0
[  521.598639]  file_tty_write.isra.0+0x15b/0x2a0
[  521.598641]  vfs_write+0x258/0x4d0
[  521.598644]  ? __hrtimer_run_queues+0x161/0x2a0
[  521.598647]  ksys_write+0x73/0xe0
[  521.598648]  do_syscall_64+0xa4/0xfc0
[  521.598650]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  521.598651] RIP: 0033:0x7f35fc138c5e
[  521.598653] 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
[  521.598653] RSP: 002b:00007ffcc9896ca0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[  521.598654] RAX: ffffffffffffffda RBX: 00005638f8a63190 RCX: 00007f35fc138c5e
[  521.598654] RDX: 0000000000000001 RSI: 00005638f8a63190 RDI: 0000000000000001
[  521.598655] RBP: 00007ffcc9896cb0 R08: 0000000000000000 R09: 0000000000000000
[  521.598655] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001
[  521.598655] R13: 00005638f8a24010 R14: 0000000000000001 R15: 00005638f8a63190
[  521.598656]  </TASK>
[  521.598657] handlers:
[  521.600441] [<000000001468e020>] serial8250_interrupt
[  521.600475] Disabling IRQ #51