[  642.819917] tc (8933) used greatest stack depth: 11648 bytes left
[  658.075482] irq 51: nobody cared (try booting with the "irqpoll" option)
[  658.075612] CPU: 0 UID: 0 PID: 7670 Comm: perl Not tainted 6.19.0-rc3-virtme #1 PREEMPT(voluntary) 
[  658.075616] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  658.075617] Call Trace:
[  658.075621]  <IRQ>
[  658.075626]  dump_stack_lvl+0x4d/0x70
[  658.075633]  __report_bad_irq+0x35/0xb8
[  658.075638]  note_interrupt.cold+0x28/0x66
[  658.075640]  handle_irq_event+0x6e/0x80
[  658.075646]  handle_edge_irq+0xbc/0x180
[  658.075649]  __common_interrupt+0x40/0xd0
[  658.075654]  ? __sysvec_apic_timer_interrupt+0x52/0xf0
[  658.075657]  common_interrupt+0x7a/0x90
[  658.075661]  </IRQ>
[  658.075661]  <TASK>
[  658.075662]  asm_common_interrupt+0x26/0x40
[  658.075666] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30
[  658.075671] 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 d2 e8 00 <74> 01 c3 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f
[  658.075672] RSP: 0018:ff3b98a341dbfd38 EFLAGS: 00000286
[  658.075675] RAX: 00000000ffffffff RBX: ff20e60fc1d80000 RCX: 0000000000000017
[  658.075676] RDX: ffffffff8f1cea75 RSI: 0000000000000282 RDI: ffffffff904c1680
[  658.075676] RBP: 0000000000000001 R08: 0000000000000001 R09: ff20e60fc380cc00
[  658.075677] R10: ff3b98a341dbfe68 R11: 0000000000000001 R12: ffffffff904c1680
[  658.075678] R13: ff3b98a34035d000 R14: ff20e60fc380cc00 R15: 0000000000000282
[  658.075679]  ? rpm_suspend+0x185/0x5e0
[  658.075684]  uart_write+0xb4/0x270
[  658.075691]  n_tty_write+0x155/0x560
[  658.075695]  ? swake_up_all+0xd0/0xd0
[  658.075699]  file_tty_write.isra.0+0x15b/0x2a0
[  658.075701]  vfs_write+0x258/0x4d0
[  658.075707]  ? __hrtimer_run_queues+0x161/0x2a0
[  658.075710]  ksys_write+0x73/0xe0
[  658.075712]  do_syscall_64+0xa4/0xfc0
[  658.075714]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  658.075717] RIP: 0033:0x7f97eb87ec5e
[  658.075720] 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
[  658.075721] RSP: 002b:00007ffe770e6250 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[  658.075723] RAX: ffffffffffffffda RBX: 000055cb9fdd1180 RCX: 00007f97eb87ec5e
[  658.075724] RDX: 0000000000000001 RSI: 000055cb9fdd1180 RDI: 0000000000000001
[  658.075725] RBP: 00007ffe770e6260 R08: 0000000000000000 R09: 0000000000000000
[  658.075725] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001
[  658.075726] R13: 000055cb9fd92010 R14: 0000000000000001 R15: 000055cb9fdd1180
[  658.075727]  </TASK>
[  658.075728] handlers:
[  658.078110] [<00000000d0c55c3f>] serial8250_interrupt
[  658.078161] Disabling IRQ #51