[ 1611.939529][    C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[ 1611.940007][    C3] CPU: 3 PID: 7793 Comm: perl Not tainted 6.10.0-rc2-virtme #1
[ 1611.940242][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1611.940586][    C3] Call Trace:
[ 1611.940706][    C3]  <IRQ>
[ 1611.940789][    C3]  dump_stack_lvl+0x82/0xd0
[ 1611.940954][    C3]  __report_bad_irq+0x5f/0x180
[ 1611.941112][    C3]  note_interrupt+0x6b3/0x860
[ 1611.941269][    C3]  handle_irq_event+0x16d/0x1c0
[ 1611.941429][    C3]  handle_edge_irq+0x1fa/0xb60
[ 1611.941592][    C3]  __common_interrupt+0x82/0x170
[ 1611.941749][    C3]  common_interrupt+0x7e/0x90
[ 1611.941902][    C3]  </IRQ>
[ 1611.941987][    C3]  <TASK>
[ 1611.942066][    C3]  asm_common_interrupt+0x26/0x40
[ 1611.942224][    C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[ 1611.942420][    C3] Code: 10 e8 81 4e 92 fd 48 89 ef e8 f9 be 92 fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d a5 ae 86 63 <74> 0e 5b 5d c3 cc cc cc cc e8 2f 30 b6 fd eb dc 0f 1f 44 00 00 5b
[ 1611.942957][    C3] RSP: 0018:ffffc90001bafac0 EFLAGS: 00000286
[ 1611.943154][    C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff3f30365
[ 1611.943388][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9c7d19b1
[ 1611.943629][    C3] RBP: ffffffffa0243060 R08: 0000000000000001 R09: fffffbfff3f2b4a8
[ 1611.943855][    C3] R10: ffffffff9f95a547 R11: 0000000000000000 R12: 0000000000000001
[ 1611.944083][    C3] R13: 0000000000000286 R14: ffffffffa0243060 R15: ffff888004fea000
[ 1611.944322][    C3]  ? _raw_spin_unlock_irqrestore+0x51/0x70
[ 1611.944523][    C3]  uart_write+0x13d/0x330
[ 1611.944641][    C3]  process_output_block+0x13e/0x790
[ 1611.944799][    C3]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1611.945002][    C3]  n_tty_write+0x412/0x7a0
[ 1611.945160][    C3]  ? __pfx_n_tty_write+0x10/0x10
[ 1611.945315][    C3]  ? trace_lock_acquire+0x14d/0x1f0
[ 1611.945468][    C3]  ? __pfx_woken_wake_function+0x10/0x10
[ 1611.945623][    C3]  ? iterate_tty_write+0x95/0x540
[ 1611.945778][    C3]  ? lock_acquire+0x32/0xc0
[ 1611.945928][    C3]  ? iterate_tty_write+0x95/0x540
[ 1611.946084][    C3]  iterate_tty_write+0x228/0x540
[ 1611.946243][    C3]  ? tty_ldisc_ref_wait+0x28/0x80
[ 1611.946407][    C3]  file_tty_write.constprop.0+0x1db/0x370
[ 1611.946568][    C3]  vfs_write+0xa18/0x10b0
[ 1611.946685][    C3]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1611.946847][    C3]  ? __pfx_vfs_write+0x10/0x10
[ 1611.947002][    C3]  ? clockevents_program_event+0xf6/0x300
[ 1611.947176][    C3]  ? __fget_light+0x53/0x1e0
[ 1611.947328][    C3]  ? clockevents_program_event+0x1ea/0x300
[ 1611.947526][    C3]  ksys_write+0xf5/0x1e0
[ 1611.947644][    C3]  ? __pfx_ksys_write+0x10/0x10
[ 1611.947801][    C3]  do_syscall_64+0xc1/0x1d0
[ 1611.947951][    C3]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1611.948137][    C3] RIP: 0033:0x7ffad4e06957
[ 1611.948294][    C3] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
[ 1611.948822][    C3] RSP: 002b:00007ffc844717b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1611.949059][    C3] RAX: ffffffffffffffda RBX: 000055ebcc624310 RCX: 00007ffad4e06957
[ 1611.949290][    C3] RDX: 0000000000000001 RSI: 000055ebcc624310 RDI: 0000000000000001
[ 1611.949523][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 1611.949747][    C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000055ebcc6105c0
[ 1611.949973][    C3] R13: 000055ebcc5f12a0 R14: 0000000000000001 R15: 000055ebcc6105c0
[ 1611.950212][    C3]  </TASK>
[ 1611.950326][    C3] handlers:
[ 1611.950443][    C3] [<ffffffff9b0f6570>] serial8250_interrupt
[ 1611.950774][    C3] Disabling IRQ #4