[  915.667602][    C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[  915.667972][    C3] CPU: 3 PID: 5397 Comm: perl Not tainted 6.10.0-virtme #1
[  915.668208][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  915.668551][    C3] Call Trace:
[  915.668673][    C3]  <IRQ>
[  915.668764][    C3]  dump_stack_lvl+0x82/0xd0
[  915.668935][    C3]  __report_bad_irq+0x5f/0x180
[  915.669097][    C3]  note_interrupt+0x6b3/0x860
[  915.669255][    C3]  handle_irq_event+0x16d/0x1c0
[  915.669421][    C3]  handle_edge_irq+0x1fa/0xb60
[  915.669586][    C3]  __common_interrupt+0x82/0x170
[  915.669756][    C3]  common_interrupt+0x7e/0x90
[  915.669916][    C3]  </IRQ>
[  915.670003][    C3]  <TASK>
[  915.670083][    C3]  asm_common_interrupt+0x26/0x40
[  915.670242][    C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[  915.670440][    C3] Code: 10 e8 e1 60 90 fd 48 89 ef e8 59 d1 90 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 15 bf c4 4f <74> 0e 5b 5d c3 cc cc cc cc e8 ff 4c b4 fd eb dc 0f 1f 44 00 00 5b
[  915.670987][    C3] RSP: 0018:ffffc9000170fab8 EFLAGS: 00000286
[  915.671186][    C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff66b33b8
[  915.671411][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb03f09c1
[  915.671647][    C3] RBP: ffffffffb3e5afa0 R08: 0000000000000001 R09: fffffbfff66ae4b0
[  915.671885][    C3] R10: ffffffffb3572587 R11: 0000000000000000 R12: ffffffffb3e5b0a8
[  915.672115][    C3] R13: ffff888007669000 R14: ffffffffb3e5afa0 R15: 0000000000000286
[  915.672364][    C3]  ? _raw_spin_unlock_irqrestore+0x51/0x70
[  915.672558][    C3]  uart_write+0x13e/0x320
[  915.672678][    C3]  process_output_block+0x13e/0x790
[  915.672844][    C3]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[  915.673050][    C3]  n_tty_write+0x412/0x7a0
[  915.673209][    C3]  ? __pfx_n_tty_write+0x10/0x10
[  915.673363][    C3]  ? trace_lock_acquire+0x14d/0x1f0
[  915.673528][    C3]  ? __pfx_woken_wake_function+0x10/0x10
[  915.673694][    C3]  ? iterate_tty_write+0x95/0x540
[  915.673844][    C3]  ? lock_acquire+0x32/0xc0
[  915.674000][    C3]  ? iterate_tty_write+0x95/0x540
[  915.674158][    C3]  iterate_tty_write+0x228/0x540
[  915.674333][    C3]  ? tty_ldisc_ref_wait+0x28/0x80
[  915.674492][    C3]  file_tty_write.constprop.0+0x1db/0x370
[  915.674659][    C3]  vfs_write+0xa1b/0x10b0
[  915.674793][    C3]  ? __pfx_lock_acquire.part.0+0x10/0x10
[  915.674954][    C3]  ? __pfx_vfs_write+0x10/0x10
[  915.675106][    C3]  ? clockevents_program_event+0xf6/0x300
[  915.675268][    C3]  ? __fget_light+0x53/0x1e0
[  915.675420][    C3]  ? clockevents_program_event+0x1ea/0x300
[  915.675612][    C3]  ksys_write+0xf5/0x1e0
[  915.675726][    C3]  ? __pfx_ksys_write+0x10/0x10
[  915.675883][    C3]  do_syscall_64+0xc1/0x1d0
[  915.676039][    C3]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  915.676227][    C3] RIP: 0033:0x7f45f37c3957
[  915.676393][    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
[  915.676925][    C3] RSP: 002b:00007ffd72264838 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  915.677176][    C3] RAX: ffffffffffffffda RBX: 000055d5512b9310 RCX: 00007f45f37c3957
[  915.677403][    C3] RDX: 0000000000000001 RSI: 000055d5512b9310 RDI: 0000000000000001
[  915.677624][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[  915.677845][    C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000055d5512a55c0
[  915.678064][    C3] R13: 000055d5512862a0 R14: 0000000000000001 R15: 000055d5512a55c0
[  915.678304][    C3]  </TASK>
[  915.678416][    C3] handlers:
[  915.678534][    C3] [<ffffffffaed06f90>] serial8250_interrupt
[  915.678934][    C3] Disabling IRQ #4