[  980.096336][    C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[  980.096733][    C3] CPU: 3 PID: 4747 Comm: perl Not tainted 6.10.0-virtme #1
[  980.096987][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  980.097362][    C3] Call Trace:
[  980.097506][    C3]  <IRQ>
[  980.097595][    C3]  dump_stack_lvl+0x82/0xd0
[  980.097775][    C3]  __report_bad_irq+0x5f/0x180
[  980.097944][    C3]  note_interrupt+0x6b3/0x860
[  980.098114][    C3]  handle_irq_event+0x16d/0x1c0
[  980.098281][    C3]  handle_edge_irq+0x1fa/0xb60
[  980.098457][    C3]  __common_interrupt+0x82/0x170
[  980.098627][    C3]  common_interrupt+0x7e/0x90
[  980.098798][    C3]  </IRQ>
[  980.098886][    C3]  <TASK>
[  980.098975][    C3]  asm_common_interrupt+0x26/0x40
[  980.099144][    C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[  980.099363][    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 e4 79 <74> 0e 5b 5d c3 cc cc cc cc e8 ff 4c b4 fd eb dc 0f 1f 44 00 00 5b
[  980.099947][    C3] RSP: 0018:ffffc900007bfab8 EFLAGS: 00000286
[  980.100158][    C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1273386
[  980.100408][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff861f09c1
[  980.100669][    C3] RBP: ffffffff89c5afa0 R08: 0000000000000001 R09: fffffbfff126e4b0
[  980.100920][    C3] R10: ffffffff89372587 R11: 0000000000000000 R12: ffffffff89c5b0a8
[  980.101174][    C3] R13: ffff88800784cc00 R14: ffffffff89c5afa0 R15: 0000000000000286
[  980.101428][    C3]  ? _raw_spin_unlock_irqrestore+0x51/0x70
[  980.101639][    C3]  uart_write+0x13e/0x320
[  980.101768][    C3]  process_output_block+0x13e/0x790
[  980.101941][    C3]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[  980.102145][    C3]  n_tty_write+0x412/0x7a0
[  980.102316][    C3]  ? __pfx_n_tty_write+0x10/0x10
[  980.102481][    C3]  ? trace_lock_acquire+0x14d/0x1f0
[  980.102653][    C3]  ? __pfx_woken_wake_function+0x10/0x10
[  980.102823][    C3]  ? iterate_tty_write+0x95/0x540
[  980.102991][    C3]  ? lock_acquire+0x32/0xc0
[  980.103154][    C3]  ? iterate_tty_write+0x95/0x540
[  980.103332][    C3]  iterate_tty_write+0x228/0x540
[  980.103505][    C3]  ? tty_ldisc_ref_wait+0x28/0x80
[  980.103670][    C3]  file_tty_write.constprop.0+0x1db/0x370
[  980.103844][    C3]  vfs_write+0xa1b/0x10b0
[  980.103972][    C3]  ? __pfx_lock_acquire.part.0+0x10/0x10
[  980.104140][    C3]  ? __pfx_vfs_write+0x10/0x10
[  980.104304][    C3]  ? clockevents_program_event+0xf6/0x300
[  980.104476][    C3]  ? __fget_light+0x53/0x1e0
[  980.104640][    C3]  ? clockevents_program_event+0x1ea/0x300
[  980.104849][    C3]  ksys_write+0xf5/0x1e0
[  980.104974][    C3]  ? __pfx_ksys_write+0x10/0x10
[  980.105161][    C3]  do_syscall_64+0xc1/0x1d0
[  980.105331][    C3]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  980.105534][    C3] RIP: 0033:0x7f8bab47c957
[  980.105692][    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
[  980.106257][    C3] RSP: 002b:00007ffdbafecbe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  980.106504][    C3] RAX: ffffffffffffffda RBX: 000055fb5776e1d0 RCX: 00007f8bab47c957
[  980.106735][    C3] RDX: 0000000000000001 RSI: 000055fb5776e1d0 RDI: 0000000000000001
[  980.106967][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[  980.107194][    C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000055fb5775a5c0
[  980.107420][    C3] R13: 000055fb5773b2a0 R14: 0000000000000001 R15: 000055fb5775a5c0
[  980.107656][    C3]  </TASK>
[  980.107773][    C3] handlers:
[  980.107891][    C3] [<ffffffff84b06f90>] serial8250_interrupt
[  980.108246][    C3] Disabling IRQ #4