[ 1048.316760][    C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[ 1048.317173][    C3] CPU: 3 UID: 0 PID: 5368 Comm: perl Not tainted 6.11.0-rc2-virtme #1
[ 1048.317428][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1048.317799][    C3] Call Trace:
[ 1048.317946][    C3]  <IRQ>
[ 1048.318048][    C3]  dump_stack_lvl+0x82/0xd0
[ 1048.318221][    C3]  __report_bad_irq+0x5f/0x180
[ 1048.318395][    C3]  note_interrupt+0x6b3/0x860
[ 1048.318565][    C3]  handle_irq_event+0x16d/0x1c0
[ 1048.318732][    C3]  handle_edge_irq+0x1fa/0xb60
[ 1048.318902][    C3]  __common_interrupt+0x82/0x170
[ 1048.319074][    C3]  common_interrupt+0x7e/0x90
[ 1048.319237][    C3]  </IRQ>
[ 1048.319328][    C3]  <TASK>
[ 1048.319412][    C3]  asm_common_interrupt+0x26/0x40
[ 1048.319591][    C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[ 1048.319798][    C3] Code: 10 e8 a1 0c 8e fd 48 89 ef e8 49 7d 8e 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 35 49 a2 47 <74> 0e 5b 5d c3 cc cc cc cc e8 5f 33 b2 fd eb dc 0f 1f 44 00 00 5b
[ 1048.320354][    C3] RSP: 0018:ffffc900027ffab8 EFLAGS: 00000286
[ 1048.320561][    C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff7737229
[ 1048.320802][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb8617f61
[ 1048.321052][    C3] RBP: ffffffffbc27a320 R08: 0000000000000001 R09: fffffbfff7732308
[ 1048.321290][    C3] R10: ffffffffbb991847 R11: 0000000000000000 R12: ffffffffbc27a428
[ 1048.321520][    C3] R13: ffff8880059d7000 R14: ffffffffbc27a320 R15: 0000000000000282
[ 1048.321764][    C3]  ? _raw_spin_unlock_irqrestore+0x51/0x70
[ 1048.321973][    C3]  uart_write+0x13e/0x320
[ 1048.322106][    C3]  process_output_block+0x13e/0x790
[ 1048.322277][    C3]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1048.322473][    C3]  n_tty_write+0x412/0x7a0
[ 1048.322642][    C3]  ? __pfx_n_tty_write+0x10/0x10
[ 1048.322807][    C3]  ? trace_lock_acquire+0x14d/0x1f0
[ 1048.322972][    C3]  ? __pfx_woken_wake_function+0x10/0x10
[ 1048.323132][    C3]  ? iterate_tty_write+0x95/0x540
[ 1048.323297][    C3]  ? lock_acquire+0x32/0xc0
[ 1048.323452][    C3]  ? iterate_tty_write+0x95/0x540
[ 1048.323615][    C3]  iterate_tty_write+0x228/0x540
[ 1048.323782][    C3]  ? tty_ldisc_ref_wait+0x28/0x80
[ 1048.323956][    C3]  file_tty_write.constprop.0+0x1db/0x370
[ 1048.324127][    C3]  vfs_write+0xa1b/0x10b0
[ 1048.324258][    C3]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1048.324423][    C3]  ? __pfx_vfs_write+0x10/0x10
[ 1048.324592][    C3]  ? clockevents_program_event+0xf6/0x300
[ 1048.324764][    C3]  ? __fget_light+0x53/0x1e0
[ 1048.324924][    C3]  ? clockevents_program_event+0x1ea/0x300
[ 1048.325134][    C3]  ksys_write+0xf5/0x1e0
[ 1048.325254][    C3]  ? __pfx_ksys_write+0x10/0x10
[ 1048.325418][    C3]  do_syscall_64+0xc1/0x1d0
[ 1048.325580][    C3]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1048.325778][    C3] RIP: 0033:0x7fc017b95957
[ 1048.325951][    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
[ 1048.326526][    C3] RSP: 002b:00007fff5e866bd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1048.326764][    C3] RAX: ffffffffffffffda RBX: 00005608548df1d0 RCX: 00007fc017b95957
[ 1048.326996][    C3] RDX: 0000000000000001 RSI: 00005608548df1d0 RDI: 0000000000000001
[ 1048.327233][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 1048.327464][    C3] R10: 0000000000000001 R11: 0000000000000246 R12: 00005608548cb5c0
[ 1048.327692][    C3] R13: 00005608548ac2a0 R14: 0000000000000001 R15: 00005608548cb5c0
[ 1048.327967][    C3]  </TASK>
[ 1048.328085][    C3] handlers:
[ 1048.328210][    C3] [<ffffffffb6f1df70>] serial8250_interrupt
[ 1048.328600][    C3] Disabling IRQ #4