[ 1942.298217][    C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[ 1942.298629][    C3] CPU: 3 UID: 0 PID: 9140 Comm: perl Not tainted 6.12.0-rc3-virtme #1
[ 1942.298890][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1942.299269][    C3] Call Trace:
[ 1942.299407][    C3]  <IRQ>
[ 1942.299500][    C3]  dump_stack_lvl+0x82/0xd0
[ 1942.299684][    C3]  __report_bad_irq+0x5f/0x180
[ 1942.299864][    C3]  note_interrupt+0x6b3/0x860
[ 1942.300049][    C3]  handle_irq_event+0x16d/0x1c0
[ 1942.300223][    C3]  handle_edge_irq+0x1fa/0xb60
[ 1942.300407][    C3]  __common_interrupt+0x82/0x170
[ 1942.300580][    C3]  common_interrupt+0x81/0xa0
[ 1942.300757][    C3]  </IRQ>
[ 1942.300847][    C3]  <TASK>
[ 1942.300939][    C3]  asm_common_interrupt+0x26/0x40
[ 1942.301112][    C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[ 1942.301330][    C3] Code: 10 e8 41 98 87 fd 48 89 ef e8 59 09 88 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 d5 05 fb 72 <74> 0e 5b 5d c3 cc cc cc cc e8 0f db ac fd eb dc 0f 1f 44 00 00 5b
[ 1942.301950][    C3] RSP: 0018:ffffc9000233faa0 EFLAGS: 00000286
[ 1942.302171][    C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff207e90a
[ 1942.302434][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8d08c301
[ 1942.302686][    C3] RBP: ffffffff90cb83e0 R08: 0000000000000001 R09: fffffbfff20799d0
[ 1942.302937][    C3] R10: ffffffff903cce87 R11: 0000000000000000 R12: 00000000ffffffff
[ 1942.303197][    C3] R13: 0000000000000001 R14: ffffffff90cb84e8 R15: 00000000ffffffff
[ 1942.303484][    C3]  ? _raw_spin_unlock_irqrestore+0x51/0x70
[ 1942.303708][    C3]  uart_write+0x220/0x920
[ 1942.303851][    C3]  process_output_block+0x13e/0x790
[ 1942.304028][    C3]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1942.304247][    C3]  n_tty_write+0x40c/0x790
[ 1942.304443][    C3]  ? __pfx_n_tty_write+0x10/0x10
[ 1942.304620][    C3]  ? trace_lock_acquire+0x14d/0x1f0
[ 1942.304799][    C3]  ? __pfx_woken_wake_function+0x10/0x10
[ 1942.304973][    C3]  ? iterate_tty_write+0x8f/0x540
[ 1942.305142][    C3]  ? lock_acquire+0x32/0xc0
[ 1942.305310][    C3]  ? iterate_tty_write+0x8f/0x540
[ 1942.305489][    C3]  iterate_tty_write+0x222/0x540
[ 1942.305669][    C3]  ? tty_ldisc_ref_wait+0x28/0x80
[ 1942.305844][    C3]  file_tty_write.constprop.0+0x1cf/0x360
[ 1942.306017][    C3]  vfs_write+0xa77/0x11d0
[ 1942.306149][    C3]  ? __pfx___lock_release+0x10/0x10
[ 1942.306314][    C3]  ? trace_lock_acquire+0x14d/0x1f0
[ 1942.306485][    C3]  ? __might_fault+0xc3/0x170
[ 1942.306656][    C3]  ? lock_acquire+0x32/0xc0
[ 1942.306827][    C3]  ? __pfx_vfs_write+0x10/0x10
[ 1942.307004][    C3]  ? __might_fault+0x11b/0x170
[ 1942.307180][    C3]  ? __rseq_handle_notify_resume+0x354/0x4e0
[ 1942.307406][    C3]  ksys_write+0xf5/0x1e0
[ 1942.307544][    C3]  ? __pfx_ksys_write+0x10/0x10
[ 1942.307727][    C3]  do_syscall_64+0xc1/0x1d0
[ 1942.307902][    C3]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1942.308111][    C3] RIP: 0033:0x7f0d59f5a957
[ 1942.308286][    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
[ 1942.308872][    C3] RSP: 002b:00007ffdd0f4a7e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1942.309137][    C3] RAX: ffffffffffffffda RBX: 0000565175be71f0 RCX: 00007f0d59f5a957
[ 1942.309387][    C3] RDX: 0000000000000001 RSI: 0000565175be71f0 RDI: 0000000000000001
[ 1942.309637][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 1942.309887][    C3] R10: 0000000000000001 R11: 0000000000000246 R12: 0000565175bd25e0
[ 1942.310150][    C3] R13: 0000565175bb32a0 R14: 0000000000000001 R15: 0000565175bd25e0
[ 1942.310454][    C3]  </TASK>
[ 1942.310585][    C3] handlers:
[ 1942.310719][    C3] [<ffffffff8b96d430>] serial8250_interrupt
[ 1942.311054][    C3] Disabling IRQ #4