[ 999.638759][ C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[ 999.639198][ C3] CPU: 3 PID: 3665 Comm: perl Not tainted 6.9.0-virtme #1
[ 999.639431][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 999.639844][ C3] Call Trace:
[ 999.639987][ C3]
[ 999.640092][ C3] dump_stack_lvl+0x82/0xd0
[ 999.640288][ C3] __report_bad_irq+0x5f/0x180
[ 999.640479][ C3] note_interrupt+0x6b3/0x860
[ 999.640667][ C3] handle_irq_event+0x16d/0x1c0
[ 999.640859][ C3] handle_edge_irq+0x1fa/0xb60
[ 999.641061][ C3] __common_interrupt+0x82/0x170
[ 999.641244][ C3] common_interrupt+0x7e/0x90
[ 999.641430][ C3]
[ 999.641528][ C3]
[ 999.641622][ C3] asm_common_interrupt+0x26/0x40
[ 999.641809][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[ 999.642045][ C3] Code: 10 e8 c1 d5 93 fd 48 89 ef e8 39 46 94 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 2c 28 48 <74> 0e 5b 5d c3 cc cc cc cc e8 af b9 b7 fd eb dc 0f 1f 44 00 00 5b
[ 999.642707][ C3] RSP: 0018:ffffc90001effa88 EFLAGS: 00000286
[ 999.642954][ C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff75ee74c
[ 999.643226][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb7db9b41
[ 999.643507][ C3] RBP: ffffffffbb854580 R08: 0000000000000001 R09: fffffbfff75e98a8
[ 999.643786][ C3] R10: ffffffffbaf4c547 R11: 0000000000000000 R12: 000000000000083a
[ 999.644061][ C3] R13: ffffffffbb854688 R14: ffffffffbb854580 R15: ffff888004690000
[ 999.644347][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70
[ 999.644588][ C3] uart_write+0x224/0x450
[ 999.644738][ C3] process_output_block+0x13e/0x790
[ 999.644926][ C3] ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 999.645165][ C3] n_tty_write+0x412/0x7a0
[ 999.645358][ C3] ? __pfx_n_tty_write+0x10/0x10
[ 999.645546][ C3] ? trace_lock_acquire+0x14d/0x1f0
[ 999.645727][ C3] ? __pfx_woken_wake_function+0x10/0x10
[ 999.645912][ C3] ? iterate_tty_write+0x95/0x540
[ 999.646099][ C3] ? lock_acquire+0x32/0xc0
[ 999.646282][ C3] ? iterate_tty_write+0x95/0x540
[ 999.646474][ C3] iterate_tty_write+0x228/0x540
[ 999.646663][ C3] ? tty_ldisc_ref_wait+0x28/0x80
[ 999.646852][ C3] file_tty_write.constprop.0+0x1db/0x370
[ 999.647042][ C3] vfs_write+0x9dc/0x1070
[ 999.647180][ C3] ? __pfx___lock_release+0x10/0x10
[ 999.647366][ C3] ? trace_lock_acquire+0x14d/0x1f0
[ 999.647548][ C3] ? __might_fault+0xc3/0x170
[ 999.647732][ C3] ? lock_acquire+0x32/0xc0
[ 999.647921][ C3] ? __pfx_vfs_write+0x10/0x10
[ 999.648116][ C3] ? __might_fault+0x11b/0x170
[ 999.648306][ C3] ? __rseq_handle_notify_resume+0x354/0x4e0
[ 999.648539][ C3] ? __fget_light+0x53/0x1e0
[ 999.648728][ C3] ksys_write+0xf5/0x1e0
[ 999.648871][ C3] ? __pfx_ksys_write+0x10/0x10
[ 999.649072][ C3] do_syscall_64+0xc3/0x1d0
[ 999.649262][ C3] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 999.649495][ C3] RIP: 0033:0x7fb65bd80957
[ 999.649688][ 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
[ 999.650286][ C3] RSP: 002b:00007ffe28982f08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 999.650553][ C3] RAX: ffffffffffffffda RBX: 000055eef364a1e0 RCX: 00007fb65bd80957
[ 999.650837][ C3] RDX: 0000000000000001 RSI: 000055eef364a1e0 RDI: 0000000000000001
[ 999.651111][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 999.651430][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000055eef36365c0
[ 999.651669][ C3] R13: 000055eef36172a0 R14: 0000000000000001 R15: 000055eef36365c0
[ 999.652006][ C3]
[ 999.652127][ C3] handlers:
[ 999.652243][ C3] [] serial8250_interrupt
[ 999.652889][ C3] Disabling IRQ #4
WAIT TIMEOUT stderr
Ctrl-C stderr
Ctrl-C stderr
WAIT TIMEOUT stderr