[ 918.141972][ C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[ 918.142332][ C3] CPU: 3 PID: 4474 Comm: perl Not tainted 6.8.0-virtme #1
[ 918.142553][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 918.142936][ C3] Call Trace:
[ 918.143072][ C3]
[ 918.143166][ C3] dump_stack_lvl+0x64/0xb0
[ 918.143361][ C3] __report_bad_irq+0x5f/0x180
[ 918.143536][ C3] note_interrupt+0x6b3/0x860
[ 918.143711][ C3] handle_irq_event+0x16d/0x1c0
[ 918.143885][ C3] handle_edge_irq+0x1fa/0xb60
[ 918.144060][ C3] __common_interrupt+0x7c/0x180
[ 918.144242][ C3] common_interrupt+0x7e/0x90
[ 918.144409][ C3]
[ 918.144497][ C3]
[ 918.144588][ C3] asm_common_interrupt+0x26/0x40
[ 918.144759][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[ 918.144979][ C3] Code: 10 e8 41 9f a0 fd 48 89 ef e8 69 0b a1 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 25 8a 15 6a <74> 0e 5b 5d c3 cc cc cc cc e8 bf cc c3 fd eb dc 0f 1f 44 00 00 5b
[ 918.145571][ C3] RSP: 0018:ffffc900012afa80 EFLAGS: 00000286
[ 918.145790][ C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff321cb54
[ 918.146054][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff95ee3a71
[ 918.146310][ C3] RBP: ffffffff999c3f60 R08: 0000000000000001 R09: fffffbfff3217cb0
[ 918.146561][ C3] R10: ffffffff990be587 R11: 0000000000000000 R12: 0000000000000069
[ 918.146818][ C3] R13: ffffffff999c4068 R14: ffffffff999c3f60 R15: ffff888002640000
[ 918.147084][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70
[ 918.147302][ C3] uart_write+0x224/0x450
[ 918.147438][ C3] process_output_block+0x13e/0x790
[ 918.147606][ C3] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370
[ 918.147821][ C3] n_tty_write+0x412/0x7a0
[ 918.147997][ C3] ? __pfx_n_tty_write+0x10/0x10
[ 918.148167][ C3] ? __pfx_woken_wake_function+0x10/0x10
[ 918.148348][ C3] ? lock_acquire+0x1c1/0x220
[ 918.148515][ C3] ? iterate_tty_write+0x95/0x540
[ 918.148690][ C3] iterate_tty_write+0x228/0x540
[ 918.148867][ C3] ? tty_ldisc_ref_wait+0x28/0x80
[ 918.149042][ C3] file_tty_write.constprop.0+0x1db/0x370
[ 918.149220][ C3] vfs_write+0x9e5/0x10a0
[ 918.149355][ C3] ? lock_acquire+0x1c1/0x220
[ 918.149532][ C3] ? __pfx_vfs_write+0x10/0x10
[ 918.149712][ C3] ? __might_fault+0xc3/0x170
[ 918.149897][ C3] ? __fget_light+0x53/0x1e0
[ 918.150073][ C3] ksys_write+0xf5/0x1e0
[ 918.150207][ C3] ? __pfx_ksys_write+0x10/0x10
[ 918.150383][ C3] do_syscall_64+0xc6/0x1e0
[ 918.150558][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 918.150774][ C3] RIP: 0033:0x7ff5e88eb957
[ 918.150948][ 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
[ 918.151552][ C3] RSP: 002b:00007ffecc843f18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 918.151815][ C3] RAX: ffffffffffffffda RBX: 0000563b44a4c1b0 RCX: 00007ff5e88eb957
[ 918.152069][ C3] RDX: 0000000000000001 RSI: 0000563b44a4c1b0 RDI: 0000000000000001
[ 918.152328][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 918.152584][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 0000563b44a38590
[ 918.152838][ C3] R13: 0000563b44a192a0 R14: 0000000000000001 R15: 0000563b44a38590
[ 918.153106][ C3]
[ 918.153232][ C3] handlers:
[ 918.153363][ C3] [] serial8250_interrupt
[ 918.153721][ C3] Disabling IRQ #4
WAIT TIMEOUT stderr
Ctrl-C stderr
Ctrl-C stderr
WAIT TIMEOUT stderr