[ 1255.494850][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 1255.495311][ C3] CPU: 3 PID: 11398 Comm: perl Not tainted 6.10.0-rc4-virtme #1 [ 1255.495564][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1255.495961][ C3] Call Trace: [ 1255.496104][ C3] [ 1255.496199][ C3] dump_stack_lvl+0x82/0xd0 [ 1255.496391][ C3] __report_bad_irq+0x5f/0x180 [ 1255.496562][ C3] note_interrupt+0x6b3/0x860 [ 1255.496738][ C3] handle_irq_event+0x16d/0x1c0 [ 1255.496906][ C3] handle_edge_irq+0x1fa/0xb60 [ 1255.497103][ C3] __common_interrupt+0x82/0x170 [ 1255.497271][ C3] common_interrupt+0x7e/0x90 [ 1255.497455][ C3] [ 1255.497563][ C3] [ 1255.497651][ C3] asm_common_interrupt+0x26/0x40 [ 1255.497829][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70 [ 1255.498091][ C3] Code: 10 e8 01 4d 92 fd 48 89 ef e8 79 bd 92 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 ac c6 5f <74> 0e 5b 5d c3 cc cc cc cc e8 cf 2e b6 fd eb dc 0f 1f 44 00 00 5b [ 1255.498713][ C3] RSP: 0018:ffffc90000e9fab8 EFLAGS: 00000286 [ 1255.498995][ C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff46b0333 [ 1255.499299][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa03d1b81 [ 1255.499585][ C3] RBP: ffffffffa3e43020 R08: 0000000000000001 R09: fffffbfff46ab4a8 [ 1255.499858][ C3] R10: ffffffffa355a547 R11: 0000000000000000 R12: ffffffffa3e43128 [ 1255.500123][ C3] R13: ffff8880063c4000 R14: ffffffffa3e43020 R15: 0000000000000282 [ 1255.500403][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70 [ 1255.500637][ C3] uart_write+0x13e/0x320 [ 1255.500766][ C3] process_output_block+0x13e/0x790 [ 1255.500945][ C3] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 1255.501176][ C3] n_tty_write+0x412/0x7a0 [ 1255.501350][ C3] ? __pfx_n_tty_write+0x10/0x10 [ 1255.501524][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1255.501707][ C3] ? __pfx_woken_wake_function+0x10/0x10 [ 1255.501887][ C3] ? iterate_tty_write+0x95/0x540 [ 1255.502065][ C3] ? lock_acquire+0x32/0xc0 [ 1255.502248][ C3] ? iterate_tty_write+0x95/0x540 [ 1255.502423][ C3] iterate_tty_write+0x228/0x540 [ 1255.502613][ C3] ? tty_ldisc_ref_wait+0x28/0x80 [ 1255.502808][ C3] file_tty_write.constprop.0+0x1db/0x370 [ 1255.502980][ C3] vfs_write+0xa18/0x10b0 [ 1255.503128][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1255.503304][ C3] ? __pfx_vfs_write+0x10/0x10 [ 1255.503494][ C3] ? clockevents_program_event+0xf6/0x300 [ 1255.503675][ C3] ? __fget_light+0x53/0x1e0 [ 1255.503861][ C3] ? clockevents_program_event+0x1ea/0x300 [ 1255.504110][ C3] ksys_write+0xf5/0x1e0 [ 1255.504244][ C3] ? __pfx_ksys_write+0x10/0x10 [ 1255.504430][ C3] do_syscall_64+0xc1/0x1d0 [ 1255.504616][ C3] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1255.504845][ C3] RIP: 0033:0x7f3016de0957 [ 1255.505024][ 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 [ 1255.505615][ C3] RSP: 002b:00007ffd48d40f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1255.505920][ C3] RAX: ffffffffffffffda RBX: 000055f2f6d641d0 RCX: 00007f3016de0957 [ 1255.506196][ C3] RDX: 0000000000000001 RSI: 000055f2f6d641d0 RDI: 0000000000000001 [ 1255.506447][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 1255.506693][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000055f2f6d505c0 [ 1255.506941][ C3] R13: 000055f2f6d312a0 R14: 0000000000000001 R15: 000055f2f6d505c0 [ 1255.507294][ C3] [ 1255.507423][ C3] handlers: [ 1255.507551][ C3] [] serial8250_interrupt [ 1255.507933][ C3] Disabling IRQ #4