[ 1055.574612][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 1055.574986][ C3] CPU: 3 PID: 6487 Comm: perl Not tainted 6.9.0-rc7-virtme #1 [ 1055.575231][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1055.575610][ C3] Call Trace: [ 1055.575740][ C3] <IRQ> [ 1055.575824][ C3] dump_stack_lvl+0x82/0xd0 [ 1055.576002][ C3] __report_bad_irq+0x5f/0x180 [ 1055.576166][ C3] note_interrupt+0x6b3/0x860 [ 1055.576335][ C3] handle_irq_event+0x16d/0x1c0 [ 1055.576502][ C3] handle_edge_irq+0x1fa/0xb60 [ 1055.576665][ C3] __common_interrupt+0x7c/0x180 [ 1055.576832][ C3] common_interrupt+0x7e/0x90 [ 1055.576996][ C3] </IRQ> [ 1055.577144][ C3] <TASK> [ 1055.577225][ C3] asm_common_interrupt+0x26/0x40 [ 1055.577393][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70 [ 1055.577612][ C3] Code: 10 e8 61 74 99 fd 48 89 ef e8 99 e4 99 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 b7 ed 5c <74> 0e 5b 5d c3 cc cc cc cc e8 af de bc fd eb dc 0f 1f 44 00 00 5b [ 1055.578174][ C3] RSP: 0018:ffffc900032cfa80 EFLAGS: 00000286 [ 1055.578374][ C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff4c69f3b [ 1055.578611][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa3161041 [ 1055.578853][ C3] RBP: ffffffffa6c30220 R08: 0000000000000001 R09: fffffbfff4c650b0 [ 1055.579085][ C3] R10: ffffffffa6328587 R11: 0000000000000000 R12: 0000000000000232 [ 1055.579320][ C3] R13: ffffffffa6c30328 R14: ffffffffa6c30220 R15: ffff8880049c0000 [ 1055.579559][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70 [ 1055.579760][ C3] uart_write+0x224/0x450 [ 1055.579894][ C3] process_output_block+0x13e/0x790 [ 1055.580058][ C3] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 1055.580255][ C3] n_tty_write+0x412/0x7a0 [ 1055.580417][ C3] ? __pfx_n_tty_write+0x10/0x10 [ 1055.580575][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 1055.580732][ C3] ? __pfx_woken_wake_function+0x10/0x10 [ 1055.580887][ C3] ? iterate_tty_write+0x95/0x540 [ 1055.581040][ C3] ? lock_acquire+0x32/0xc0 [ 1055.581200][ C3] ? iterate_tty_write+0x95/0x540 [ 1055.581363][ C3] iterate_tty_write+0x228/0x540 [ 1055.581530][ C3] ? tty_ldisc_ref_wait+0x28/0x80 [ 1055.581690][ C3] file_tty_write.constprop.0+0x1db/0x370 [ 1055.581859][ C3] vfs_write+0x9e5/0x10a0 [ 1055.581983][ C3] ? __pfx___lock_release+0x10/0x10 [ 1055.582137][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 1055.582296][ C3] ? lock_acquire+0x32/0xc0 [ 1055.582459][ C3] ? __pfx_vfs_write+0x10/0x10 [ 1055.582626][ C3] ? __might_fault+0x11b/0x170 [ 1055.582790][ C3] ? __rseq_handle_notify_resume+0x354/0x4e0 [ 1055.583006][ C3] ? __fget_light+0x53/0x1e0 [ 1055.583166][ C3] ksys_write+0xf5/0x1e0 [ 1055.583288][ C3] ? __pfx_ksys_write+0x10/0x10 [ 1055.583452][ C3] do_syscall_64+0xc3/0x1d0 [ 1055.583609][ C3] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1055.583804][ C3] RIP: 0033:0x7ff35422f957 [ 1055.583971][ 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 [ 1055.584519][ C3] RSP: 002b:00007fff7ba263c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1055.584757][ C3] RAX: ffffffffffffffda RBX: 000055ef7386b310 RCX: 00007ff35422f957 [ 1055.584996][ C3] RDX: 0000000000000001 RSI: 000055ef7386b310 RDI: 0000000000000001 [ 1055.585239][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 1055.585484][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000055ef738575c0 [ 1055.585719][ C3] R13: 000055ef738382a0 R14: 0000000000000001 R15: 000055ef738575c0 [ 1055.585976][ C3] </TASK> [ 1055.586100][ C3] handlers: [ 1055.586219][ C3] [<ffffffffa1ae3d80>] serial8250_interrupt [ 1055.586570][ C3] Disabling IRQ #4 WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr