[ 1200.315977][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 1200.316413][ C3] CPU: 3 UID: 0 PID: 4856 Comm: perl Not tainted 6.11.0-rc5-virtme #1 [ 1200.316689][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1200.317092][ C3] Call Trace: [ 1200.317243][ C3] [ 1200.317341][ C3] dump_stack_lvl+0x82/0xd0 [ 1200.317544][ C3] __report_bad_irq+0x5f/0x180 [ 1200.317730][ C3] note_interrupt+0x6b3/0x860 [ 1200.317918][ C3] handle_irq_event+0x16d/0x1c0 [ 1200.318108][ C3] handle_edge_irq+0x1fa/0xb60 [ 1200.318313][ C3] __common_interrupt+0x82/0x170 [ 1200.318501][ C3] common_interrupt+0x7e/0x90 [ 1200.318689][ C3] [ 1200.318792][ C3] [ 1200.318887][ C3] asm_common_interrupt+0x26/0x40 [ 1200.319071][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70 [ 1200.319314][ C3] Code: 10 e8 f1 8b 8d fd 48 89 ef e8 99 fc 8d 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 b5 ca 21 6c <74> 0e 5b 5d c3 cc cc cc cc e8 4f b5 b1 fd eb dc 0f 1f 44 00 00 5b [ 1200.319968][ C3] RSP: 0018:ffffc90000a7fab8 EFLAGS: 00000286 [ 1200.320205][ C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff2e37e07 [ 1200.320482][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff93e1fde1 [ 1200.320762][ C3] RBP: ffffffff97a80260 R08: 0000000000000001 R09: fffffbfff2e32f18 [ 1200.321039][ C3] R10: ffffffff971978c7 R11: 0000000000000000 R12: ffffffff97a80368 [ 1200.321321][ C3] R13: ffff888005cf3400 R14: ffffffff97a80260 R15: 0000000000000286 [ 1200.321601][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70 [ 1200.321836][ C3] uart_write+0x13e/0x320 [ 1200.321980][ C3] process_output_block+0x13e/0x790 [ 1200.322162][ C3] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 1200.322403][ C3] n_tty_write+0x412/0x7a0 [ 1200.322599][ C3] ? __pfx_n_tty_write+0x10/0x10 [ 1200.322786][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1200.322976][ C3] ? __pfx_woken_wake_function+0x10/0x10 [ 1200.323163][ C3] ? iterate_tty_write+0x95/0x540 [ 1200.323344][ C3] ? lock_acquire+0x32/0xc0 [ 1200.323526][ C3] ? iterate_tty_write+0x95/0x540 [ 1200.323713][ C3] iterate_tty_write+0x228/0x540 [ 1200.323908][ C3] ? tty_ldisc_ref_wait+0x28/0x80 [ 1200.324097][ C3] file_tty_write.constprop.0+0x1db/0x370 [ 1200.324288][ C3] vfs_write+0xa1b/0x10b0 [ 1200.324435][ C3] ? __pfx___lock_release+0x10/0x10 [ 1200.324618][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1200.324805][ C3] ? __might_fault+0xc3/0x170 [ 1200.324983][ C3] ? lock_acquire+0x32/0xc0 [ 1200.325149][ C3] ? __pfx_vfs_write+0x10/0x10 [ 1200.325326][ C3] ? __might_fault+0x11b/0x170 [ 1200.325499][ C3] ? __rseq_handle_notify_resume+0x354/0x4e0 [ 1200.325714][ C3] ? __fget_light+0x53/0x1e0 [ 1200.325890][ C3] ksys_write+0xf5/0x1e0 [ 1200.326019][ C3] ? __pfx_ksys_write+0x10/0x10 [ 1200.326197][ C3] do_syscall_64+0xc1/0x1d0 [ 1200.326371][ C3] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1200.326586][ C3] RIP: 0033:0x7fe2f3789957 [ 1200.326774][ 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 [ 1200.327435][ C3] RSP: 002b:00007ffd3995b228 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1200.327691][ C3] RAX: ffffffffffffffda RBX: 00005619aceee2b0 RCX: 00007fe2f3789957 [ 1200.327936][ C3] RDX: 0000000000000001 RSI: 00005619aceee2b0 RDI: 0000000000000001 [ 1200.328181][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 1200.328431][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 00005619aced95e0 [ 1200.328686][ C3] R13: 00005619aceba2a0 R14: 0000000000000001 R15: 00005619aced95e0 [ 1200.328947][ C3] [ 1200.329074][ C3] handlers: [ 1200.329201][ C3] [] serial8250_interrupt [ 1200.329607][ C3] Disabling IRQ #4