[ 884.690990][ T4269] Mirror/redirect action on [ 940.279666][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 940.280042][ C3] CPU: 3 PID: 4113 Comm: perl Not tainted 6.9.0-rc1-virtme #1 [ 940.280276][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 940.280620][ C3] Call Trace: [ 940.280742][ C3] <IRQ> [ 940.280825][ C3] dump_stack_lvl+0x82/0xd0 [ 940.280992][ C3] __report_bad_irq+0x5f/0x180 [ 940.281148][ C3] note_interrupt+0x6b3/0x860 [ 940.281308][ C3] handle_irq_event+0x16d/0x1c0 [ 940.281461][ C3] handle_edge_irq+0x1fa/0xb60 [ 940.281624][ C3] __common_interrupt+0x7c/0x180 [ 940.281781][ C3] common_interrupt+0x7e/0x90 [ 940.281941][ C3] </IRQ> [ 940.282023][ C3] <TASK> [ 940.282103][ C3] asm_common_interrupt+0x26/0x40 [ 940.282260][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70 [ 940.282457][ C3] Code: 10 e8 01 6a 9b fd 48 89 ef e8 39 da 9b 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 e5 df 4f 78 <74> 0e 5b 5d c3 cc cc cc cc e8 2f d4 be fd eb dc 0f 1f 44 00 00 5b [ 940.282993][ C3] RSP: 0018:ffffc90003d9fa80 EFLAGS: 00000286 [ 940.283191][ C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff15a8109 [ 940.283445][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff87b3e831 [ 940.283679][ C3] RBP: ffffffff8b6211a0 R08: 0000000000000001 R09: fffffbfff15a32b0 [ 940.283919][ C3] R10: ffffffff8ad19587 R11: 0000000000000000 R12: 0000000000000ce8 [ 940.284153][ C3] R13: ffffffff8b6212a8 R14: ffffffff8b6211a0 R15: ffff888004410000 [ 940.284391][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70 [ 940.284614][ C3] uart_write+0x224/0x450 [ 940.284737][ C3] process_output_block+0x13e/0x790 [ 940.284891][ C3] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 940.285092][ C3] n_tty_write+0x412/0x7a0 [ 940.285249][ C3] ? __pfx_n_tty_write+0x10/0x10 [ 940.285400][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 940.285552][ C3] ? __pfx_woken_wake_function+0x10/0x10 [ 940.285709][ C3] ? iterate_tty_write+0x95/0x540 [ 940.285879][ C3] ? lock_acquire+0x32/0xc0 [ 940.286030][ C3] ? iterate_tty_write+0x95/0x540 [ 940.286190][ C3] iterate_tty_write+0x228/0x540 [ 940.286346][ C3] ? tty_ldisc_ref_wait+0x28/0x80 [ 940.286502][ C3] file_tty_write.constprop.0+0x1db/0x370 [ 940.286651][ C3] ? find_held_lock+0x2c/0x110 [ 940.286805][ C3] vfs_write+0x9e5/0x10a0 [ 940.286921][ C3] ? __pfx___lock_release+0x10/0x10 [ 940.287073][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 940.287227][ C3] ? lock_acquire+0x32/0xc0 [ 940.287379][ C3] ? __pfx_vfs_write+0x10/0x10 [ 940.287536][ C3] ? __might_fault+0x11b/0x170 [ 940.287698][ C3] ? __rseq_handle_notify_resume+0x354/0x4e0 [ 940.287889][ C3] ? __fget_light+0x53/0x1e0 [ 940.288044][ C3] ksys_write+0xf5/0x1e0 [ 940.288161][ C3] ? __pfx_ksys_write+0x10/0x10 [ 940.288323][ C3] do_syscall_64+0xc6/0x1e0 [ 940.288476][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 940.288661][ C3] RIP: 0033:0x7f3b2fba5957 [ 940.288820][ 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 [ 940.289347][ C3] RSP: 002b:00007fff7c681f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 940.289583][ C3] RAX: ffffffffffffffda RBX: 0000562db6f691b0 RCX: 00007f3b2fba5957 [ 940.289808][ C3] RDX: 0000000000000001 RSI: 0000562db6f691b0 RDI: 0000000000000001 [ 940.290039][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 940.290265][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 0000562db6f55590 [ 940.290487][ C3] R13: 0000562db6f362a0 R14: 0000000000000001 R15: 0000562db6f55590 [ 940.290727][ C3] </TASK> [ 940.290840][ C3] handlers: [ 940.290958][ C3] [<ffffffff864d9ad0>] serial8250_interrupt [ 940.291271][ C3] Disabling IRQ #4 WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr