[ 426.161839] Mirror/redirect action on [ 436.992952] irq 4: nobody cared (try booting with the "irqpoll" option) [ 436.993070] CPU: 3 UID: 0 PID: 8048 Comm: perl Not tainted 6.11.0-rc1-virtme #1 [ 436.993148] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 436.993228] Call Trace: [ 436.993255] <IRQ> [ 436.993281] dump_stack_lvl+0x55/0x70 [ 436.993329] __report_bad_irq+0x2b/0xc0 [ 436.993365] note_interrupt+0x2a7/0x2f0 [ 436.993396] handle_irq_event+0x72/0x80 [ 436.993430] handle_edge_irq+0x8b/0x230 [ 436.993469] __common_interrupt+0x3c/0xb0 [ 436.993502] common_interrupt+0x80/0x90 [ 436.993541] </IRQ> [ 436.993562] <TASK> [ 436.993584] asm_common_interrupt+0x26/0x40 [ 436.993616] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30 [ 436.993656] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 c6 07 00 f7 c6 00 02 00 00 74 01 fb 65 ff 0d cc b8 a9 55 <74> 05 c3 cc cc cc cc 0f 1f 44 00 00 c3 cc cc cc cc 0f 1f 00 90 90 [ 436.993777] RSP: 0018:ffffadbec8663d60 EFLAGS: 00000286 [ 436.993824] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000017 [ 436.993878] RDX: ffffffffaa18615d RSI: 0000000000000286 RDI: ffffffffabaf8560 [ 436.993938] RBP: ffff8a2e02040000 R08: 00000065d19281e4 R09: 0000000000000001 [ 436.993989] R10: ffff8a2e0128e1f8 R11: 0000000000000000 R12: ffffffffabaf8560 [ 436.994042] R13: 0000000000000286 R14: ffff8a2e0128d400 R15: ffff8a2e0128e000 [ 436.994104] ? rpm_suspend+0x1ad/0x5e0 [ 436.994139] uart_write+0x89/0x150 [ 436.994177] n_tty_write+0x1a6/0x520 [ 436.994218] ? __pfx_woken_wake_function+0x10/0x10 [ 436.994258] file_tty_write.constprop.0+0x14d/0x330 [ 436.994302] vfs_write+0x332/0x460 [ 436.994337] ksys_write+0x63/0xe0 [ 436.994367] do_syscall_64+0x9e/0x1a0 [ 436.994398] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 436.994441] RIP: 0033:0x7f3fbf285957 [ 436.994472] 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 [ 436.994598] RSP: 002b:00007ffe179ff1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 436.994649] RAX: ffffffffffffffda RBX: 000055c321073110 RCX: 00007f3fbf285957 [ 436.994711] RDX: 0000000000000001 RSI: 000055c321073110 RDI: 0000000000000001 [ 436.994764] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 436.994816] R10: 0000000000000001 R11: 0000000000000246 R12: 000055c32105f560 [ 436.994868] R13: 000055c3210402a0 R14: 0000000000000001 R15: 000055c32105f560 [ 436.994927] </TASK> [ 436.994947] handlers: [ 436.994969] [<0000000093572d87>] serial8250_interrupt [ 436.995011] Disabling IRQ #4