[ 440.228154] irq 4: nobody cared (try booting with the "irqpoll" option) [ 440.228290] CPU: 3 PID: 5018 Comm: perl Not tainted 6.9.0-rc3-virtme #1 [ 440.228345] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 440.228443] Call Trace: [ 440.228470] <IRQ> [ 440.228493] dump_stack_lvl+0x55/0x70 [ 440.228534] __report_bad_irq+0x2b/0xc0 [ 440.228573] note_interrupt+0x2a7/0x2f0 [ 440.228604] handle_irq_event+0x72/0x80 [ 440.228637] handle_edge_irq+0x8b/0x230 [ 440.228665] __common_interrupt+0x3e/0xb0 [ 440.228701] common_interrupt+0x81/0xa0 [ 440.228738] </IRQ> [ 440.228762] <TASK> [ 440.228781] asm_common_interrupt+0x26/0x40 [ 440.228819] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30 [ 440.228867] 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 dc f4 cd 7c <74> 05 c3 cc cc cc cc 0f 1f 44 00 00 c3 cc cc cc cc 0f 1f 00 90 90 [ 440.229008] RSP: 0018:ffff996480983d38 EFLAGS: 00000286 [ 440.229054] RAX: 0000000000000000 RBX: ffffffff846ce240 RCX: 0000000000000017 [ 440.229119] RDX: ffffffff82f49ece RSI: 0000000000000282 RDI: ffffffff846ce240 [ 440.229176] RBP: 0000000000000001 R08: 00000066900ced08 R09: 0000000000000001 [ 440.229233] R10: ffff8a2cc2db4df8 R11: 0000000000000000 R12: 0000000000000001 [ 440.229289] R13: 0000000000000000 R14: ffff8a2cc2db5001 R15: ffff8a2cc1fe4000 [ 440.229347] ? rpm_suspend+0x1ae/0x5e0 [ 440.229391] uart_write+0x103/0x1d0 [ 440.229426] n_tty_write+0x1a4/0x520 [ 440.229461] ? __pfx_woken_wake_function+0x10/0x10 [ 440.229508] file_tty_write.constprop.0+0x15b/0x340 [ 440.229551] vfs_write+0x336/0x460 [ 440.229590] ksys_write+0x63/0xe0 [ 440.229622] do_syscall_64+0xa8/0x1b0 [ 440.229650] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 440.229698] RIP: 0033:0x7fec43c9d957 [ 440.229733] 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 [ 440.229864] RSP: 002b:00007fff16ef3498 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 440.229927] RAX: ffffffffffffffda RBX: 0000557cdeb70110 RCX: 00007fec43c9d957 [ 440.229989] RDX: 0000000000000001 RSI: 0000557cdeb70110 RDI: 0000000000000001 [ 440.230042] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 440.230096] R10: 0000000000000001 R11: 0000000000000246 R12: 0000557cdeb5c560 [ 440.230152] R13: 0000557cdeb3d2a0 R14: 0000000000000001 R15: 0000557cdeb5c560 [ 440.230211] </TASK> [ 440.230230] handlers: [ 440.230248] [<000000000ed73412>] serial8250_interrupt [ 440.230292] Disabling IRQ #4 WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr