[ 377.590950] irq 4: nobody cared (try booting with the "irqpoll" option) [ 377.591072] CPU: 3 PID: 3843 Comm: perl Not tainted 6.9.0-rc5-virtme #1 [ 377.591113] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 377.591193] Call Trace: [ 377.591221] [ 377.591249] dump_stack_lvl+0x55/0x70 [ 377.591285] __report_bad_irq+0x2b/0xc0 [ 377.591317] note_interrupt+0x2a7/0x2f0 [ 377.591341] handle_irq_event+0x72/0x80 [ 377.591372] handle_edge_irq+0x8b/0x230 [ 377.591396] __common_interrupt+0x3e/0xb0 [ 377.591425] common_interrupt+0x81/0xa0 [ 377.591454] [ 377.591473] [ 377.591487] asm_common_interrupt+0x26/0x40 [ 377.591515] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30 [ 377.591551] 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 bc e5 6d 44 <74> 05 c3 cc cc cc cc 0f 1f 44 00 00 c3 cc cc cc cc 0f 1f 00 90 90 [ 377.591654] RSP: 0018:ffffaaa740ccbd38 EFLAGS: 00000286 [ 377.591689] RAX: 0000000000000000 RBX: ffffffffbccce240 RCX: 0000000000000017 [ 377.591734] RDX: ffffffffbb54a45e RSI: 0000000000000282 RDI: ffffffffbccce240 [ 377.591778] RBP: 0000000000000001 R08: 00000057fe0c34af R09: 0000000000000001 [ 377.591823] R10: ffff942901cd0df8 R11: 0000000000000000 R12: 0000000000000001 [ 377.591867] R13: 0000000000000000 R14: ffff942901cd0401 R15: ffff9429020a0000 [ 377.591913] ? rpm_suspend+0x1ae/0x5e0 [ 377.591952] uart_write+0x103/0x1d0 [ 377.591982] n_tty_write+0x1a4/0x520 [ 377.592012] ? __pfx_woken_wake_function+0x10/0x10 [ 377.592046] file_tty_write.constprop.0+0x15b/0x340 [ 377.592078] vfs_write+0x336/0x460 [ 377.592109] ksys_write+0x63/0xe0 [ 377.592140] do_syscall_64+0xa8/0x1b0 [ 377.592175] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 377.592209] RIP: 0033:0x7fe524a3e957 [ 377.592237] 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 [ 377.592337] RSP: 002b:00007ffc898b46d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 377.592381] RAX: ffffffffffffffda RBX: 000056362a602110 RCX: 00007fe524a3e957 [ 377.592425] RDX: 0000000000000001 RSI: 000056362a602110 RDI: 0000000000000001 [ 377.592470] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 377.592515] R10: 0000000000000001 R11: 0000000000000246 R12: 000056362a5ee560 [ 377.592560] R13: 000056362a5cf2a0 R14: 0000000000000001 R15: 000056362a5ee560 [ 377.592602] [ 377.592625] handlers: [ 377.592643] [<000000005f76bb5a>] serial8250_interrupt [ 377.592693] Disabling IRQ #4 WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr