[ 694.405473] irq 4: nobody cared (try booting with the "irqpoll" option) [ 694.405623] CPU: 3 UID: 0 PID: 22590 Comm: perl Not tainted 6.12.0-rc4-virtme #1 [ 694.405709] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 694.405816] Call Trace: [ 694.405853] [ 694.405888] dump_stack_lvl+0x55/0x70 [ 694.405941] __report_bad_irq+0x2b/0xc0 [ 694.405990] note_interrupt+0x2a7/0x2f0 [ 694.406030] handle_irq_event+0x72/0x80 [ 694.406076] handle_edge_irq+0x8b/0x230 [ 694.406115] __common_interrupt+0x3c/0xb0 [ 694.406158] common_interrupt+0x80/0x90 [ 694.406204] [ 694.406231] [ 694.406255] asm_common_interrupt+0x26/0x40 [ 694.406302] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30 [ 694.406359] 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 7c 5a 68 45 <74> 05 c3 cc cc cc cc 0f 1f 44 00 00 c3 cc cc cc cc 0f 1f 00 90 90 [ 694.406526] RSP: 0018:ffffaa1bc1073d60 EFLAGS: 00000286 [ 694.406580] RAX: 00000000ffffffff RBX: 0000000000000001 RCX: 0000000000000017 [ 694.406658] RDX: ffffffffba59c1fd RSI: 0000000000000282 RDI: ffffffffbbf0c120 [ 694.406736] RBP: ffff9ef7c1f7c000 R08: 000000a1c2b646cc R09: 0000000000000001 [ 694.406812] R10: ffff9ef7c25031f8 R11: 0000000000000000 R12: 0000000000000001 [ 694.406879] R13: ffffffffbbf0c120 R14: 0000000000000282 R15: ffff9ef7c2503000 [ 694.406948] ? rpm_suspend+0x1ad/0x5e0 [ 694.406992] uart_write+0xb2/0x270 [ 694.407038] n_tty_write+0x1a3/0x520 [ 694.407083] ? __pfx_woken_wake_function+0x10/0x10 [ 694.407139] file_tty_write.constprop.0+0x147/0x330 [ 694.407191] vfs_write+0x335/0x470 [ 694.407241] ksys_write+0x63/0xe0 [ 694.407280] do_syscall_64+0x9e/0x1a0 [ 694.407322] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 694.407382] RIP: 0033:0x7f225a0ee957 [ 694.407423] 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 [ 694.407591] RSP: 002b:00007ffdd783c728 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 694.407669] RAX: ffffffffffffffda RBX: 000055fcf0cc40b0 RCX: 00007f225a0ee957 [ 694.407739] RDX: 0000000000000001 RSI: 000055fcf0cc40b0 RDI: 0000000000000001 [ 694.407816] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 694.407885] R10: 0000000000000001 R11: 0000000000000246 R12: 000055fcf0cb0580 [ 694.407954] R13: 000055fcf0c912a0 R14: 0000000000000001 R15: 000055fcf0cb0580 [ 694.408025] [ 694.408054] handlers: [ 694.408077] [<00000000f48cd21e>] serial8250_interrupt [ 694.408131] Disabling IRQ #4