[ 415.923809] irq 4: nobody cared (try booting with the "irqpoll" option) [ 415.923967] CPU: 3 UID: 0 PID: 3856 Comm: perl Not tainted 6.11.0-virtme #1 [ 415.924035] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 415.924140] Call Trace: [ 415.924176] <IRQ> [ 415.924210] dump_stack_lvl+0x55/0x70 [ 415.924259] __report_bad_irq+0x2b/0xc0 [ 415.924305] note_interrupt+0x2a7/0x2f0 [ 415.924346] handle_irq_event+0x72/0x80 [ 415.924388] handle_edge_irq+0x8b/0x230 [ 415.924430] __common_interrupt+0x3c/0xb0 [ 415.924471] common_interrupt+0x80/0x90 [ 415.924517] </IRQ> [ 415.924543] <TASK> [ 415.924573] asm_common_interrupt+0x26/0x40 [ 415.924626] RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x30 [ 415.924683] 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 6b c8 71 <74> 05 c3 cc cc cc cc 0f 1f 44 00 00 c3 cc cc cc cc 0f 1f 00 90 90 [ 415.924850] RSP: 0018:ffffbd988134bd60 EFLAGS: 00000286 [ 415.924904] RAX: 00000000ffffffff RBX: 0000000000000001 RCX: 0000000000000017 [ 415.924981] RDX: ffffffff8df9d67d RSI: 0000000000000282 RDI: ffffffff8f908120 [ 415.925056] RBP: ffff984401e60000 R08: 00000060eabdae29 R09: 0000000000000001 [ 415.925132] R10: ffff9844024a11f8 R11: 0000000000000000 R12: 0000000000000001 [ 415.925208] R13: ffffffff8f908120 R14: 0000000000000282 R15: ffff9844024a1000 [ 415.925278] ? rpm_suspend+0x1ad/0x5e0 [ 415.925329] uart_write+0xb2/0x270 [ 415.925378] n_tty_write+0x1a3/0x520 [ 415.925424] ? __pfx_woken_wake_function+0x10/0x10 [ 415.925475] file_tty_write.constprop.0+0x147/0x330 [ 415.925528] vfs_write+0x335/0x470 [ 415.925573] ksys_write+0x63/0xe0 [ 415.925612] do_syscall_64+0x9e/0x1a0 [ 415.925653] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 415.925708] RIP: 0033:0x7fe2f27cc957 [ 415.925747] 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 [ 415.925917] RSP: 002b:00007ffecd3cad08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 415.925991] RAX: ffffffffffffffda RBX: 00005613a91890b0 RCX: 00007fe2f27cc957 [ 415.926060] RDX: 0000000000000001 RSI: 00005613a91890b0 RDI: 0000000000000001 [ 415.926135] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 415.926213] R10: 0000000000000001 R11: 0000000000000246 R12: 00005613a9175580 [ 415.926281] R13: 00005613a91562a0 R14: 0000000000000001 R15: 00005613a9175580 [ 415.926350] </TASK> [ 415.926380] handlers: [ 415.926409] [<00000000e6aee5cc>] serial8250_interrupt [ 415.926469] Disabling IRQ #4