[ 1760.592502][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 1760.592908][ C3] CPU: 3 UID: 0 PID: 8680 Comm: perl Not tainted 6.11.0-rc4-virtme #1 [ 1760.593188][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1760.593611][ C3] Call Trace: [ 1760.593755][ C3] <IRQ> [ 1760.593855][ C3] dump_stack_lvl+0x82/0xd0 [ 1760.594057][ C3] __report_bad_irq+0x5f/0x180 [ 1760.594246][ C3] note_interrupt+0x6b3/0x860 [ 1760.594441][ C3] handle_irq_event+0x16d/0x1c0 [ 1760.594631][ C3] handle_edge_irq+0x1fa/0xb60 [ 1760.594825][ C3] __common_interrupt+0x82/0x170 [ 1760.595013][ C3] common_interrupt+0x7e/0x90 [ 1760.595199][ C3] </IRQ> [ 1760.595297][ C3] <TASK> [ 1760.595392][ C3] asm_common_interrupt+0x26/0x40 [ 1760.595576][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70 [ 1760.595832][ C3] Code: 10 e8 b1 20 8f fd 48 89 ef e8 59 91 8f fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d f5 5c a3 44 <74> 0e 5b 5d c3 cc cc cc cc e8 6f 48 b3 fd eb dc 0f 1f 44 00 00 5b [ 1760.596479][ C3] RSP: 0018:ffffc9000141fab8 EFLAGS: 00000286 [ 1760.596718][ C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff7d36807 [ 1760.596994][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffbb606ba1 [ 1760.597282][ C3] RBP: ffffffffbf275220 R08: 0000000000000001 R09: fffffbfff7d31918 [ 1760.597563][ C3] R10: ffffffffbe98c8c7 R11: 0000000000000000 R12: ffffffffbf275328 [ 1760.597839][ C3] R13: ffff8880054c6400 R14: ffffffffbf275220 R15: 0000000000000282 [ 1760.598122][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70 [ 1760.598366][ C3] uart_write+0x13e/0x320 [ 1760.598510][ C3] process_output_block+0x13e/0x790 [ 1760.598717][ C3] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 1760.598963][ C3] n_tty_write+0x412/0x7a0 [ 1760.599164][ C3] ? __pfx_n_tty_write+0x10/0x10 [ 1760.599350][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1760.599537][ C3] ? __pfx_woken_wake_function+0x10/0x10 [ 1760.599740][ C3] ? iterate_tty_write+0x95/0x540 [ 1760.599930][ C3] ? lock_acquire+0x32/0xc0 [ 1760.600119][ C3] ? iterate_tty_write+0x95/0x540 [ 1760.600308][ C3] iterate_tty_write+0x228/0x540 [ 1760.600498][ C3] ? tty_ldisc_ref_wait+0x28/0x80 [ 1760.600687][ C3] file_tty_write.constprop.0+0x1db/0x370 [ 1760.600872][ C3] vfs_write+0xa1b/0x10b0 [ 1760.601013][ C3] ? __pfx___lock_release+0x10/0x10 [ 1760.601194][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1760.601408][ C3] ? __might_fault+0xc3/0x170 [ 1760.601567][ C3] ? lock_acquire+0x32/0xc0 [ 1760.601749][ C3] ? __pfx_vfs_write+0x10/0x10 [ 1760.601908][ C3] ? __might_fault+0x11b/0x170 [ 1760.602079][ C3] ? __rseq_handle_notify_resume+0x354/0x4e0 [ 1760.602279][ C3] ? __fget_light+0x53/0x1e0 [ 1760.602440][ C3] ksys_write+0xf5/0x1e0 [ 1760.602558][ C3] ? __pfx_ksys_write+0x10/0x10 [ 1760.602729][ C3] do_syscall_64+0xc1/0x1d0 [ 1760.602904][ C3] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1760.603108][ C3] RIP: 0033:0x7efc765b6957 [ 1760.603273][ C3] 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 [ 1760.603845][ C3] RSP: 002b:00007ffd5068c368 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1760.604097][ C3] RAX: ffffffffffffffda RBX: 000056378a7f12b0 RCX: 00007efc765b6957 [ 1760.604371][ C3] RDX: 0000000000000001 RSI: 000056378a7f12b0 RDI: 0000000000000001 [ 1760.604600][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 1760.604828][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000056378a7dc5e0 [ 1760.605063][ C3] R13: 000056378a7bd2a0 R14: 0000000000000001 R15: 000056378a7dc5e0 [ 1760.605309][ C3] </TASK> [ 1760.605426][ C3] handlers: [ 1760.605557][ C3] [<ffffffffb9f20480>] serial8250_interrupt [ 1760.606337][ C3] Disabling IRQ #4