[ 1637.266038][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 1637.266434][ C3] CPU: 3 PID: 8477 Comm: perl Not tainted 6.10.0-rc2-virtme #1 [ 1637.266685][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1637.267124][ C3] Call Trace: [ 1637.267257][ C3] [ 1637.267342][ C3] dump_stack_lvl+0x82/0xd0 [ 1637.267955][ C3] __report_bad_irq+0x5f/0x180 [ 1637.268116][ C3] note_interrupt+0x6b3/0x860 [ 1637.268283][ C3] handle_irq_event+0x16d/0x1c0 [ 1637.268440][ C3] handle_edge_irq+0x1fa/0xb60 [ 1637.268598][ C3] __common_interrupt+0x82/0x170 [ 1637.268754][ C3] common_interrupt+0x7e/0x90 [ 1637.268910][ C3] [ 1637.268991][ C3] [ 1637.269078][ C3] asm_common_interrupt+0x26/0x40 [ 1637.269238][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70 [ 1637.269449][ C3] Code: 10 e8 91 5e 92 fd 48 89 ef e8 09 cf 92 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 b5 be 46 6a <74> 0e 5b 5d c3 cc cc cc cc e8 1f 40 b6 fd eb dc 0f 1f 44 00 00 5b [ 1637.269998][ C3] RSP: 0018:ffffc900014bfac0 EFLAGS: 00000286 [ 1637.270195][ C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff31b034c [ 1637.270439][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff95bd09a1 [ 1637.270668][ C3] RBP: ffffffff99643060 R08: 0000000000000001 R09: fffffbfff31ab4a8 [ 1637.270896][ C3] R10: ffffffff98d5a547 R11: 0000000000000000 R12: 0000000000000001 [ 1637.271124][ C3] R13: 0000000000000286 R14: ffffffff99643060 R15: ffff88800747a000 [ 1637.271384][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70 [ 1637.271583][ C3] uart_write+0x13d/0x330 [ 1637.271708][ C3] process_output_block+0x13e/0x790 [ 1637.271863][ C3] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 1637.272059][ C3] n_tty_write+0x412/0x7a0 [ 1637.272220][ C3] ? __pfx_n_tty_write+0x10/0x10 [ 1637.272373][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1637.272531][ C3] ? __pfx_woken_wake_function+0x10/0x10 [ 1637.272692][ C3] ? iterate_tty_write+0x95/0x540 [ 1637.272847][ C3] ? lock_acquire+0x32/0xc0 [ 1637.273030][ C3] ? iterate_tty_write+0x95/0x540 [ 1637.273187][ C3] iterate_tty_write+0x228/0x540 [ 1637.273353][ C3] ? tty_ldisc_ref_wait+0x28/0x80 [ 1637.273510][ C3] file_tty_write.constprop.0+0x1db/0x370 [ 1637.273666][ C3] vfs_write+0xa18/0x10b0 [ 1637.273783][ C3] ? __pfx___lock_release+0x10/0x10 [ 1637.273932][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 1637.274085][ C3] ? __might_fault+0xc3/0x170 [ 1637.274252][ C3] ? lock_acquire+0x32/0xc0 [ 1637.274404][ C3] ? __pfx_vfs_write+0x10/0x10 [ 1637.274570][ C3] ? __might_fault+0x11b/0x170 [ 1637.274734][ C3] ? __rseq_handle_notify_resume+0x354/0x4e0 [ 1637.274925][ C3] ? __fget_light+0x53/0x1e0 [ 1637.275080][ C3] ksys_write+0xf5/0x1e0 [ 1637.275197][ C3] ? __pfx_ksys_write+0x10/0x10 [ 1637.275358][ C3] do_syscall_64+0xc1/0x1d0 [ 1637.275518][ C3] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1637.275710][ C3] RIP: 0033:0x7f3e14868957 [ 1637.275870][ 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 [ 1637.276408][ C3] RSP: 002b:00007ffde2a79ba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1637.276643][ C3] RAX: ffffffffffffffda RBX: 000055bdd22931d0 RCX: 00007f3e14868957 [ 1637.276870][ C3] RDX: 0000000000000001 RSI: 000055bdd22931d0 RDI: 0000000000000001 [ 1637.277106][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 1637.277345][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000055bdd227f5c0 [ 1637.277586][ C3] R13: 000055bdd22602a0 R14: 0000000000000001 R15: 000055bdd227f5c0 [ 1637.277828][ C3] [ 1637.277943][ C3] handlers: [ 1637.278063][ C3] [] serial8250_interrupt [ 1637.278416][ C3] Disabling IRQ #4