[ 30.680099][ T235] ip (235) used greatest stack depth: 23504 bytes left [ 45.747734][ T332] GACT probability NOT on [ 50.745766][ T395] Mirror/redirect action on [ 72.653702][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 72.654143][ C3] CPU: 3 PID: 223 Comm: perl Not tainted 6.8.0-rc7-virtme #1 [ 72.654384][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 72.654726][ C3] Call Trace: [ 72.654847][ C3] [ 72.654936][ C3] dump_stack_lvl+0x64/0xb0 [ 72.655103][ C3] __report_bad_irq+0x5f/0x180 [ 72.655269][ C3] note_interrupt+0x6b3/0x860 [ 72.655429][ C3] handle_irq_event+0x16d/0x1c0 [ 72.655590][ C3] handle_edge_irq+0x1fa/0xb60 [ 72.655755][ C3] __common_interrupt+0x7c/0x180 [ 72.655915][ C3] common_interrupt+0x7e/0x90 [ 72.656069][ C3] [ 72.656151][ C3] [ 72.656230][ C3] asm_common_interrupt+0x26/0x40 [ 72.656401][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70 [ 72.656605][ C3] Code: 10 e8 c1 61 a3 fd 48 89 ef e8 e9 cd a3 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 35 f3 98 4f <74> 0e 5b 5d c3 cc cc cc cc e8 8f 8a c5 fd eb dc 0f 1f 44 00 00 5b [ 72.657143][ C3] RSP: 0018:ffffc90000abfa88 EFLAGS: 00000286 [ 72.657343][ C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff6719903 [ 72.657576][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb06abfa1 [ 72.657809][ C3] RBP: ffffffffb41aabe0 R08: 0000000000000001 R09: fffffbfff6714a78 [ 72.658037][ C3] R10: ffffffffb38a53c7 R11: 0000000000000000 R12: 00000000000009bb [ 72.658272][ C3] R13: ffffffffb41aace8 R14: ffffffffb41aabe0 R15: ffff888002a80000 [ 72.658515][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70 [ 72.658725][ C3] uart_write+0x220/0x440 [ 72.658850][ C3] process_output_block+0x13e/0x790 [ 72.659019][ C3] ? lockdep_hardirqs_on_prepare.part.0+0x1b1/0x370 [ 72.659224][ C3] n_tty_write+0x414/0x7a0 [ 72.659384][ C3] ? __pfx_n_tty_write+0x10/0x10 [ 72.659543][ C3] ? __pfx_woken_wake_function+0x10/0x10 [ 72.659710][ C3] ? lock_acquire+0x1c1/0x220 [ 72.659869][ C3] ? iterate_tty_write+0x95/0x540 [ 72.660040][ C3] iterate_tty_write+0x229/0x540 [ 72.660200][ C3] ? tty_ldisc_ref_wait+0x28/0x80 [ 72.660367][ C3] file_tty_write.constprop.0+0x1db/0x370 [ 72.660534][ C3] vfs_write+0x9e9/0x10a0 [ 72.660660][ C3] ? lock_acquire+0x1c1/0x220 [ 72.660816][ C3] ? __pfx_vfs_write+0x10/0x10 [ 72.660972][ C3] ? __might_fault+0xc6/0x180 [ 72.661141][ C3] ? __fget_light+0x54/0x1e0 [ 72.661307][ C3] ksys_write+0xf5/0x1e0 [ 72.661429][ C3] ? __pfx_ksys_write+0x10/0x10 [ 72.661594][ C3] do_syscall_64+0xc9/0x1e0 [ 72.661759][ C3] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 72.661955][ C3] RIP: 0033:0x7f3950443957 [ 72.662121][ 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 [ 72.662662][ C3] RSP: 002b:00007ffccc37bba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 72.662892][ C3] RAX: ffffffffffffffda RBX: 000055ab5d50c070 RCX: 00007f3950443957 [ 72.663122][ C3] RDX: 0000000000000001 RSI: 000055ab5d50c070 RDI: 0000000000000001 [ 72.663353][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 72.663575][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000055ab5d4f8590 [ 72.663826][ C3] R13: 000055ab5d4d92a0 R14: 0000000000000001 R15: 000055ab5d4f8590 [ 72.664072][ C3] [ 72.664189][ C3] handlers: [ 72.664307][ C3] [] serial8250_interrupt [ 72.664652][ C3] Disabling IRQ #4 WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr