[ 1689.582565][ T2439] link1: entered promiscuous mode
[ 1694.707202][ T2439] link1: left promiscuous mode
[ 1695.776302][ T2475] link1: entered promiscuous mode
[ 1701.181328][ T2484] netperf (2484) used greatest stack depth: 22416 bytes left
[ 1701.182447][ T2475] link1: left promiscuous mode
[ 1702.490484][ T2515] link1: entered promiscuous mode
[ 1707.734611][ T2515] link1: left promiscuous mode
[ 1708.947895][ T2553] link1: entered promiscuous mode
[ 1714.496480][ T2564] netperf (2564) used greatest stack depth: 21568 bytes left
[ 1714.498111][ T2553] link1: left promiscuous mode
[ 1715.833442][ T2595] link1: entered promiscuous mode
[ 1721.103203][ T2595] link1: left promiscuous mode
[ 1722.484668][ T2633] link1: entered promiscuous mode
[ 1727.999840][ T2633] link1: left promiscuous mode
[ 1747.551842][ C0] irq 52: nobody cared (try booting with the "irqpoll" option)
[ 1747.552302][ C0] CPU: 0 UID: 0 PID: 2397 Comm: perl Not tainted 7.2.0-rc6-virtme #1 PREEMPT(full)
[ 1747.552307][ C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1747.552309][ C0] Call Trace:
[ 1747.552311][ C0]
[ 1747.552313][ C0] dump_stack_lvl+0x6f/0xa0
[ 1747.552325][ C0] __report_bad_irq+0x66/0x14a
[ 1747.552332][ C0] note_interrupt.cold+0x29/0xef
[ 1747.552335][ C0] ? serial_base_port_exit+0x20/0x20
[ 1747.552342][ C0] ? poll_spurious_irqs+0x160/0x160
[ 1747.552350][ C0] handle_irq_event+0x166/0x1c0
[ 1747.552355][ C0] handle_edge_irq+0x2f8/0x8a0
[ 1747.552362][ C0] __common_interrupt+0xae/0x270
[ 1747.552366][ C0] ? __sysvec_apic_timer_interrupt+0x15f/0x480
[ 1747.552371][ C0] common_interrupt+0xb0/0xf0
[ 1747.552376][ C0]
[ 1747.552377][ C0]
[ 1747.552378][ C0] ? sysvec_apic_timer_interrupt+0xaa/0xe0
[ 1747.552382][ C0] asm_common_interrupt+0x26/0x40
[ 1747.552385][ C0] RIP: 0010:_raw_spin_unlock_irqrestore+0x36/0x80
[ 1747.552390][ C0] Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 c1 73 83 fd 48 89 df e8 b9 c9 83 fd f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 10 ac 75 fd 65 8b 05 89 9b 6b 02 85 c0 74 12 5b
[ 1747.552392][ C0] RSP: 0018:ffa00000023e7a70 EFLAGS: 00000246
[ 1747.552396][ C0] RAX: 0000000000000082 RBX: ffffffff88c80c40 RCX: ffffffff849234b3
[ 1747.552398][ C0] RDX: ff1100001788c6c0 RSI: ffffffff852c4f6a RDI: ffffffff84c7d760
[ 1747.552399][ C0] RBP: 0000000000000282 R08: 0000000000000000 R09: 0000000000000000
[ 1747.552401][ C0] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff88c80d48
[ 1747.552402][ C0] R13: 0000000000000001 R14: ffffffff88c80d80 R15: ff110000019f4000
[ 1747.552415][ C0] ? _raw_spin_unlock_irqrestore+0x53/0x80
[ 1747.552421][ C0] uart_write+0x231/0x990
[ 1747.552427][ C0] process_output_block+0x113/0x6d0
[ 1747.552434][ C0] n_tty_write+0x3b4/0x8f0
[ 1747.552442][ C0] ? n_tty_receive_signal_char+0x110/0x110
[ 1747.552445][ C0] ? _mutex_trylock_nest_lock+0x235/0x390
[ 1747.552450][ C0] ? __init_waitqueue_head+0x160/0x160
[ 1747.552455][ C0] ? lock_acquire.part.0+0xbc/0x260
[ 1747.552459][ C0] ? tty_ldisc_ref_wait+0x28/0x80
[ 1747.552466][ C0] iterate_tty_write+0x291/0x590
[ 1747.552471][ C0] ? tty_ldisc_ref_wait+0x28/0x80
[ 1747.552477][ C0] file_tty_write.isra.0+0x1bd/0x290
[ 1747.552480][ C0] ? redirected_tty_write+0xd0/0xd0
[ 1747.552484][ C0] new_sync_write+0x33e/0x760
[ 1747.552490][ C0] ? find_held_lock+0x2b/0x80
[ 1747.552494][ C0] ? new_sync_read+0x750/0x750
[ 1747.552496][ C0] ? generic_write_checks_count+0x480/0x480
[ 1747.552510][ C0] vfs_write+0x6a4/0xbe0
[ 1747.552513][ C0] ? vfs_read+0x3dd/0x7b0
[ 1747.552519][ C0] ksys_write+0x116/0x250
[ 1747.552523][ C0] ? __ia32_sys_read+0xc0/0xc0
[ 1747.552528][ C0] ? rcu_is_watching+0x15/0xd0
[ 1747.552535][ C0] do_syscall_64+0x117/0x590
[ 1747.552538][ C0] ? irq_exit_rcu+0x1a/0x30
[ 1747.552543][ C0] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1747.552546][ C0] RIP: 0033:0x7f42f2bd554e
[ 1747.552550][ C0] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
[ 1747.552552][ C0] RSP: 002b:00007ffd2e0ad0c0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1747.552555][ C0] RAX: ffffffffffffffda RBX: 000055a39a3f6290 RCX: 00007f42f2bd554e
[ 1747.552557][ C0] RDX: 0000000000000001 RSI: 000055a39a3f6290 RDI: 0000000000000001
[ 1747.552558][ C0] RBP: 00007ffd2e0ad0d0 R08: 0000000000000000 R09: 0000000000000000
[ 1747.552559][ C0] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001
[ 1747.552560][ C0] R13: 000055a39a3bd010 R14: 0000000000000001 R15: 000055a39a3f6290
[ 1747.552571][ C0]
[ 1747.552572][ C0] handlers:
[ 1747.564780][ C0] [] serial8250_interrupt
[ 1747.565085][ C0] Disabling IRQ #52