[    0.578658] 00:04: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[   10.128036] random: nonblocking pool is initialized
[   36.052003] BUG: soft lockup - CPU#1 stuck for 22s! [swapper/0:1]
[   36.052003] Modules linked in:
[   36.052003] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 3.16.0-37-generic #51-Ubuntu
[   36.052003] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.8.1-20150422_083828-anatol 04/01/2014
[   36.052003] task: ffff8800a96b8000 ti: ffff8800a9684000 task.ti: ffff8800a9684000
[   36.052003] RIP: e030:[<ffffffff814666bd>]  [<ffffffff814666bd>] virtqueue_is_broken+0xd/0x10
[   36.052003] RSP: e02b:ffff8800a9687cb8  EFLAGS: 00000246
[   36.052003] RAX: 0000000000000000 RBX: ffff8800a77044c8 RCX: ffff8800a7711000
[   36.052003] RDX: ffff8800a9687ccc RSI: ffff8800a9687ccc RDI: ffff8800a76cb400
[   36.052003] RBP: ffff8800a9687cb8 R08: ffff8800a7710000 R09: ffff8800a7710000
[   36.052003] R10: 0000000000000000 R11: 0000000000016838 R12: ffff8800a76cb400
[   36.052003] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   36.052003] FS:  0000000000000000(0000) GS:ffff8800b1c80000(0000) knlGS:0000000000000000
[   36.052003] CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
[   36.052003] CR2: 0000000000000000 CR3: 0000000001c12000 CR4: 0000000000040660
[   36.052003] Stack:
[   36.052003]  ffff8800a9687d08 ffffffff814b8888 ffff8800a9687d08 00010000ffffffff
[   36.052003]  ffffea0002a5a1c2 0000000800000cd0 0000000000000000 0000000000000000
[   36.052003]  ffff8800a7704480 ffff8800a768c000 ffff8800a9687d48 ffffffff814ba403
[   36.052003] Call Trace:
[   36.052003]  [<ffffffff814b8888>] __send_control_msg+0xa8/0xd0
[   36.052003]  [<ffffffff814ba403>] virtcons_probe+0x133/0x300
[   36.052003]  [<ffffffff81468b80>] ? vp_interrupt+0x60/0x60
[   36.052003]  [<ffffffff81466229>] virtio_dev_probe+0xe9/0x160
[   36.052003]  [<ffffffff814d3c83>] driver_probe_device+0xa3/0x410
[   36.052003]  [<ffffffff814d40bb>] __driver_attach+0x8b/0x90
[   36.052003]  [<ffffffff814d4030>] ? __device_attach+0x40/0x40
[   36.052003]  [<ffffffff814d1afb>] bus_for_each_dev+0x6b/0xb0
[   36.052003]  [<ffffffff814d370e>] driver_attach+0x1e/0x20
[   36.052003]  [<ffffffff814d3310>] bus_add_driver+0x180/0x250
[   36.052003]  [<ffffffff81d8d900>] ? misc_init+0xb0/0xb0
[   36.052003]  [<ffffffff814d4894>] driver_register+0x64/0xf0
[   36.052003]  [<ffffffff814665d0>] register_virtio_driver+0x20/0x40
[   36.052003]  [<ffffffff81d8d9a3>] init+0xa3/0x112
[   36.052003]  [<ffffffff81002148>] do_one_initcall+0xd8/0x210
[   36.052003]  [<ffffffff81092c7d>] ? parse_args+0x21d/0x4e0
[   36.052003]  [<ffffffff81d4311d>] kernel_init_freeable+0x190/0x218
[   36.052003]  [<ffffffff81777e10>] ? rest_init+0x80/0x80
[   36.052003]  [<ffffffff81777e1e>] kernel_init+0xe/0xf0
[   36.052003]  [<ffffffff8178c958>] ret_from_fork+0x58/0x90
[   36.052003]  [<ffffffff81777e10>] ? rest_init+0x80/0x80
[   36.052003] Code: 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 8b 47 38 48 89 e5 5d c3 66 90 0f 1f 44 00 00 55 0f b6 47 59 48 89 e5 <5d> c3 90 0f 1f 44 00 00 55 48 8b 87 d8 02 00 00 48 81 c7 d8 02