[  245.802487] INFO: task jbd2/vda-8:736 blocked for more than 120 seconds.
[  245.901380]       Not tainted 4.4.0-rc5+ #88
[  245.966300] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  246.082297] jbd2/vda-8      D ffff800000086c[  700.294882] kvm_timer_should_fire cval: 34581442b now: 3458f0fd8
80     0   736      2 0x00000000
[  246.194712] Call trace:
[  246.232447] [<ffff800000086c80>] __switch_to+0xa4/0xb0
[  246.308412] [<ffff80000064cc70>] __schedule+0x1b8/0x590
[  246.386303] [<ffff80000064d08c>] schedule+0x44/0xa8
[  246.459056] [<ffff80000064fb88>] schedule_timeout+0x158/0x1a8
[  246.545050] [<ffff80000064ca3c>] io_schedule_timeout+0xac/0x128
[  246.632335] [<ffff80000064d944>] bit_wait_io+0x14/0x68
[  246.706965] [[  700.877997] kvm_timer_should_fire cval: 3473bc56b now: 3474bf1e2
<ffff80000064d5b0>] __wait_on_bit+0xa4/0xd8
[  246.788942] [<ffff80000064d64c>] out_of_line_wait_on_bit+0x68/0x74
[  246.882649] [<ffff8000001ce1d8>] __wait_on_buffer+0x24/0x2c
[  246.966600] [<ffff800000260964>] jbd2_write_superblock+0xec/0x184
[  247.057047] [<ffff800000260a38>] jbd2_journal_update_sb_log_tail+0x3c/0xa0
[  247.156578] [<ffff80000025c098>] jbd2_journal_commit_transaction+0x114c/0x1410
[  247.263950] [<ffff80000025f594>] k[  701.460039] kvm_timer_should_fire cval: 348e3f72c now: 3490801b8
journald2+0xd8/0x260
[  247.340782] [<ffff8000000cff48>] kthread+0xe0/0xf4
[  247.413138] [<ffff800000085c50>] ret_from_fork+0x10/0x40