"kernel BUG at kernel/cgroup.c:895" が原因でシステムクラッシュが発生する

Issue

• kernel BUG at kernel/cgroup.c:895

• cgroup_diput() の BUG_ON(!(cgroup_is_removed(cgrp))) アサーションが原因で、システムクラッシュが発生します。

  kernel BUG at kernel/cgroup.c:895!
  invalid opcode: 0000 [#1] SMP 
  ... skipped ...
  CPU: 12 PID: 42483 Comm: kworker/12:0 Tainted: P           OE  ------------   3.10.0-514.21.1.el7.x86_64 #1
  Hardware name: XXX
  Workqueue: cgroup_destroy css_dput_fn
  task: ffff8814bb3b2f10 ti: ffff88177cb84000 task.ti: ffff88177cb84000
  RIP: 0010:[<ffffffff8110c740>]  [<ffffffff8110c740>] cgroup_diput+0xc0/0xf0
  ... skipped ...
  Call Trace:
  [<ffffffff81215b46>] dentry_kill+0x146/0x1b0
  [<ffffffff81215c0c>] dput+0x5c/0xd0
  [<ffffffff8110a90c>] cgroup_dput.isra.21+0x1c/0x30
  [<ffffffff8110a93d>] css_dput_fn+0x1d/0x20
  [<ffffffff810a845b>] process_one_work+0x17b/0x470
  [<ffffffff810a9296>] worker_thread+0x126/0x410
  [<ffffffff810a9170>] ? rescuer_thread+0x460/0x460
  [<ffffffff810b0a4f>] kthread+0xcf/0xe0
  [<ffffffff810b0980>] ? kthread_create_on_node+0x140/0x140
  [<ffffffff81697418>] ret_from_fork+0x58/0x90
  [<ffffffff810b0980>] ? kthread_create_on_node+0x140/0x140
  Code: 41 5e 41 5f 5d c3 0f 1f 44 00 00 48 8b 7f 78 48 8b 07 a8 01 74 15 48 81 c7 38 01 00 00 48 c7 c6 60 97 10 81 e8 62 c8 02 00 eb c8 <0f> 0b 49 8b 4e 18 48 c7 c2 fe 91 8d 81 be 87 03 00 00 48 c7 c7 
  RIP  [<ffffffff8110c740>] cgroup_diput+0xc0/0xf0
  RSP <ffff88177cb87d78>