Can not stop docker container and too much `kworker` process on host

[Yancey0623]

The problem describetion:

• GPU can not be released normally, The Docker Continaer which used GPU can not be stop.
• The command nvidia-smi will be hanged.
• Too high for the system load(3k+).
• Too much kworker process(3k+).

Environment

• OS: CentOS 7.2
• Kernel: 4.4.79-1.el7.elrepo.x86_64
• GPU: P40, Driver: 375.26
• Docker: 1.12
• How to use GPU in Docker: mount nvidia libraries and nvidia device in container.

[typhoonzero]

Thought kubernetes will use --device argument to attach GPU device to the container, and this issue is very possible that has something to do with docker.