Docker throwing FATA[0000] Error response from daemon

Docker Engine General
1

I have installed docker on centos 6.6 after starting docker as a service and pulling centos image

[root@ 17:43 ~]$docker images
REPOSITORY    TAG     IMAGE ID      CREATED      VIRTUAL SIZE
centos        6       f6808a3e4d9e  13 days ago  215.7 MB
centos        latest  88f9454e60dd  13 days ago  223.9 MB code here

and then I tried to start a container

docker run centos:6 echo "ff"
FATA[0000] Error response from daemon: Cannot start container 7a65630de2390c17d254b8c229c87f42ba81aa5b90f48b553e758ed7b0610f57: write /cgroup/cpu/docker/7a65630de2390c17d254b8c229c87f42ba81aa5b90f48b553e758ed7b0610f57/cgroup.procs: invalid argument

any idea why I am getting this error