autofs, fstab and manual cifs mounts fail if using credentials file
 

I lost my ability to connect to a cifs share from a CentOS
workstation when using a credentials file. I was able to
connect if I typed in the credentials.

After doing some searching, I found the problem has been
acknowledged by Red Hat and it is being worked on. For
now, here is a workaround that adds ctrl-@ at the end of
each line.

You should mark this thread solved.