NFS Locking Problem

I had a few users complain about not being able to start Firefox and other apps from their NFS mounted home directory. I started looking on the server and saw that nlockmgr didn't show up in rpcinfo -p and there were "kernel: lockd: cannot monitor" entries in the logs.

Restarting the nfslock service didn't help.
After digging through with strace, etc and a little searching I figured out that we were hit with this bug:

https://bugzilla.redhat.com/show_bug.cgi?id=453094

The only fix is a reboot.

After the reboot things are back to normal.

Off to patch.