winbindd or kinit uses 100% CPU, stuck in krb5_sendto_kdc
Issue
The winbindd process uses 100% CPU on our servers on occasion.
After a service restart its CPU usage drops, but only temporary.
This problem may also be seen when using kinit
Environment
- Red Hat Enterprise Linux 6.3
- samba-3.6.9-155 and newer
- libtevent-0.9.18 and newer
- krb5-libs package older than 1.10.3-10.el6, Including RHEL5 versions
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