This (and possibly Bug 1363937) are caused by an uninitialized variable being passed by dm_rename. I have a fix for it.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.