Bug report: Can't parse lock/entries hashfile. Serialized hash missing terminator

[C M Gui <cm...@gmail.com>]

Dear Sir

We got this error "Can't parse lock/entries hashfile /foldername/filename.
 Serialized hash missing terminator" in one of our repositories when trying
to browse or update the repository.    Running svnadmin lslock on the
repository folder on the server also produced the same error message.    To
"fix" the problem, we had to delete the entire /repofolder/locks folder
(couldn't run svnadmin rmlock because it also produced the same error).
 We are using subversion-1.8.1 on a Freebsd 9.1 server (32 bit).    Is
there a bug in Subversion?     We are not aware of any ungraceful server
shutdowns.

Thank you

CM Gui