svnserve errors in the system logs

I just discovered tons of spam in /var/log/messages on one of my servers
(Linux RHEL 5.8 with Subversion 1.8.9) :

Sep 17 06:30:41 adc4110305 svnserve: sql_select option missing
Sep 17 06:30:41 adc4110305 svnserve: auxpropfunc error no mechanism
available
Sep 17 06:30:41 adc4110305 svnserve: auxpropfunc error invalid parameter
supplied

This error pops up everytime someone accesses a repository via svn+ssh.
It doesn't seem to hinder functionality. I can reproduce this simply by
running "ssh adc4110305 svnserve -t" (the error pops up before I can
type anything).

 From what I have gathered from my internet searches, it sounds like
Cyrus SASL is getting involved. Though I don't understand why, as I
thought the tunnel mode was supposed to use the pre-authenticated
username. I tried messing with /etc/sasl2/svn.conf but only managed to
make it worse. One person suggested (on this very mailing list 5 years
ago) removing the relevant cyrus-sasl packages, but that doesn't seem
like a good idea. What's the correct way of fixing this?

I should note that I built Subversion myself, so if I need to rebuild
with some different config options to disable this behavior, I can do so.

++thanks,
trent...
Received on 2014-09-17 16:14:50 CEST