Nico Kadel-Garcia wrote on Fri, May 12, 2017 at 06:22:15 -0400: > On Thu, May 11, 2017 at 12:20 PM, Graham, Jonathan - US > <jonathan.gra...@caci.com> wrote: > > We have recently gone through and done some software updates to our CentOS > > 6.9 server that hosts SVN for us. None of the updates appeared to of > > affected anything for SVN overall, however after these patches occurred we > > started getting org.apache.subversion.javahl.ClientException: E210004: > > Commit failed (details follow): E210004: Malformed network data to occur on > > nearly every commit we have attempted to make to the machine. This also > > caused our machine to completely crash with a kernel panic. After doing some > > digging around and getting core dump files to be generated we were able to > > ascertain that it appears to be something that svnserve is calling that is > > causing this issue. The following is from the core dump file: #0 > > 0x0000003a752eaebb in accept4 (fd=<value optimized out>, addr=..., > > addr_len=0x7ffd6d4e9270, flags=524288) at > > ../sysdeps/unix/sysv/linux/accept4.c:34 34 return INLINE_SYSCALL (accept4, > > 4, fd, addr.__sockaddr__, addr_len, flags); Any thoughts on what is going > > on? I’m new to submitting issues, so what are the next steps I need to > > preform to get this escalated up as currently we are unable to do commits at > > all unless I completely reinstall SVN on the machine, then it will let some > > through before erroring out again. > > If the machine is crashing, you have a serious kernel and/or hardware > issue.
Until you can fix the kernel and/or hardware to stop the panics, you might try switching svnserve from --daemon mode to --inetd mode or --tunnel mode, so that accept(2) will be called not by svnserve but by inetd or sshd. (It's possible that something in how svnserve calls accept(8) tickles a kernel bug, and that sshd / inetd will not tickle that bug.) Also, look at the libapr versions if you haven't already. Try upgrading (or if you had, try downgrading). (libapr abstracts accept(2) for libsvn.)
