[SVN-2935] mod_dav_svn + Apache/mpm_worker don't play nice

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Won't Fix
• Affects Version/s: 1.4.x
• Fix Version/s: unscheduled
• Component/s: mod_dav_svn

Environment

Linux

• Assignee: Unassigned
• Reporter: Subversion Importer
• Created: 19/Sep/07 16:05
• Updated: 27/Oct/18 16:30
• Resolved: 29/Aug/16 17:29

Description

I have seen reports of this in email, and experienced it myself, but I cannot find any bug report for this in the bug tracking system.

The issue is that with mpm_worker, mod_dav_svn will cause the apache process it is in to core dump. This only happens when the frequency of SVN requests increases (ie. occasional usage does not cause this - however when doing something like a repository diff scan (ie. repeated requests to get all diffs to build a diff database for something like a subversion front-end like FishEye) will trigger it every time).

It has been previously reported here:
http://svn.haxx.se/users/archive-2006-02/1317.shtml

And is also listed as a bug on the apache issue tracker (though it is more likely a mod_dav_svn bug than an apache bug):
http://issues.apache.org/bugzilla/show_bug.cgi?id=42262

The latter link includes a stack trace (Thread 9 is interesting), but unfortunately I did not have subversion compiled with symbols at the time, I will re-run it and attach it here.

Original issue reported by prez