Red Hat Bugzilla – Bug 205018
trac crashes under FC5
Last modified: 2007-11-30 17:11:41 EST
Description of problem: After FC4 upgrade to FC5 Trac does not work with Apache2 - it exits with following notice in error_log: [notice] child pid 20712 exit signal Segmentation fault (11), possible coredump in /tmp/apache-gdb-dump gdb on core dump shows: Loaded symbols for /usr/lib64/python2.4/lib-dynload/_heapq.so #0 0x00002aaab213013c in PyDict_GetItem () from /usr/lib64/libpython2.4.so.1.0 What I have tried so far: * Reinstalled trac and created new test Trac Environment, which works under tracd, but crashes with apache * Reinstalled httpd and related components completely (with new httpd.conf and conf.d files), but still crashes Last working FC4 environment (FC4->FC5 was done on May 25, could only find so little from my logs): trac.noarch 0.9.5-1.fc4 New crashing FC5 components: trac.noarch 0.9.6-1.fc5 mod_python.x86_64 3.2.8-3 sqlite.x86_64 3.3.3-1.2 httpd.x86_64 2.2.2-1.2 python.x86_64 2.4.3-8.FC5 subversion.x86_64 1.3.2-2.1 Following lines were added/changed in the default http.conf that was created after clean reinstall. * CoreDumpDirectory /tmp/apache-gdb-dump * ServerTokens Prod * ServerName 192.168.1.10:80 * LogLevel debug Trac config files can be found in the attachment along with core dump. Steps to Reproduce: Upgrade from FC4 to FC5 or install named components under FC5. Should have a nice, crashing environment.
Created attachment 135428 [details] httpd.conf, trac.conf, trac.ini, /usr/sbin/httpd core dump
Did some more experiments yesterday and got it running with cgi, fcgi so the problem seems to be in mod_python.
I cannot reproduce the error on my current hardware (x86 arch). Could you try to see if similar problems occur with mod_python directly (not using trac). Maybe we can isolate the problem to mod_python on x86_64 exclusively.
I am closing this ticket; cannot reproduce.
I had this problem on x86/FC5 system. I tracked it down to a conflict with one apache httpd module loaded in httpd.conf: LoadModule mem_cache_module modules/mod_mem_cache.so Disabling that module allows trac to work with mod_python as expected.