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From bugzi...@apache.org
Subject [Bug 53609] Apache hangs with terminated signal 6
Date Mon, 30 Jul 2012 16:31:52 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=53609

--- Comment #12 from vinoth <talk2.vino@gmail.com> ---
We see those error "key not in ancestor pool of t"  in the attached Error logs

===============
[Fri Jul 27 21:36:59.029498 2012] [core:notice] [pid 449:tid 47538503809680]
AH00094: Command line: '/usr/local/apache2/bin/httpd'
apr_table_mergen: key not in ancestor pool of t
[Fri Jul 27 22:29:38.067056 2012] [core:notice] [pid 449:tid 47538503809680]
AH00051: child pid 1083 exit signal Aborted (6), possible coredump in
/piroot/apache2-gdb-dump
apr_table_mergen: key not in ancestor pool of t
[Fri Jul 27 22:50:13.089987 2012] [core:notice] [pid 449:tid 47538503809680]
AH00051: child pid 23412 exit signal Aborted (6), possible coredump in
/piroot/apache2-gdb-dump
apr_table_addn: val not in ancestor pool of t
[Fri Jul 27 22:50:22.091015 2012] [core:notice] [pid 449:tid 47538503809680]
AH00051: child pid 32280 exit signal Aborted (6), possible coredump in
/piroot/apache2-gdb-dump
*** glibc detected *** /usr/local/apache2/bin/httpd: double free or corruption
(!prev): 0x00002aab90008b30 ***
*** glibc detected *** /usr/local/apache2/bin/httpd: double free or corruption
(!prev): 0x00002aab90008b30 ***
*** glibc detected *** /usr/local/apache2/bin/httpd: double free or corruption
(!prev): 0x00002aab90008b30 ***
*** glibc detected *** /usr/local/apache2/bin/httpd: double free or corruption
(!prev): 0x00002aab90008b30 ***
*** glibc detected *** /usr/local/apache2/bin/httpd: double free or corruption
(!prev): 0x00002aab90008b30 ***
*** glibc detected *** /usr/local/apache2/bin/httpd: double free or corruption
(!prev): 0x00002aab90008b30 ***
[Fri Jul 27 22:50:33.091944 2012] [core:notice] [pid 449:tid 47538503809680]
AH00051: child pid 32614 exit signal Segmentation fault (11), possible coredump
in /piroot/apache2-gdb-dump
apr_table_addn: val not in ancestor pool of t
[Fri Jul 27 22:50:54.093086 2012] [core:notice] [pid 449:tid 47538503809680]
AH00051: child pid 525 exit signal Aborted (6), possible coredump in
/piroot/apache2-gdb-dump
apr_table_mergen: key not in ancestor pool of t
[Fri Jul 27 23:19:04.121667 2012] [core:notice] [pid 449:tid 47538503809680]
AH00051: child pid 959 exit signal Aborted (6), possible coredump in
/piroot/apache2-gdb-dump
apr_table_addn: val not in ancestor pool of t
[Fri Jul 27 23:35:08.139140 2012] [core:notice] [pid 449:tid 47538503809680]
AH00051: child pid 13036 exit signal Aborted (6), possible coredump in
/piroot/apache2-gdb-dump

===============

Today we tried out the prefork mpm for the test instead of worker mpm. In that
we dont see any aborts and seg faults in the test and also the error "key not
in ancestor pool of t".

Is there is anything associated with the issue in worker mpm.

When we hit with the issue while in worker mpm the backtrace always say
something that releated to worker.c file

Is there any other information that you need from my side.

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