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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 46467] New: Apache-childs segfault when number of childs reaches 130
Date Sat, 03 Jan 2009 00:52:44 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=46467

           Summary: Apache-childs segfault when number of childs reaches 130
           Product: Apache httpd-2
           Version: 2.2.11
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: critical
          Priority: P1
         Component: prefork
        AssignedTo: bugs@httpd.apache.org
        ReportedBy: Alexander_Pircher@yahoo.de


Created an attachment (id=23071)
 --> (https://issues.apache.org/bugzilla/attachment.cgi?id=23071)
GNU-Debugger-Output.txt

DESCRIPTION:
The Apache-childs begin to segfault once Apache reaches 130 childs. This can
be reproduced every time by setting MinSpareServers to a value higher than 130.
It has been tested with 2.2.11, 2.2.10 and 2.2.9 which all have the same
behaviour. 2.0.63 is working fine.

The error_log contains:
...
[Sat Jan 03 01:32:34 2009] [notice] child pid 672 exit signal Segmentation
fault (11)
[Sat Jan 03 01:32:34 2009] [notice] child pid 673 exit signal Segmentation
fault (11)
[Sat Jan 03 01:32:34 2009] [notice] child pid 674 exit signal Segmentation
fault (11)
...

Attached is the output of the gdb of one coredump.

CONFIGURATION:
./configure --prefix=/usr/local/bin/httpd --enable-suexec --with-suexec
--enable-mods-shared=all --disable-imagemap

Following lines have been added to httpd.conf:
# ---------------------------------------------
<IfModule prefork.c>
StartServers      32
MinSpareServers  200
MaxSpareServers  400
ServerLimit      1600
MaxClients       1600
MaxRequestsPerChild  4000
</IfModule>

CoreDumpDirectory /tmp
# ---------------------------------------------


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