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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 41126] New: - segmentation faults with mod_jk 1.2.19 & httpd 2.2.3
Date Thu, 07 Dec 2006 16:21:03 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=41126

           Summary: segmentation faults with mod_jk 1.2.19 & httpd 2.2.3
           Product: Tomcat 5
           Version: 5.5.17
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P2
         Component: Connector:AJP
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: neil.hildreth@TLGE.com


i have upgraded httpd from 2.0.55 to 2.2.3 and since this upgrade mod_jk has not
worked.  I have compiled httpd with the following flags.

## httpd configuration

./configure --with-apr=srclib/apr/ --with-apr-util=srclib/apr-util/
--prefix=/usr/local/apache2 --enable-mods-shared=most --enable-ssl
--enable-proxy --enable-proxy-ajp

## Mod_jk configuration
./configure --with-apxs=/usr/local/apache2/bin/apxs

My previous version of Mod_jk worked with 2.0.55 and that was 1.2.14.  There
were no errors in the compilation. I'm running RHEL4 U3 (Linux 2.6.9-34.ELsmp #1
SMP Fri Feb 24 16:54:53 EST 2006 i686 i686 i386 GNU/Linux).

The original mod_jk connector - 1.2.14 - gave 'defunct processes' errors and
Apache(2.2.3) would not start, so mod_jk was upgraded(compiled) to 1.2.19. Now,
Apache will start with 1.2.19, but every attempt at connection results in no
activity at the browser and these three lines appearing in mod_jk.log for every
connection attempt:
do_shm_open::jk_shm.c (252): Shared memory is already open
jk_child_init::mod_jk.c (2400): Attached
shm:/usr/local/apache2/logs/jk-runtime-status
jk_child_init::mod_jk.c (2410): Initialized mod_jk/1.2.19

The Errorlog Below shows what happens with exch request that hist the child
destined for Mod_jk.

[Thu Dec 07 14:47:56 2006] [notice] Apache/2.2.3 (Unix) mod_jk/1.2.19 configured
-- resuming normal operations
[Thu Dec 07 14:48:25 2006] [notice] child pid 6639 exit signal Segmentation
fault (11)
[Thu Dec 07 14:50:39 2006] [notice] caught SIGTERM, shutting down
[Thu Dec 07 14:50:43 2006] [notice] Apache/2.2.3 (Unix) mod_jk/1.2.19 configured
-- resuming normal operations
[Thu Dec 07 14:51:00 2006] [notice] child pid 6668 exit signal Segmentation
fault (11)
[Thu Dec 07 14:59:04 2006] [notice] child pid 6669 exit signal Segmentation
fault (11)
[Thu Dec 07 15:00:17 2006] [notice] child pid 6670 exit signal Segmentation
fault (11)

I have had a colleague compile this on the following O/S Linux cent
2.6.9-42.0.3.EL #1 Fri Oct 6
05:59:54 CDT 2006 i686 i686 i386 GNU/Linux and it works fine with no seg faults
on his O/S and this binary also works on my O/S again with no Seg faults.

If you have any further questions then please let me know

Regards

Neil

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