Received: (qmail 40662 invoked by uid 501); 31 Jul 2000 14:08:48 -0000
Message-Id: <20000731140847.40624.qmail@locus.apache.org>
Date: 31 Jul 2000 14:08:47 -0000
From: George Sanderson <george@xorgate.com>
Reply-To: george@xorgate.com
To: submit@bugz.apache.org
Subject: segmentation fault in ap_remove_module ()
X-Send-Pr-Version: 3.110

>Number:         6352
>Category:       mod_perl
>Synopsis:       segmentation fault in ap_remove_module ()
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    apache
>State:          open
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Mon Jul 31 07:10:02 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     george@xorgate.com
>Release:        1.3.12
>Organization:
apache
>Environment:
Apache 1.3.12 using mod_perl 1.24 as a DSO built with Perl 5.6.0 using Apache::AutoIndex 0.08 running on Linux 2.2.14
>Description:
Everything works fine, until, I `apachectl stop`, then add the following to a
virtural host section in httpd.conf

SetHandler perl-script
PerlModule Apache::AutoIndex
PerlHandler Apache::AutoIndex

then when I do `bin/httpd -X`
Linux does a core dump.  Since I compiled in DEBUG the 'gdb bin/httpd core` reports a segmentation fault with:
#0  0x8054b09 in ap_remove_module ()
==============================================================
Strangeness: If I do a `bin/apachectl restart` instead of the stop, AutoIndex will run OK the first time, but crash on any following restarts.  Also, If I add Apache::Icon to httpd.conf, the first restart results with a gdb responds with a segmentation fault with:
#0  0x2ac92474 in mod_perl_cleanup_av ()from /usr/local/apache/libexec/libperl.so

Somehow the results are timeing related.
I don't understand why Apache/mod_perl has to remove a module when it should be installing it.  Maybe its just a confusing naming convention or something?
Note: I believe I was careful to clean out old versions before the makes.

I did have to 'not use' "large file support" for the Perl 5.6.0 build in order to get mod_perl to launch.

>How-To-Repeat:
You would have to build a simular configuration and try it, because when you try this on a server it crashes.
>Fix:
It probably is a invalid pointer.

I which I was more able to issolate the problem by putting printf s in the source or something.  Any suggestions on this regard?
>Release-Note:
>Audit-Trail:
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