[JIRA] Commented: (SSPCPP-432) module segmentation fault with long URLs

[Scott Cantor (JIRA)]

    [ https://issues.shibboleth.net/jira/browse/SSPCPP-432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13983#comment-13983 ] 

Scott Cantor commented on SSPCPP-432:
-------------------------------------

Looks like more of a log4cpp bug than anything I can probably fix, other than trying to avoid calls that crash. Can you confirm that it doesn't crash if logging isn't on DEBUG?

> module segmentation fault with long URLs
> ----------------------------------------
>
>                 Key: SSPCPP-432
>                 URL: https://issues.shibboleth.net/jira/browse/SSPCPP-432
>             Project: Shibboleth SP - C++
>          Issue Type: Bug
>          Components: Logging
>    Affects Versions: 2.4.3
>         Environment: # uname -a
> Linux oregano.phys.uwm.edu 2.6.32-5-amd64 #1 SMP Thu Mar 22 17:26:33 UTC 2012 x86_64 GNU/Linux
> # dpkg --list | grep shib
> ii  libapache2-mod-shib2                     2.4.3+dfsg-2~bpo60+1         Federated web single sign-on system (Apache module)
> ii  libshibsp-dev                            2.4.3+dfsg-2~bpo60+1         Federated web single sign-on system (development)
> ii  libshibsp5                               2.4.3+dfsg-2~bpo60+1         Federated web single sign-on system (runtime)
> ii  shibboleth-sp2-schemas                   2.4.3+dfsg-2~bpo60+1         Federated web single sign-on system (schemas)
>            Reporter: skoranda at uwm.edu
>            Assignee: Scott Cantor
>         Attachments: gdb.txt, longURL
>
>
> When attempting to access a long (1154 character) URL the Apache httpd child processes segfault. The Apache log contains lines like
> [Wed Mar 28 18:32:39 2012] [notice] child pid 29527 exit signal Segmentation fault (11), possible coredump in /tmp/cores
> This happens even when the URL resource is not being protected using the module and even if no content served by the SP is protected. It is only necessary to have the module loaded, that is for the Apache configuration to contain 
> LoadModule mod_shib /usr/lib/apache2/modules/mod_shib_22.so
> Removing the LoadModule command from the configuration fixes the issue.
> The long URL being access is provided in an attachment as is the output of using gdb to examine the core file.
> The gdb command used was
> thread apply all bt full

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