[php-maint] Bug#374963: libapache2-mod-php4: segmentation faults in shutdown_memory_manager()

[Steve Langasek]

On Thu, Jun 22, 2006 at 12:53:20PM +0200, Joerg Wendland wrote:
> Package: libapache2-mod-php4
> Version: 4:4.4.2-1+b1
> Severity: important

> Hi PHP maintainers,
> we are seeing segmentation faults on webservers running a PHP4
> application (horde/imp clone). They are reproducible after about
> two hours of server uptime und serving some 50,000 requests and
> appear only under high load. We let apache dump core, the backtrace 
> is identical for each core file so we can assume that we are observing
> only one single kind of failure. We rebuilt libapache2-mod-php4 with 
> full debugging symbols (CFLAGS += -ggdb) to obtain the attached 
> backtrace. Please be aware that packages listed below have custom 
> revision numbers which is because of our release process and does not
> include source changes. I am attaching php.ini as well. Used extensions 
> have following versions:

>   php4-curl     4:4.4.2-1+b1
>   php4-imap     4:5.1.2-1
>   php4-mhash    4:4.4.2-1+b1
>   php4-pgsql    4:4.4.2-1+b1
>   php4-ldap     4:4.4.2-1+b1
>   APC           3.0.8 self compiled
    ^^^

Please test without this apc module loaded and see whether the problem
persists.

-- 
Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
vorlon at debian.org                                   http://www.debian.org/
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