[Pkg-php-pecl] Bug#842008: php5-apcu: Random SEGFAULT crashing apache

[Alexander Hofstede]

There's been some fixes in later 4.0.x releases. This package would benefit from an update to 4.0.11. https://github.com/krakjoe/apcu/releases/tag/v4.0.11 <https://github.com/krakjoe/apcu/releases/tag/v4.0.11>

On Tue, 25 Oct 2016 09:39:27 +0200 Phillip Berndt <phillip.berndt at googlemail.com> wrote:
> Package: php5-apcu
> Version: 4.0.7-1
> Severity: normal
> 
> Dear Maintainer,
> 
> my apache server SEGFAULT'ed in php's apcu.so module. The crash leaves a
> core dump in /etc/apache2 (which seems to be the default behaviour, I
> didn't configure this). The crash appears to be related to reloading
> apache (systemctl reload apache2.service), which happens automatically
> on the server whenever a letsencrypt certificate has been renewed.v I
> have three core dumps by now, and each one has the same backtrace:
> 
> -- gdb output
> Core was generated by `/usr/sbin/apache2 -k start'.
> Program terminated with signal SIGSEGV, Segmentation fault.
> #0  0x00007f07ccaf174c in __pthread_rwlock_init
> (rwlock=0xffffffffffffffff, attr=<optimized out>) at
> pthread_rwlock_init.c:40
> (gdb) bt
> #0  0x00007f07ccaf174c in __pthread_rwlock_init
> (rwlock=0xffffffffffffffff, attr=<optimized out>) at
> pthread_rwlock_init.c:40
> #1  0x00007f07c2d78b10 in apc_lock_create () from /usr/lib/php5/20131226/apcu.so
> #2  0x00007f07c2d7e4f5 in apc_sma_api_init () from
> /usr/lib/php5/20131226/apcu.so
> #3  0x00007f07c2d7ad51 in ?? () from /usr/lib/php5/20131226/apcu.so
> #4  0x00007f07c817599e in zend_startup_module_ex () from
> /usr/lib/apache2/modules/libphp5.so
> #5  0x00007f07c8182203 in zend_hash_apply () from
> /usr/lib/apache2/modules/libphp5.so
> #6  0x00007f07c8179c2a in zend_startup_modules () from
> /usr/lib/apache2/modules/libphp5.so
> #7  0x00007f07c810fcb3 in php_module_startup () from
> /usr/lib/apache2/modules/libphp5.so
> #8  0x00007f07c8223ee5 in ?? () from /usr/lib/apache2/modules/libphp5.so
> #9  0x00007f07c8224aa3 in ?? () from /usr/lib/apache2/modules/libphp5.so
> #10 0x00007f07cd649eb3 in ap_run_post_config ()
> #11 0x00007f07cd629394 in main ()
> 
> 
> -- Package-specific info:
> (for package libapache2-mod-php5 5.6.26+dfsg-0+deb8u1 because that looks
> much more useful than the output for php5-apcu alone.)
> 
> ==== Additional PHP 5 information ====
> 
> ++++ PHP 5 SAPI (php5query -S): ++++
> apache2
> cli
> 
> ++++ PHP 5 Extensions (php5query -M -v): ++++
> apcu (Enabled for apache2 by maintainer script)
> json (Enabled for apache2 by maintainer script)
> curl (Enabled for apache2 by maintainer script)
> imagick (Enabled for apache2 by maintainer script)
> mysql (Enabled for apache2 by maintainer script)
> mcrypt (Enabled for apache2 by maintainer script)
> pdo_sqlite (Enabled for apache2 by maintainer script)
> gd (Enabled for apache2 by maintainer script)

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