[Bug 1388006] [NEW] Seg fault - free(): invalid pointer

[Andu Aanei]

Public bug reported:

After upgrading to the latest version (php5 5.5.9+dfsg-1ubuntu4.5), PHP throws a seg fault when trying to shutdown.
The issue can be reproduced by running php -v

Output:

PHP Warning:  Module 'zip' already loaded in Unknown on line 0
PHP Warning:  Module 'Zend OPcache' already loaded in Unknown on line 0
PHP Warning:  Zend OPcache: module registration failed! in Unknown on line 0
PHP 5.5.9-1ubuntu4.5 (cli) (built: Oct 29 2014 11:59:10) 
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2014 Zend Technologies
    with Zend OPcache v7.0.3, Copyright (c) 1999-2014, by Zend Technologies
    with Xdebug v2.2.3, Copyright (c) 2002-2013, by Derick Rethans
*** Error in `php': free(): invalid pointer: 0x00007f8fa416db00 ***


Gdb reveals that the seg fault was thrown in the php_module_shutdown() function.

** Affects: php5 (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "Core dump"
   https://bugs.launchpad.net/bugs/1388006/+attachment/4249823/+files/php5core

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Title:
  Seg fault - free(): invalid pointer

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