#47930 [Asn]: ext/filter crashes when module startup bails out

ID: 47930 Updated by: pajoye@php.net Reported By: stas at zend dot com Status: Assigned Bug Type: Reproducible crash Operating System: * PHP Version: 5.2CVS-2009-04-29 -Assigned To: derick +Assigned To: stas New Comment: Any reason why this change has been commited to HEAD but never to 5.3, or has it been reverted? Please clarify the situation and sync both branches as soon as possible. Previous Comments: ------------------------------------------------------------------------ [2009-04-29 00:41:24] stas@php.net fixed for 5.3/HEAD, 5.2 fix still required, since 5.3+ fix changes binary API ------------------------------------------------------------------------ [2009-04-08 23:01:04] stas at zend dot com Description: ------------ 1. If one of the modules startup bails out, that leads to aborting the startup sequence and PG(modules_activated) be 0. This, in turn, precludes running RSHUTDOWN functions on modules. 2. ext/filter allocates IF_G(get_array), etc. in the course of the request startup, and if RSHUTDOWN is not called, they are not cleaned up. 3. Since ext/filter does not initialize IF_G arrays, on the next request uncleaned value will be used. Since these arrays are no longer pointing to a valid memory (which was cleaned on the end of the previous request), this will result in a crash. Reproduce code: --------------- 1. Create extension that uses zend_bailout in RINIT. 2. Run two requests while ext/filter is present and turned on 3. Crash! ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=47930&edit=1