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Bug #44198 Apache 1.3.41 Child processed exited prematurely.
Submitted: 2008-02-21 07:44 UTC Modified: 2008-03-09 03:21 UTC
From: jean at upbear dot com Assigned:
Status: Closed Package: Reproducible crash
PHP Version: 4.4.8 OS: win32 FreeBSD
Private report: No CVE-ID: None
View Developer Edit
 [2008-02-21 07:44 UTC] jean at upbear dot com 
Description:
------------
PHP Script crash apache child process

Originaly on FreeBDS virtual hosting and reproductible under winxp with apache 1.3.30 and 1.3.41 with windows version of PHP 4.4.8

Reproduce code:
---------------
unable to localize code or any specific line of code/instruction - no win32 backtrace available

Expected result:
----------------
Under FreeBSD PHP 4.4.3 (virtual hosting or not) the script is running completely and producing web pages.


Actual result:
--------------
web page with Zero byte return from Apache http request

cause :

[Thu Feb 21 02:22:00 2008] [info] master_main: Child processed exited prematurely. Restarting the child process.
[Thu Feb 21 02:22:00 2008] [info] Parent: Created child process 2176
[Thu Feb 21 02:22:00 2008] [info] Parent: Duplicating socket 156 and sending it to child process 2176
[Thu Feb 21 02:22:00 2008] [info] BytesRead = 372 WSAProtocolInfo = 2006620

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 [2008-02-21 14:25 UTC] jean at upbear dot com 
typo : reproduction were under winxp apache version 1.3.39 (same as ISP) and apapche 1.3.41 (newess version available in the 1.3 branch).

Note : ISP in under FreeBDS virtual hosting
 [2008-03-09 03:21 UTC] jean at upbear dot com 
Strange Strange Strange ...

After refactoring the application and played a bit with class definition  and code weaving, I got execution traces and error message related to the call of the function preg_match_all.  Preg_match_all was call with a variable non declared as array, I did and things were going back.

So to "solve" this, I had to rework code and declaration of code, to get error messages and then fix the code.

Strange indeed !

after fix, code worked in both environment
 
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