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Bug #36668 access violations, about 1 percent of requests fail
Submitted: 2006-03-09 14:36 UTC Modified: 2006-04-26 08:49 UTC
From: s dot heinlein at phoenix-ag dot de Assigned:
Status: Not a bug Package: IIS related
PHP Version: 5.1.2 OS: Windows 2003 Server
Private report: No CVE-ID: None
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From: s dot heinlein at phoenix-ag dot de
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 [2006-03-09 14:36 UTC] s dot heinlein at phoenix-ag dot de 
Description:
------------
With any version since 5.02 of PHP we see rare cases of access violations with changing adresses where requests are not answered. Actually we use PHP 5.1.2 with no extensions/modules installed.
Only PEAR SOAP 0.9.2 is used for communication with our host DB.

The problems have been observed with Windows Server 2003 with and without SP1 and all patches.

PHP is running as an ISAPI process.



Reproduce code:
---------------
The problem can also be seen while processing the following code from dummy.php: <html><body></body></html>
Even with that simple fragment, requests are not processed properly in rare cases and an access violation occurs.

Expected result:
----------------
We expected not to see the described error with that dummy.php.

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 [2006-03-09 14:50 UTC] tony2001@php.net 
We are aware of PHP's problems with stability under IIS and are working 
to rectify the problem. Unfortunatly your bug report does not contain any
extra useful information and we already have enough bug reports open about
this issue. If you can provide more detailed information such as a 
reproducable crash or a backtrace please do so and reopen this bug. 
Otherwise please keep trying new releases as we are working to resolve 
the problems on this platform
 
Thanks for your interest in PHP.
 [2006-03-09 14:50 UTC] derick@php.net 
Not enough information was provided for us to be able
to handle this bug. Please re-read the instructions at
http://bugs.php.net/how-to-report.php

If you can provide more information, feel free to add it
to this bug and change the status back to "Open".

Thank you for your interest in PHP.
 [2006-03-17 01:00 UTC] php-bugs at lists dot php dot net 
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 [2006-04-26 08:42 UTC] s dot heinlein at phoenix-ag dot de 
We found out, that the situation disappears when HyperThreading is deactivated.
 [2006-04-26 08:49 UTC] tony2001@php.net 
Thanks for the info.
Now it's clearly not PHP problem.
 
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