Bug #70652 [Fbk->Opn]: Invalid memory access - Unable to reattach to base address

From: Date: Thu, 08 Oct 2015 08:17:48 +0000
Subject: Bug #70652 [Fbk->Opn]: Invalid memory access - Unable to reattach to base address
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-196501@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=70652&edit=1

 ID:                 70652
 User updated by:    maly at myq dot cz
 Reported by:        maly at myq dot cz
 Summary:            Invalid memory access - Unable to reattach to base
                     address
-Status:             Feedback
+Status:             Open
 Type:               Bug
 Package:            opcache
 Operating System:   Windows 10
 PHP Version:        5.6.14
 Block user comment: N
 Private report:     N

 New Comment:

I have tried to reproduce this bug in snapshot r07a8e5c (I am unable to download later snapshot) and
the bug persists. 

Additional info:
I use non-threadsafe version of PHP (as expected with using mod_fcgid plugin).


Previous Comments:
------------------------------------------------------------------------
[2015-10-07 13:23:41] ab@php.net

Thanks for the report. Could you please check some latest 5.6 snapshot? http://windows.php.net/downloads/snaps/php-5.6/


Thanks.

------------------------------------------------------------------------
[2015-10-06 15:15:50] maly at myq dot cz

Description:
------------
The opcache accesses to invalid address. PHP is running via Apache using mod_fcgid. Php.ini does not
contain any plugins (except opcache). 

Eventlog message:

The description for Event ID 487 from source Zend OPcache cannot be found. Either the component that
raises this event is not installed on your local computer or the installation is corrupted. You can
install or repair the component on the local computer.

If the event originated on another computer, the display information had to be saved with the event.

The following information was included with the event: 

Unable to reattach to base address
Pokus o přístup k nepřípustné adrese. (translation: A try to access to invalid
address)

I have run the attached test script using utility ab.exe:

ab.exe -n 50 -c 3 http://myip/attachedscript.php

This bug is observed in versions 5.6.11-14. Version 5.6.10 seems to work correctly.










Test script:
---------------
<?php
$sec = 3;
echo "waiting $sec s...";

for($i=0; $i < $sec; ++$i) {
	sleep(1);
}

echo "end<br>";
echo "The script has waited for $sec sec";





------------------------------------------------------------------------



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Edit this bug report at https://bugs.php.net/bug.php?id=70652&edit=1

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