Edit report at https://bugs.php.net/bug.php?id=53140&edit=1
ID: 53140
Comment by: johnphayes at gmail dot com
Reported by: jeyb88 at gmail dot com
Summary: PHP-CGI (FastCGI IIS) crashes when creating DOTNET
instance every second time
Status: Open
Type: Bug
Package: COM related
Operating System: XP, Vista, Win 7,Win Server 2008
PHP Version: 5.3.3
Block user comment: N
Private report: N
New Comment:
Can this bug's summary be edited to remove "(FastCGI IIS)?" My comment above
shows
that it can be reproduced under Apache as an Apache handler as well.
Previous Comments:
------------------------------------------------------------------------
[2011-08-24 16:18:58] johnphayes at gmail dot com
This error only appears to happen when the offending code is run from a web
server. If I run the offending code directly from the CLI, php never crashes.
If
I run the same code through Apache (via a cURL request), Apache crashes every
other time. My configuration is:
* Windows Server 2003 R2
* Apache 2.2
* PHP 5.3 configured as an Apache handler, not under FastCGI (see
http://www.php.net/manual/en/install.windows.apache2.php)
* The following 2 files:
----------
<?php
// testCrash.php - file #1
$stack = new DOTNET("mscorlib", "System.Collections.Stack");
echo "success";
?>
----------
<?php
// testCrashClient.php - file #2
$endPoint = 'http://localhost/testCrash.php';
$client = curl_init();
curl_setopt_array($client, array(
CURLOPT_FRESH_CONNECT => TRUE,
CURLOPT_RETURNTRANSFER => TRUE,
CURLOPT_URL => $endPoint
));
$response = curl_exec($client);
curl_close($client);
var_dump($response);
echo 'done';
?>
----------
Use case #1 - run locally, we get no crash:
Steps:
1. Open command prompt
2. Execute:
php.exe testCrash.php
3. Observe that we get the expected resulting output:
success
4. Repeat step 2. Expected result will always be obtained.
Use case #2 - run through the web server, we get the crash:
Steps:
1. Open command prompt
2. Execute:
php.exe testCrashClient.php
3. Observe that we get the expected resulting output:
string(7) "success"
done
4. Repeat step 2.
5. Now observe that we get an error:
bool(false)
done
6. Repeat step 2.
7. Expected successful output is obtained again.
Repeating step 2 will cause the crash every other time. When the crash occurs,
apache's error log gets:
----------
[Wed Aug 24 12:13:25 2011] [notice] Parent: child process exited with status 0 -
- Restarting.
[Wed Aug 24 12:13:25 2011] [notice] Apache/2.2.19 (Win32) PHP/5.2.17 configured
-- resuming normal operations
[Wed Aug 24 12:13:25 2011] [notice] Server built: May 20 2011 17:39:35
[Wed Aug 24 12:13:25 2011] [notice] Parent: Created child process 2624
[Wed Aug 24 12:13:26 2011] [notice] Child 2624: Child process is running
[Wed Aug 24 12:13:26 2011] [notice] Child 2624: Acquired the start mutex.
[Wed Aug 24 12:13:26 2011] [notice] Child 2624: Starting 64 worker threads.
[Wed Aug 24 12:13:26 2011] [notice] Child 2624: Starting thread to listen on
port 80.
----------
------------------------------------------------------------------------
[2010-11-16 23:40:13] davidphp at limegreensocks dot com
It appears this behavior was intentionally introduced by WEZ back in 2003.
http://svn.php.net/viewvc/php/php-src/trunk/ext/com_dotnet/com_dotnet.c?r1=137794&r2=146718
I don't know what problem he was trying to fix back then, so I'm not sure of
the implications of adding these two lines back. But if you are using fastcgi,
then jeyb88 is absolutely correct: this will crash every other time the code is
run.
My repro is even simpler than jeyb88's. I don't even have to call any methods
on the .net object. I have a 1 line php file that calls the "new" against my
.net class:
<?php
$class1 = new DOTNET("moo, Version=1.0.0.0, Culture=neutral,
PublicKeyToken=14ba337483520f7a", "moo.Impersonation");
?>
The constructor for my .net class is empty:
[ComVisible(true),
ClassInterface(ClassInterfaceType.None),
Guid("53C74B01-EC09-45a4-A741-42727858B2A1")]
public class Impersonation
{
public Impersonation()
{
}
// more code follows
When I first browse to the page, it (correctly) shows nothing. Then I hit
refresh, and I get the "FastCGI process exited unexpectedly" 0xc0000005. If I
hit refresh again, the page again (correctly) shows nothing, next time, fastcgi
AVs again.
I am using php 5.3.3, Windows Server 2003, and I have tried both .Net 2.0 and
.Net 3.5.
The pattern here is easily reproducible, causes an unrecoverable access
violation, and there is no workaround. A fix here would be greatly appreciated.
------------------------------------------------------------------------
[2010-10-22 15:59:15] jeyb88 at gmail dot com
Description:
------------
The php-cgi.exe will crash after every second refresh when I make an instance
of the DOTNET class. The Website is hostet via IIS 7 and PHP is configured as
FastCGI module. When I configure PHP on IIS as CGI module everything works
fine, but I can not do without FastCGI. I have made a change in the
com_dotnet.c file in function php_com_dotnet_rshutdown. The variable called
stuff from type dotnet_runtime_stuff will not be released like in the function
php_com_dotnet_mshutdown. So I have added this two lines to the function
php_com_dotnet_rshutdown:
free(stuff);
COMG(dotnet_runtime_stuff) = NULL;
After that I have compiled PHP 5.3.3 with Visual Studio 2008 (VC9) x86 with
almost the same configuration like in the PHP 5.3.3 nts version but without
zlib:
configure "--enable-snapshot-build" "--enable-debug-pack" "--disable-zts"
"--disable-isapi" "--disable-nsapi" "--without-mssql" "--without-pdo-mssql"
"--without-pi3web" "--with-pdo-oci" "--with-oci8" "--with-oci8-11g"
"--with-enchant=shared" "--enable-object-out-dir=../obj/" "--enable-com-dotnet"
"--with-mcrypt=static" "--disable-zlib"
The include and lib files are relative to the configuration file (in the deps
folder). I have earned following error and that's why I have disabled zlib:
php5.dll.def : error LNK2001: unresolved external symbol compressBound
php5.dll.def : error LNK2001: unresolved external symbol deflateBound
php5.dll.def : error LNK2001: unresolved external symbol deflatePrime
php5.dll.def : error LNK2001: unresolved external symbol gzclearerr
php5.dll.def : error LNK2001: unresolved external symbol gzungetc
php5.dll.def : error LNK2001: unresolved external symbol inflateBack
php5.dll.def : error LNK2001: unresolved external symbol inflateBackEnd
php5.dll.def : error LNK2001: unresolved external symbol inflateBackInit_
php5.dll.def : error LNK2001: unresolved external symbol inflateCopy
php5.dll.def : error LNK2001: unresolved external symbol zlibCompileFlags
The error in the com_dotnet.c file was the error, because now with the new
compiled version, fastcgi will not be terminated. Is the zlib extension
necessary for complex php websites like Joomla? Because now the compiled php
version can interpret the sample shown below and it can interpret simple php
scripts, but when I try to load a Joomla site, the FastCGI will crash. What is
wrong with the made configuration? Can you give me an important hint of how to
compile php5.3.3 like in the original php version?
Best regards, JeyB
Test script:
---------------
<?php
try
{
$stack = new DOTNET("mscorlib", "System.Collections.Stack");
$stack->Push(".Net");
$stack->Push("Hello ");
echo $stack->Pop() . $stack->Pop();
}
catch(Exception $lEx)
{
echo "Error occurred:<br>".$lEx->getMessage();
}
?>
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=53140&edit=1
