Edit report at http://bugs.php.net/bug.php?id=40479&edit=1

 ID:                 40479
 Updated by:         fel...@php.net
 Reported by:        rrossi at maggioli dot it
 Summary:            zend_mm_heap corrupted
-Status:             No Feedback
+Status:             Feedback
 Type:               Bug
 Package:            Reproducible crash
 Operating System:   Suse Linux 9.0
 PHP Version:        5.2.1
 Block user comment: N

 New Comment:

Thank you for this bug report. To properly diagnose the problem, we
need a short but complete example script to be able to reproduce
this bug ourselves. 

A proper reproducing script starts with <?php and ends with ?>,
is max. 10-20 lines long and does not require any external 
resources such as databases, etc. If the script requires a 
database to demonstrate the issue, please make sure it creates 
all necessary tables, stored procedures etc.

Please avoid embedding huge scripts into the report.




Previous Comments:
------------------------------------------------------------------------
[2010-09-16 13:23:05] michael202 at gmx dot de

The problem is still in 5.3.3 on Suse 11.2, but it is not reproducible
:-(

Sometimes it is twice a day sometimes every few days.



Apache starts giving these messages:

"child pid xxxxx exit signal Segmentation fault (11)"

And if your are lucky, the scripts still return xml-results.

If you get a no result from the script (i.a. white page in browser),

you'll need a apache stop and start (graceful does not help)

and the error_log says:

"seg fault or similar nasty error detected in the parent process"

------------------------------------------------------------------------
[2010-08-09 10:32:10] sht dot alien at gmx dot net

I had it coming when I started my unittests. But it happened out of
nowhere ^^

Wehen I set USE_ZEND_ALLOC=0 it didn't go away, but instead I got a
debug backtrace (as seen below). But I came up with a solution:
ZendDebugger was the root of all evil. I'll check out if there's a newer
version available...



FAILURES!

Tests: 284, Assertions: 1911, Errors: 4, Incomplete: 10, Skipped: 9.

*** glibc detected *** /usr/local/zend/bin/php: free(): invalid pointer:
0x00000000035b5a8f ***

======= Backtrace: =========

/lib/libc.so.6(+0x775b6)[0x7f56f13105b6]

/lib/libc.so.6(cfree+0x73)[0x7f56f1316e53]

/usr/local/zend/bin/php(zend_hash_destroy+0x7b)[0x656b7b]

/usr/local/zend/bin/php(destroy_zend_class+0x55)[0x641845]

/usr/local/zend/bin/php[0x656822]

/usr/local/zend/bin/php(zend_hash_reverse_apply+0x59)[0x656929]

/usr/local/zend/bin/php[0x63e486]

/usr/local/zend/bin/php[0x64a8b2]

/usr/local/zend/bin/php(php_request_shutdown+0x1ae)[0x5f9cce]

/usr/local/zend/bin/php[0x6d2be4]

/lib/libc.so.6(__libc_start_main+0xfd)[0x7f56f12b7c4d]

/usr/local/zend/bin/php[0x45ffaa]

======= Memory map: ========

00400000-009d8000 r-xp 00000000 08:01 12588460                          
/usr/local/zend/bin/php

00ad8000-00b5f000 rwxp 005d8000 08:01 12588460                          
/usr/local/zend/bin/php

00b5f000-00b7f000 rwxp 00000000 00:00 0 

02b4e000-04999000 rwxp 00000000 00:00 0                                 
[heap]

7f56e0000000-7f56e0021000 rwxp 00000000 00:00 0 

7f56e0021000-7f56e4000000 ---p 00000000 00:00 0 

7f56e5309000-7f56e530e000 r-xp 00000000 08:01 15842                     
/lib/libnss_dns-2.11.1.so

7f56e530e000-7f56e550d000 ---p 00005000 08:01 15842                     
/lib/libnss_dns-2.11.1.so

7f56e550d000-7f56e550e000 r-xp 00004000 08:01 15842                     
/lib/libnss_dns-2.11.1.so

7f56e550e000-7f56e550f000 rwxp 00005000 08:01 15842                     
/lib/libnss_dns-2.11.1.so

7f56e550f000-7f56e5511000 r-xp 00000000 08:01 41397                     
/lib/libnss_mdns4_minimal.so.2

7f56e5511000-7f56e5710000 ---p 00002000 08:01 41397                     
/lib/libnss_mdns4_minimal.so.2

7f56e5710000-7f56e5711000 r-xp 00001000 08:01 41397                     
/lib/libnss_mdns4_minimal.so.2

7f56e5711000-7f56e5712000 rwxp 00002000 08:01 41397                     
/lib/libnss_mdns4_minimal.so.2

7f56e5712000-7f56e5714000 rwxp 00000000 00:00 0 

7f56e5794000-7f56e58f7000 r-xp 00000000 08:01 12582939                  
/usr/local/zend/lib/debugger/php-5.3.x/ZendDebugger.so

7f56e58f7000-7f56e59f7000 ---p 00163000 08:01 12582939                  
/usr/local/zend/lib/debugger/php-5.3.x/ZendDebugger.so

7f56e59f7000-7f56e5a21000 rwxp 00163000 08:01 12582939                  
/usr/local/zend/lib/debugger/php-5.3.x/ZendDebugger.so

7f56e5a21000-7f56e5a27000 rwxp 00000000 00:00 0 

7f56e5a27000-7f56e5a69000 r-xp 00000000 08:01 12583569                  
/usr/local/zend/lib/optimizerplus/php-5.3.x/ZendOptimizerPlus.so

7f56e5a69000-7f56e5b69000 ---p 00042000 08:01 12583569                  
/usr/local/zend/lib/optimizerplus/php-5.3.x/ZendOptimizerPlus.so

7f56e5b69000-7f56e5b6b000 rwxp 00042000 08:01 12583569                  
/usr/local/zend/lib/optimizerplus/php-5.3.x/ZendOptimizerPlus.so

7f56e5b6b000-7f56e5b76000 rwxp 00000000 00:00 0 

7f56e5b76000-7f56e5cd3000 r-xp 00000000 08:01 12583576                  
/usr/local/zend/lib/utils/php-5.3.x/ZendUtils.so

7f56e5cd3000-7f56e5dd3000 ---p 0015d000 08:01 12583576                  
/usr/local/zend/lib/utils/php-5.3.x/ZendUtils.so

7f56e5dd3000-7f56e5ddb000 rwxp 0015d000 08:01 12583576                  
/usr/local/zend/lib/utils/php-5.3.x/ZendUtils.so

7f56e5ddb000-7f56e5dde000 rwxp 00000000 00:00 0 

7f56e5dde000-7f56e5f50000 r-xp 00000000 08:01 12583528                  
/usr/local/zend/lib/datacache/php-5.3.x/ZendDataCache.so

7f56e5f50000-7f56e604f000 ---p 00172000 08:01 12583528                  
/usr/local/zend/lib/datacache/php-5.3.x/ZendDataCache.so

7f56e604f000-7f56e6058000 rwxp 00171000 08:01 12583528                  
/usr/local/zend/lib/datacache/php-5.3.x/ZendDataCache.so

7f56e6058000-7f56e605b000 rwxp 00000000 00:00 0 

7f56e605b000-7f56e605e000 r-xp 00000000 08:01 537567                    
/usr/lib/gconv/UTF-16.so

7f56e605e000-7f56e625d000 ---p 00003000 08:01 537567                    
/usr/lib/gconv/UTF-16.so

7f56e625d000-7f56e625e000 r-xp 00002000 08:01 537567                    
/usr/lib/gconv/UTF-16.so

7f56e625e000-7f56e625f000 rwxp 00003000 08:01 537567                    
/usr/lib/gconv/UTF-16.so

7f56e625f000-7f56e6269000 r-xp 00000000 08:01 15845                     
/lib/libnss_nis-2.11.1.so

7f56e6269000-7f56e6468000 ---p 0000a000 08:01 15845                     
/lib/libnss_nis-2.11.1.so

7f56e6468000-7f56e6469000 r-xp 00009000 08:01 15845                     
/lib/libnss_nis-2.11.1.so

7f56e6469000-7f56e646a000 rwxp 0000a000 08:01 15845                     
/lib/libnss_nis-2.11.1.so

7f56e646a000-7f56e6472000 r-xp 00000000 08:01 15841                     
/lib/libnss_compat-2.11.1.so

7f56e6472000-7f56e6671000 ---p 00008000 08:01 15841                     
/lib/libnss_compat-2.11.1.so

7f56e6671000-7f56e6672000 r-xp 00007000 08:01 15841                     
/lib/libnss_compat-2.11.1.so

7f56e6672000-7f56e6673000 rwxp 00008000 08:01 15841                     
/lib/libnss_compat-2.11.1.so

7f56e6673000-7f56e6b9c000 r-xp 00000000 08:01 36700                     
/usr/lib/libociicus.so

7f56e6b9c000-7f56e6c9b000 ---p 00529000 08:01 36700                     
/usr/lib/libociicus.so

7f56e6c9b000-7f56e6c9c000 rwxp 00528000 08:01 36700                     
/usr/lib/libociicus.so

7f56e6c9c000-7f56e6cbf000 rwxp 00000000 00:00 0 

7f56e6cbf000-7f56e6ccb000 r-xp 00000000 08:01 15843                     
/lib/libnss_files-2.11.1.so

7f56e6ccb000-7f56e6eca000 ---p 0000c000 08:01 15843                     
/lib/libnss_files-2.11.1.so

7f56e6eca000-7f56e6ecb000 r-xp 0000b000 08:01 15843                     
/lib/libnss_files-2.11.1.so

7f56e6ecb000-7f56e6ecc000 rwxp 0000c000 08:01 15843                     
/lib/libnss_files-2.11.1.so

7f56e6ecc000-7f56e6ede000 r-xp 00000000 08:01 12583643                  
/usr/local/zend/lib/php_extensions/zip.so

7f56e6ede000-7f56e6fde000 ---p 00012000 08:01 12583643                  
/usr/local/zend/lib/php_extensions/zip.so

7f56e6fde000-7f56e6fe0000 rwxp 00012000 08:01 12583643                  
/usr/local/zend/lib/php_extensions/zip.so

7f56e6fe0000-7f56e702a000 r-xp 00000000 08:01 12583581                  
/usr/local/zend/lib/php_extensions/xsl.so

7f56e702a000-7f56e712a000 ---p 0004a000 08:01 12583581                  
/usr/local/zend/lib/php_extensions/xsl.so

7f56e712a000-7f56e712c000 rwxp 0004a000 08:01 12583581                  
/usr/local/zend/lib/php_extensions/xsl.so

7f56e712c000-7f56e7264000 r-xp 00000000 08:01 12583656                  
/usr/local/zend/lib/php_extensions/xmlwriter.so

7f56e7264000-7f56e7364000 ---p 00138000 08:01 12583656                  
/usr/local/zend/lib/php_extensions/xmlwriter.so

7f56e7364000-7f56e7372000 rwxp 00138000 08:01 12583656                  
/usr/local/zend/lib/php_extensions/xmlwriter.so

------------------------------------------------------------------------
[2010-05-26 12:33:20] contact at peterfrankjohnson dot co dot uk

Problem:

----------

I had this problem when importing an xml file with over 4200 items which
all needed inserting as individual records into a database.



I was using doctrine to insert the records and was creating a new object
for each record, but each time I ran the script it crashed with this
error after inserting exactly 3,579 records each time.



 Solution:

-----------

I then decided to try cleaning up the code I had written by using
unset() to destroy the object after it had been finished with. All of
the records were then inserted without any problems.



I would advise anyone receiving this error to check that variables and
objects are being destroyed with unset, because if you think about it
the error is telling you that the zend memory managers heap is
corrupted.

------------------------------------------------------------------------
[2010-04-30 10:41:31] php at foxteck dot org

Just for history/logging purposes, I got this same error on PHP 5.2.6 +
MySQL 

5.1 + Apache/2.2.4 (Unix) mod_ssl/2.2.4 

OpenSSL/0.9.7a DAV/2 + SuPHP on RHEL 4 today. 



It was related to mysql_* calls, phpinfo() worked fine, no errors. Any
mysql_* 

call crashed.





Code:

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

[erom...@roll tmp]$ cat /tmp/test.php 

<?php 

echo "Hola";

$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');

if (!$link) {

    die('Could not connect: ' . mysql_error());

}

echo 'Connected successfully';

mysql_close($link);





Reproducing

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

[erom...@roll tmp]$ /usr/local/php5-cgi/bin/php-cgi /tmp/test.php 

zend_mm_heap corrupted





Worked fine with USE_ZEND_ALLOC=0 

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

[erom...@roll tmp]$ export USE_ZEND_ALLOC=0

[erom...@roll tmp]$ /usr/local/php5-cgi/bin/php-cgi /tmp/test.php 

PHP Warning:  mysql_connect() [<a
href='function.mysql-connect'>function.mysql-

connect</a>]: Can't connect to local MySQL 

server through socket '/tmp/mysql.sock' (2) in /tmp/test.php on line 2

X-Powered-By: PHP/5.2.6

Content-type: text/html



HolaCould not connect: Can't connect to local MySQL server through
socket 

'/tmp/mysql.sock' (2)







Updating to 5.3.2 fixed the issue.



Here's the config line I used in BOTH 5.2.6 and 5.3.2, everything
compiled fine 

both times. Disregard the unused flags:



'./configure' \

'--prefix=/usr/local/php5-cgi' \

'--with-curl' \

'--with-freetype-dir=/usr' \

'--with-png-dir=/usr' \

'--enable-gd-native-ttf' \

'--with-jpeg-dir=/usr' \

'--with-png' \

'--enable-magic-quotes' \

'--enable-sockets' \

'--enable-sysvsem' \

'--enable-sysvshm' \

'--enable-sysvmsg' \

'--enable-track-vars' \

'--enable-trans-sid' \

'--enable-yp' \

'--enable-wddx' \

'--with-pear=/usr/share/pear' \

'--with-kerberos' \

'--with-mysql=/usr/local/mysql' \

'--with-mysqli' \

'--with-pcre-regex' \

'--disable-cli' \

'--enable-cgi' \

'--enable-mbstring' \

'--enable-fastcgi' \

'--enable-force-cgi-redirect' \

'--enable-discard-path' \

'--with-oci8=instantclient,/usr/lib/oracle/11.1.0.1/client/lib' \

'--with-gd' \

'--with-zlib' 





Cheers,

Eduardo Romero

http://foxteck.org

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


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the rest of the comments, please view the bug report online at

    http://bugs.php.net/bug.php?id=40479


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