Edit report at http://bugs.php.net/bug.php?id=40479&edit=1
ID: 40479
Comment by: contact at peterfrankjohnson dot co dot uk
Reported by: rrossi at maggioli dot it
Summary: zend_mm_heap corrupted
Status: No Feedback
Type: Bug
Package: Reproducible crash
Operating System: Suse Linux 9.0
PHP Version: 5.2.1
New Comment:
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.
Previous Comments:
------------------------------------------------------------------------
[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
------------------------------------------------------------------------
[2009-11-16 19:16:03] gfmailweb at gmail dot com
Adding
export USE_ZEND_ALLOC=0
to apache2ctl on Ubuntu Hardy worked for me too.
------------------------------------------------------------------------
[2009-11-12 13:38:31] astehlik at intera dot de
I can confirm, that my apache crashed with the error "zend_mm_heap
corrupted" under heavy load. After that I get a lot of Segmentation
faults (11).
OS: CentOS 5.4
PHP: 5.2.11
Apache: 2.2.14
The server is running as a virtual machine in an ESXi 3.5 Server.
I'm now testing the "export USE_ZEND_ALLOC=0" workaround in my
apachectl. I'll provide more feedback as soon as I know if this helps.
------------------------------------------------------------------------
[2009-10-27 14:54:49] mike at blueroot dot co dot uk
I see this error all the time on my complicated application. I am using
php-fcgi + nginx + mongodb so I am fairly sure it is something in core.
I find that even a small change can fix the problem, output buffering
seems to be the culprit for me (ob_end_flush() seems to fix it) which is
maybe why people can only reproduce on production servers?
------------------------------------------------------------------------
[2009-10-14 20:43:45] tulio dot silva at mpt dot gov dot br
Hi all,
in answer to sriram above, here we go:
-bash-3.00$ /usr/local/apache2/bin/httpd -V
Server version: Apache/2.2.13 (Unix)
Server built: Oct 5 2009 10:20:45
Server's Module Magic Number: 20051115:23
Server loaded: APR 1.3.8, APR-Util 1.3.9
Compiled using: APR 1.3.8, APR-Util 1.3.9
Architecture: 64-bit
Server MPM: Prefork
threaded: no
forked: yes (variable process count)
Server compiled with....
-D APACHE_MPM_DIR="server/mpm/prefork"
-D APR_HAS_SENDFILE
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
-D APR_USE_SYSVSEM_SERIALIZE
-D APR_USE_PTHREAD_SERIALIZE
-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
-D APR_HAS_OTHER_CHILD
-D AP_HAVE_RELIABLE_PIPED_LOGS
-D DYNAMIC_MODULE_LIMIT=128
-D HTTPD_ROOT="/usr/local/apache2"
-D SUEXEC_BIN="/usr/local/apache2/bin/suexec"
-D DEFAULT_PIDLOG="logs/httpd.pid"
-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
-D DEFAULT_LOCKFILE="logs/accept.lock"
-D DEFAULT_ERRORLOG="logs/error_log"
-D AP_TYPES_CONFIG_FILE="conf/mime.types"
-D SERVER_CONFIG_FILE="conf/httpd.conf"
So it is prefork. If ZTS is enabled with --enable-maintainer-zts, then
it´s off. Also, from phpinfo(),
Debug Build no
Thread Safety disabled
Zend Memory Manager enabled
and it seems USE_ZEND_ALLOC=0 does nothing for me. I´m on CentOS 4.6 on
multi-core AMD64, with nearly 1GB RAM and a very busy server. There are
plenty of custom systems in this machine, so I can´t tell what is
causing it, but it started after we began using Elxis 2009.0 in
production state (about 15 hits/second).
My configure lines includes a lot of other parameters, like oci and
MySQLi, but if of any use, I´ll compare the relevant items with rrossi´s
(bug opener) config.nice:
'./configure' \
'--with-apxs' \ # idem
'--with-mysql=/usr/local/mysql' \ #'--with-mysql=/usr' (CentOS rpm)
'--with-bz2' \ # no
'--with-mcrypt' \ #no
'--with-pgsql' \ #no
'--without-pear' \ # --with-pear
Apache also includes a lot of modules. The most relevant, I guess, are
rewrite, proxy (http & ajp), ssl, and cache. If any other info needed,
feel free (and please) contact me. It´s been a serious problem down
here.
------------------------------------------------------------------------
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