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-   -   CentOS 5.2 - /usr/sbin/httpd: double free or corruption (!prev) error (http://www.linux-archive.org/centos/123006-centos-5-2-usr-sbin-httpd-double-free-corruption-prev-error.html)

J Potter 07-11-2008 11:46 AM

CentOS 5.2 - /usr/sbin/httpd: double free or corruption (!prev) error
 
Hi List,

We've been seeing the following error on a CentOS 5.2 x86_64 /
2.6.18-92.1.6.el5 install (from /var/log/httpd/error):


*** glibc detected *** /usr/sbin/httpd: double free or corruption (!
prev): 0x00002ad8ebed2d80 ***
[Thu Jul 10 19:12:19 2008] [notice] child pid 5261 exit signal
Segmentation fault (11)
[Thu Jul 10 19:12:48 2008] [notice] child pid 12180 exit signal
Segmentation fault (11)

...


The following packages are installed:
glibc-2.5-24
httpd-2.2.3-11.el5_1.centos.3
mysql-server-5.0.45-7.el5
mysql-5.0.45-7.el5
php-gd-5.1.6-20.el5
php-mysql-5.1.6-20.el5
php-common-5.1.6-20.el5
php-pdo-5.1.6-20.el5
php-cli-5.1.6-20.el5
php-5.1.6-20.el5
php-imap-5.1.6-20.el5


If we remove the php-pdo / php-mysql packages, then the crashes stop.
But, we need those packages, so that's not a solution.


Any ideas as to what might be causing this?

We've tried the obvious things; the only thing that's not "vanilla"
here are a few settings in /etc/php.ini (having to do with max
execution time and max memory). The php code that's being run does
have its share of php warn/notices:


PHP Notice: Undefined index: d in [snip] on line 1699
PHP Notice: Undefined index: verbose in [snip] on line 1819
PHP Warning: Invalid argument supplied for foreach() in [snip] on
line 1695


So I would not be surprised if it is tickling something out of the
ordinary, but it should still not be causing a segfault!


Any thoughts as to what's going on here, and how to fix it? I'm
tempted to install php 5.2.6 from utterramblings repo, to see if that
works around this.


Thanks!

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