#44554 [Fbk]: *** glibc detected *** double free or corruption when using sqlite handler

ID: 44554 Updated by: jani@php.net Reported By: vlada at mysh dot cz Status: Feedback Bug Type: Session related Operating System: Debian etch or lenny PHP Version: 5.2.12 New Comment: Also, this is kinda hard to reproduce so could you try and get a GDB bactrace of this? Instructions can be found here how to do it: http://bugs.php.net/bugs-generating-backtrace.php Previous Comments: ------------------------------------------------------------------------ [2010-01-18 10:27:27] jani@php.net Just to clarify: you are using your own compile and not any debian package? And no 3rd party patches are applied? ------------------------------------------------------------------------ [2010-01-17 15:22:28] vlada at mysh dot cz After a year, I came to same problem on newer server.. There were a lot of warnings in apache's error_log *** glibc detected *** /usr/local/apache/bin/httpd: double free or corruption (out): 0x08b11590 *** *** glibc detected *** /usr/local/apache/bin/httpd: double free or corruption (out): 0x08b12a78 *** *** glibc detected *** /usr/local/apache/bin/httpd: double free or corruption (out): 0x08b1aa30 *** *** glibc detected *** /usr/local/apache/bin/httpd: double free or corruption (out): 0x0a399120 *** *** glibc detected *** /usr/local/apache/bin/httpd: double free or corruption (!prev): 0x0a3eab68 *** etc.. Mainly while using DokuWiki or phpMyAdmin After I changed session handler from sqlite to files, problem dissapeared. Now it's a week with files session handler and no new entry in log saying something about glibc error. So I am sure, it's caused by sqlite session handler. ------------------------------------------------------------------------ [2008-04-03 21:06:00] jani@php.net If you can reliably prove it's sqlite session handler that causes it, please reclassify this report as "Session related" and update the summary. ------------------------------------------------------------------------ [2008-04-03 18:40:26] vlada at mysh dot cz So.. I have checked configuration of PHP. Default php.ini-dist worked, so I make diff between mine and default. Main difference was in method of saving sessions. We were using sqlite. When I changed it to default, files type, everything is now OK. I leave this, files session configuration run for a longer period, but I think, problem was i sqlite. ------------------------------------------------------------------------ [2008-04-02 10:20:58] jani@php.net If you have 2 servers and on one you don't have such problems and on the other one you have, just check what the differences are in those systems. php.ini, configure lines, compiler versions, etc. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/44554 -- Edit this bug report at http://bugs.php.net/?id=44554&edit=1