#36246 [Opn->Fbk]: Memory problem (double free)

ID: 36246 Updated by: rrichards@php.net Reported By: eustaquiorangel at yahoo dot com -Status: Open +Status: Feedback Bug Type: XSLT related Operating System: Linux, Slackware 10.2 (current) PHP Version: 5.1.2 New Comment: Can you get a backtrace? It's working fine for me on both win and linux boxes. does it crash under cli too? Previous Comments: ------------------------------------------------------------------------ [2006-02-01 17:24:14] eustaquiorangel at yahoo dot com No way to avoid it with 5.1.1 +. :-( I downloaded the snapshot you told me, installed (phpversion() gives me "5.1.3-dev") and when running the sample, it shows me again the error_log message: *** glibc detected *** double free or corruption (fasttop): 0x082392a0 *** [Wed Feb 01 14:10:20 2006] [notice] child pid 11636 exit signal Aborted (6) I'm checking http://www.php.net/ChangeLog-5.php and seems that on the Windows version there were some changes: # Updated to libxml2-2.6.22 and libxslt-1.1.15 in the win32 bundle. (Rob) It's exactly the same versions I'm running here on Linux. And there were some little stuff like # Added constants for libxslt and libexslt versions: LIBXSLT_VERSION, LIBXSLT_DOTTED_VERSION, LIBEXSLT_VERSION and LIBEXSLT_DOTTED_VERSION. (Pierre) that would not affect this way the behaviour. I did some diffs with the ext/xsl 5.1.1 and 5.1.2 files but didn't find some relevant changes, just comment changes. Now I downgraded again to 5.1.1 and it's working fine again, no errors. Could you test the code on a Linux computer? ------------------------------------------------------------------------ [2006-02-01 16:19:43] tony2001@php.net Please try using this CVS snapshot: http://snaps.php.net/php5.1-latest.tar.gz For Windows: http://snaps.php.net/win32/php5.1-win32-latest.zip Works fine here. ------------------------------------------------------------------------ [2006-02-01 14:05:47] eustaquiorangel at yahoo dot com The test.xsl code is also there on the URL, on the end of the PHP code. One interesting thing: I installed right now PHP 5.1.1, and it's working fine! Not so fast as PHP5 (the same speed as PHP4), but no more double frees. ------------------------------------------------------------------------ [2006-02-01 13:54:03] tony2001@php.net To reproduce it we need test.xsl either. ------------------------------------------------------------------------ [2006-02-01 13:36:22] eustaquiorangel at yahoo dot com Description: ------------ After I use the XSLT extension to process a huge file, I got an error on the Apache error_log and a blank page on the browser. The error is: *** glibc detected *** double free or corruption (fasttop): 0x08236cc8 *** [Wed Feb 01 08:56:12 2006] [notice] child pid 7121 exit signal Aborted (6) Reproduce code: --------------- http://pastebin.com/533629 Expected result: ---------------- A regular HTML page and no error on error_log. Actual result: -------------- Sometimes it becomes blank and after some realoading it works, but *always* with an error message on error_log. I tested the code on all the ways I could but the only solution was downgrade PHP to 4.4.2 with Sablotron support. Then everything run fine (same Apache version, same OS), the only negavite thing is that it takes a lot of time to show the results on the browser, while using PHP 5.1.2 it was very fast. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=36246&edit=1