ID: 49501 User updated by: romain dot riviere at gmail dot com Reported By: romain dot riviere at gmail dot com -Status: Feedback +Status: Open Bug Type: *General Issues Operating System: Gentoo Linux 32bit PHP Version: 5.2.10 New Comment:
I was able to reproduce the problem even with the latest sources. I am beginning to suspect PaX/GrSecurity. Are there any catches to be aware of when running PHP in that context ? I know of the --with-pic/TEXTREL issue, but apparently there must be something else to it. Previous Comments: ------------------------------------------------------------------------ [2009-09-09 19:43:33] j...@php.net And make sure you really do simply this: 1. Unpack sources 2. ./configure --disable-all --disable-cgi && make 3 run the test script with 'sapi/cli/php -n -d memory_limit=128M yourscript.php ------------------------------------------------------------------------ [2009-09-09 19:42:25] j...@php.net Please try using this snapshot: http://snaps.php.net/php5.2-latest.tar.gz For Windows: http://windows.php.net/snapshots/ I can not reproduce this at all on several different servers running latest svn checkout. ------------------------------------------------------------------------ [2009-09-09 15:28:04] romain dot riviere at gmail dot com The problem still happens without --enable-debug. I could reproduce the bug in CLI with a simple while(true). More specifically (and with memory_limit=128M this time): <?php ini_set('display_errors',true); if (isset($_GET['size']) && $_GET['size'] < 200) { $mb = intval($_GET['size']); } else { $mb=125; } while(true) { $var = ''; echo 'Memory limit: '.ini_get('memory_limit').'<br>'; for ($i=0; $i<=$mb; $i++) { $var.= str_repeat('a',1*1024*1024); echo memory_get_usage().'<br>'; } echo 'String length: '. strlen($var); } ?> This script crashes after a few iterations with the message: Fatal error: Out of memory (allocated 123469824) (tried to allocate 122683393 bytes) in /home/acrm/OF-svn/2.0/test.php on line 14 zend_mm_heap corrupted The memory_get_usage() output increases until it busts the 128M limit. Now, I'm not too familiar with PHP's memory management, but I find it strange that the script should hog memory that way: shouldn't it free some RAM when $var is reset to '' ? At any rate, the initial issue remains, whether this one is related or not. ------------------------------------------------------------------------ [2009-09-09 09:41:59] j...@php.net You also seem to be using --enable-debug, does it happen without it? And can you reproduce the same on command line? ------------------------------------------------------------------------ [2009-09-09 03:41:48] romain dot riviere at gmail dot com Just to confirm: the problem is still present without pic. ------------------------------------------------------------------------ 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/49501 -- Edit this bug report at http://bugs.php.net/?id=49501&edit=1
