#40578 [NEW]: Thread safety issue with imagettftext

From: scottmacvicar at ntlworld dot com Operating system: RHEL 4 PHP version: 5.2.1 PHP Bug Type: GD related Bug description: Thread safety issue with imagettftext Description: ------------ There appears to be a race condition with the truetype font support of GD. I can see mutexes in the code for the font cache so there must be a code path that's missed. Backtrace: http://public.vbulletin.com/bugs/php/gd_thread_safety-bt.txt Reproduce code: http://public.vbulletin.com/bugs/php/gd_thread_safety.phps http://public.vbulletin.com/bugs/php/HECK.TTF Command: ab -c 30 -n 10000 http://localhost/~scott/gd_thread_safety.php Using Apache 2 with the Worker MPM. Only patch applied to the build is a thread safety patch for zend_strtod.c -- Edit bug report at http://bugs.php.net/?id=40578&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=40578&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=40578&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=40578&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=40578&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=40578&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=40578&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=40578&r=needscript Try newer version: http://bugs.php.net/fix.php?id=40578&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=40578&r=support Expected behavior: http://bugs.php.net/fix.php?id=40578&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=40578&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=40578&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=40578&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=40578&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=40578&r=dst IIS Stability: http://bugs.php.net/fix.php?id=40578&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=40578&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=40578&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=40578&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=40578&r=mysqlcfg