Bug #74387 [NEW]: php-cgi process leaks memory after killing script due to max_execution_time

From: nocheck-php at bsrealm dot net Operating system: Ubuntu 16.04 PHP version: 7.0.17 Package: CGI/CLI related Bug Type: Bug Bug description:php-cgi process leaks memory after killing script due to max_execution_time Description: ------------ Setup is Lighttpd with php configured as fcgi module. Repeated execution of provided script will lead to some serious memory leaks (200-500 MB per process). Image should be huge enough. I used this one: http://home.bsrealm.net/IMG_2466.JPG Test script: --------------- <?php header("Content-Type: text/plain"); ini_set('max_execution_time', 10); $st_tm = time(); $diff = 0; while (1){ $image = new \Imagick(realpath('./IMG_2466.JPG')); $image->thumbnailImage(64, 48, true, false); $image->clear; $image = null; if ((time() - $st_tm) > $diff) { $diff = (time() - $st_tm); echo "Waiting to Die " . date('h:i:s') . "\n"; flush(); } } ?> Expected result: ---------------- All memory should be freed after script is killed. Actual result: -------------- Memory is not freed. -- Edit bug report at https://bugs.php.net/bug.php?id=74387&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=74387&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=74387&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=74387&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=74387&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=74387&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=74387&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=74387&r=needscript Try newer version: https://bugs.php.net/fix.php?id=74387&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=74387&r=support Expected behavior: https://bugs.php.net/fix.php?id=74387&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=74387&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=74387&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=74387&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=74387&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=74387&r=dst IIS Stability: https://bugs.php.net/fix.php?id=74387&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=74387&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=74387&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=74387&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=74387&r=mysqlcfg