Bug #73598 [NEW]: Getting zend_mm_heap corrupted in error_log, website fails to load

From: andy at greenrobot dot com Operating system: CentOS Linux release 7.2.1511 (C PHP version: 5.6.28 Package: opcache Bug Type: Bug Bug description:Getting zend_mm_heap corrupted in error_log, website fails to load Description: ------------ I am experiencing a 'zend_mm_heap corrupted' in my Apache error logs. I have upgraded my server to the latest available with Yum and also upgraded to the latest 5.6 PHP. This happens with an open source adserver that we developed using Laravel: https://github.com/greenrobotllc/adserver. On my site it is serving about 50K impressions per day and getting this error sporadically. I am using PHP 5.6.28 with Opcache enabled. See my PHP info here: https://greenrobot.com/phpinfo.php. I have noticed before that the errors will kind of pile up after awhile and I will be forced to restart Apache because the adserver has stopped working at all, which fixes it for awhile. In addition to upgrading to the latest PHP 5.6 and Centos package versions, I upgraded my Laravel app to use Laravel 5.3. Test script: --------------- https://github.com/greenrobotllc/adserver Expected result: ---------------- No zend errors. Actual result: -------------- 'zend_mm_heap corrupted' in my Apache error logs. -- Edit bug report at https://bugs.php.net/bug.php?id=73598&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73598&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73598&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73598&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73598&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73598&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73598&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73598&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73598&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73598&r=support Expected behavior: https://bugs.php.net/fix.php?id=73598&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73598&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73598&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73598&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73598&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73598&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73598&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73598&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73598&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73598&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73598&r=mysqlcfg