Bug #75968 [NEW]: php-fpm restarts master process in a loop when using Program execution Function

From: schnederle at futureweb dot at Operating system: Centos/RHEL 7.4 PHP version: 7.2.2 Package: Reproducible crash Bug Type: Bug Bug description:php-fpm restarts master process in a loop when using Program execution Function Description: ------------ Follow-Up to already reported Bug #70185 (https://bugs.php.net/bug.php?id=70185) Still a Problem with current PHP 7.2.2. When using Program execution Functions (passthru(), exec(), shell_exec(), system(), ...) the php-fpm: master process reproduceable crashes with signal 15 (SIGTERM) which leads to crash-loop, 100% CPU usage and spamming of Logs (30GB within 1 day on my Dev-Server) Test script: --------------- <?php exec('/usr/bin/postcss css_from.css --use autoprefixer --autoprefixer.remove "false" --output css_to.css'); echo 'Done'; ?> Actual result: -------------- Millions of: ... [16-Feb-2018 14:48:30] WARNING: [pool www] child 53778 exited on signal 15 (SIGTERM) after 0.046685 seconds from start [16-Feb-2018 14:48:30] WARNING: [pool www] child 53782 exited on signal 15 (SIGTERM) after 0.045416 seconds from start [16-Feb-2018 14:48:30] WARNING: [pool www] child 53785 exited on signal 15 (SIGTERM) after 0.045331 seconds from start [16-Feb-2018 14:48:30] WARNING: [pool www] child 53787 exited on signal 15 (SIGTERM) after 0.044765 seconds from start ... -- Edit bug report at https://bugs.php.net/bug.php?id=75968&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75968&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75968&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75968&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75968&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75968&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75968&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75968&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75968&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75968&r=support Expected behavior: https://bugs.php.net/fix.php?id=75968&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75968&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75968&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75968&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75968&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75968&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75968&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75968&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75968&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75968&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75968&r=mysqlcfg