Bug #73381 [NEW]: Mysterious fpm coredump

From: lsn at nuvopoint dot com Operating system: Ubuntu 16.04.1 LTS PHP version: 7.0.12 Package: FPM related Bug Type: Bug Bug description:Mysterious fpm coredump Description: ------------ FPM makes a coredump, which is captured to /var/crash. The coredump file can be found here: https://cloud.nuvoweb.dk/_usr_sbin_php-fpm7.0.33.crash I've just started debugging this, and I have zero experience reading these crash files, so I can't report much. What I can tell is that its running on Ubuntu 16 with all the latest upgrades (as of today), on Nginx 1.11.5. No errors in any logs, be it syslog, nginx-error.log, php's log. The only hint is an error in php-fpm: [24-Oct-2016 09:44:03] NOTICE: fpm is running, pid 1057 [24-Oct-2016 09:44:03] NOTICE: ready to handle connections [24-Oct-2016 09:44:03] NOTICE: systemd monitor interval set to 10000ms [24-Oct-2016 10:06:04] WARNING: [pool www] child 1371 exited on signal 11 (SIGSEGV - core dumped) after 1321.212667 seconds from start I can reproduce it on our setup, using Postman, but if we could decode the crash log above, that might reveal if that is even necessary. I'm available to debug this if needed. -- Edit bug report at https://bugs.php.net/bug.php?id=73381&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73381&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73381&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73381&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73381&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73381&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73381&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73381&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73381&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73381&r=support Expected behavior: https://bugs.php.net/fix.php?id=73381&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73381&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73381&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73381&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73381&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73381&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73381&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73381&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73381&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73381&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73381&r=mysqlcfg