Bug #80154 [NEW]: php-fpm segfaults for an unknown reason

From: sriccio at swisccenter dot com Operating system: Centos 8 PHP version: 7.4.10 Package: opcache Bug Type: Bug Bug description:php-fpm segfaults for an unknown reason Description: ------------ On our shared hosting servers, sometime (often) there php-fpm segfaults for an unknown reason. However we suspect it might be related to opcache, as if we disable it for certain sites, it seems these aren't segfaulting anymore. Packages we are using are Remi's php74-php-fpm-7.4.10-1.el8.x86_64$ opcache config in pools php_admin_value[opcache.file_cache_only] = 1 php_admin_value[opcache.file_cache] = "/home/xyz/.data/opcache/" php_admin_value[opcache.max_accelerated_files] = 10000 php_admin_value[opcache.memory_consumption] = 128 Expected result: ---------------- No segfault happening Actual result: -------------- [root@web21 ~]# coredumpctl info 1817197 PID: 1817197 (php-fpm) UID: 1098 (xyz) GID: 1100 (xyz) Signal: 11 (SEGV) Timestamp: Sun 2020-09-27 09:56:25 CEST (16min ago) Command Line: php74-fpm: pool xyz Executable: /opt/remi/php74/root/usr/sbin/php-fpm Control Group: /system.slice/php74-php-fpm.service Unit: php74-php-fpm.service Slice: system.slice Boot ID: 504629e6e9164777bb74535d8219c1ee Machine ID: 06e6f1ebaaae4c8aa0611d132201376a Hostname: web21 Storage: /var/lib/systemd/coredump/core.php-fpm.1098.504629e6e9164777bb74535d8219c1ee.1817197.1601193385000000.lz4 Message: Process 1817197 (php-fpm) of user 1098 dumped core. Stack trace of thread 1817197: #0 0x000055f36a078540 ZEND_BIND_STATIC_SPEC_CV_UNUSED_HANDLER (php-fpm) #1 0x000055f36a0afe32 execute_ex (php-fpm) #2 0x000055f36a0b9661 zend_execute (php-fpm) #3 0x000055f36a0308fb zend_execute_scripts (php-fpm) #4 0x000055f369fcdc38 php_execute_script (php-fpm) #5 0x000055f369e9b850 main (php-fpm) #6 0x00007fb9677e26a3 __libc_start_main (libc.so.6) #7 0x000055f369e9c6be _start (php-fpm) -- Edit bug report at https://bugs.php.net/bug.php?id=80154&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=80154&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=80154&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=80154&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=80154&r=needscript Try newer version: https://bugs.php.net/fix.php?id=80154&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=80154&r=support Expected behavior: https://bugs.php.net/fix.php?id=80154&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=80154&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=80154&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=80154&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=80154&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=80154&r=dst IIS Stability: https://bugs.php.net/fix.php?id=80154&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=80154&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=80154&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=80154&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=80154&r=mysqlcfg