Bug #81365 [NEW]: Using OPcache with SHM and file causes 'Allowed memory size of ... bytes exhau'

From: wedwards at cyberfusion dot nl Operating system: Debian 10 PHP version: 7.4.22 Package: opcache Bug Type: Bug Bug description:Using OPcache with SHM and file causes 'Allowed memory size of ... bytes exhau' Description: ------------ I recently disabled opcache.file_cache_only (default). opcache.file_cache is set, however. This caused the issue below on 1 out of estimated 100 websites. When using OPcache with SHM Cache *or* File Cache, OPcache works as expected. When using OPcache with SHM Cache *and* File Cache, memory is exhausted: "Allowed memory size of 268435456 bytes exhausted (tried to allocate 70064798980 bytes)" ... followed by PHP-FPM logging the process ended with SIGSEGV. I 'fixed' this issue by physically removing the OPcache directory tree. This leads me to believe the issue is with the size of this website's OPcache, which is 87 MiB (the second largest one is 69 MiB). I expect this issue to reoccur as the OPcache grows. I found one other report of this behaviour (see last lines): https://github.com/Yoast/wordpress-seo/issues/6334#issuecomment-269647620 -- Edit bug report at https://bugs.php.net/bug.php?id=81365&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=81365&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=81365&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=81365&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=81365&r=needscript Try newer version: https://bugs.php.net/fix.php?id=81365&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=81365&r=support Expected behavior: https://bugs.php.net/fix.php?id=81365&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=81365&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=81365&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=81365&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=81365&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=81365&r=dst IIS Stability: https://bugs.php.net/fix.php?id=81365&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=81365&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=81365&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=81365&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=81365&r=mysqlcfg