Bug #79535 [NEW]: PHP crashes with specific opcache.optimization_level

From: roland at nextendweb dot com Operating system: Windows, Linux PHP version: 7.3.17 Package: opcache Bug Type: Bug Bug description:PHP crashes with specific opcache.optimization_level Description: ------------ I was able to reproduce the crash with PHP 7.3.17 on Linux and PHP 7.3.3 on Windows. I have a Joomla installation with some extensions installed. The crash comes when opcache.optimization_level has the following values: 0xfffffaaf 0xfffffabf 0xfffffbbf 0xfffffbaf The same crash does not happen if - opcode cache disabled - xdebug and opcode cache enabled - opcode cache enabled and opcache.optimization_level has the following values:0xfffffa9f, 0xfffffadf, 0xfffffacf, 0xfffffccf, 0xfffffbcf, 0xffffffff On PHP 7.3.3 Windows has no response in the browser the apache log says: [mpm_winnt:notice] [pid 7112:tid 572] AH00428: Parent: child process 25244 exited with status 3221225477 -- Restarting. On PHP 7.3.17 there was the last opened output buffer printed on the screen and functions with register_shutdown_function gets called. WinDBG shows the following: (5e9c.41f4): Access violation - code c0000005 (first chance) First chance exceptions are reported before any exception handling. This exception may be expected and handled. php7ts!object_and_properties_init+0xd: 00007ffb`798945ed 8b421c mov eax,dword ptr [rdx+1Ch] ds:00000000`0000001b=???????? 0:225> g (5e9c.41f4): Access violation - code c0000005 (!!! second chance !!!) php7ts!object_and_properties_init+0xd: 00007ffb`798945ed 8b421c mov eax,dword ptr [rdx+1Ch] ds:00000000`0000001b=???????? 0:225> g (5e9c.41f4): Access violation - code c0000005 (first chance) First chance exceptions are reported before any exception handling. This exception may be expected and handled. php7ts!object_and_properties_init+0xd: 00007ffb`798945ed 8b421c mov eax,dword ptr [rdx+1Ch] ds:00000000`0000001b=???????? Call stack: php7ts!object_and_properties_init+0xd php7ts!zend_objects_clone_members+0xa00 php7ts!execute_ex+0x5f php7ts!zend_call_function+0x2d0 php7ts!php_prefix_varname+0xdcfa php7ts!zend_exception_set_previous+0xecc php7ts!execute_ex+0x5f php7ts!zend_execute+0x1a8 php7ts!zend_execute_scripts+0xb9 php7ts!php_execute_script+0x261 php7apache2_4+0x3df1 libhttpd!ap_run_handler+0x35 libhttpd!ap_invoke_handler+0x10f libhttpd!ap_internal_redirect_handler+0x29a libhttpd!ap_process_request+0xf mod_http2+0x18822 mod_http2+0x18684 libhttpd!ap_run_process_connection+0x35 mod_http2+0x183e8 mod_http2+0x1c58e ucrtbase!thread_start<unsigned int (__cdecl*)(void *),1>+0x42 KERNEL32!BaseThreadInitThunk+0x14 ntdll!RtlUserThreadStart+0x21 I was unable to create test script as I'm not sure what could be the cause and the current environment is too complex. -- Edit bug report at https://bugs.php.net/bug.php?id=79535&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=79535&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=79535&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=79535&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=79535&r=needscript Try newer version: https://bugs.php.net/fix.php?id=79535&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=79535&r=support Expected behavior: https://bugs.php.net/fix.php?id=79535&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=79535&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=79535&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=79535&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=79535&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=79535&r=dst IIS Stability: https://bugs.php.net/fix.php?id=79535&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=79535&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=79535&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=79535&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=79535&r=mysqlcfg