Bug #77620 [NoF->ReO]: Opcache crashes on require file containing large array

Edit report at https://bugs.php.net/bug.php?id=77620&edit=1 ID: 77620 Updated by: requinix@php.net Reported by: kieran at miami-nice dot co dot uk Summary: Opcache crashes on require file containing large array -Status: No Feedback +Status: Re-Opened Type: Bug Package: opcache Operating System: Windows PHP Version: 7.1.26 Assigned To: sjon Block user comment: N Private report: N Previous Comments: ------------------------------------------------------------------------ [2019-06-28 16:39:37] kieran at miami-nice dot co dot uk Unable to reopen this... keeps saying "You aren't allowed to change a bug to that state." -- I can still replicate this on AWS t3.medium instance running Windows Server 2019 Base: 1. Install bitnami 7.2.19 image 2. Add test script 3. Load http://127.0.0.1/test.php Apache then crashes and trace shows php_opcache.dll caused stackoverflow. ------------------------------------------------------------------------ [2019-06-23 04:22:04] php-bugs at lists dot php dot net No feedback was provided. The bug is being suspended because we assume that you are no longer experiencing the problem. If this is not the case and you are able to provide the information that was requested earlier, please do so and change the status of the bug back to "Re-Opened". Thank you. ------------------------------------------------------------------------ [2019-06-14 12:38:31] sjon@php.net I've attempted to reproduce this using valgrind and a debug-build of 7.1.26 with opcache enabled, but it works fine and reports no leaks. If this is still an issue please provide more information ------------------------------------------------------------------------ [2019-02-14 17:32:53] kieran at miami-nice dot co dot uk Description: ------------ This may be a duplicate of https://bugs.php.net/bug.php?id=76844 (stackoverflow), but unlike that issue I cannot replicate on Ubuntu. The test case was generated on Bitnami WAMP with AWS Windows 2019 Base image, https://bitnami.com/stack/wamp/installer and backtrace generated using https://bugs.php.net/bugs-generating-backtrace-win32.php The issue only occurs in browser, if you load the test script via CLI it works as expected. I was also unable to replicate the issue on Ubuntu 18.04 with PHP 7.1.26 or 7.2.15... Test script: --------------- https://gist.github.com/bytestream/8779696f8e53f40bffd8e5ff179f2514#file-test-php Actual result: -------------- PHP_OPCACHE!ZEND_SSA_CHECK_SCC_VAR+21DIn httpd__PID__3728__Date__02_14_2019__Time_04_59_15PM__290__Second_Chance_Exception_C00000FD.dmp the assembly instruction at php_opcache!zend_ssa_check_scc_var+21d in C:\Bitnami\wampstack-7.1.26-0\php\ext\php_opcache.dll from The PHP Group has caused a stack overflow exception (0xC00000FD) when trying to write to memory location 0x19e83ff8 on thread 3 https://gist.github.com/bytestream/8ae01bdb8be94b433c7110f99e83bd25 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=77620&edit=1