[php-src] Issue #12010: opcache crashes on high volume IIS servers (Windows)

Issue: https://github.com/php/php-src/issues/12010 Author: juongithub ### Description There is no way to reproduce the bug with code. The sneakiest thing is that everything works as it should, but opcache fails when the server load increases beyond a certain threshold. I assume, but of course I'm not sure, because of the shared memory. This assumption derives from the fact that when it happens all the PHP (cgi) instances close unexpectedly (opcache's shared memory should be the only thing connecting them). I also tried to change the memory model, but nothing changes. Furthermore, in 99% of the cases no error is visible on the Windows events, but obviously on the IIS user side it shows a 500 error. The only way I've found to reproduce the bug is to overload a test server (with the same configuration as the production server), after some time (usually a few minutes), all PHP instances close and occasionally I see an error similar to this: ``` Faulting application name: php-cgi.exe, version: 8.0.28.0, time stamp: 0x63eb7b04 Faulting module name: php_opcache.dll, version: 8.0.28.0, time stamp: 0x63eb7e4f Exception code: 0xc0000005 Fault offset: 0x0000000000168011 Faulting process id: 0x1f2c Faulting application start time: 0x01d9d3b2249e086e Faulting application path: /path/to/php-cgi.exe Faulting module path:/path/to/php_opcache.dll Report Id: de8f6365-8a29-4f20-b3cf-d2d160d39508 Faulting package full name: Faulting package-relative application ID: ``` The proof that the cause is linked to opcache I obtained by subjecting the same server to the same load, but disabling opcache. The server becomes (obviously) very slow, but no PHP instance crashes even after 1 hour. ### PHP Version PHP 8.0.28 + PHP 8.0.29 + (PHP 8.0.?) ### Operating System Windows Server 2022 Datacenter