Bug #80422 [Fbk->Opn]: php_opcache.dll crashes when using Apache 2.4 with JIT

Edit report at https://bugs.php.net/bug.php?id=80422&edit=1 ID: 80422 User updated by: martin at radiok2r dot de Reported by: martin at radiok2r dot de Summary: php_opcache.dll crashes when using Apache 2.4 with JIT -Status: Feedback +Status: Open Type: Bug Package: JIT Operating System: Windows 10 64-bit -PHP Version: 8.0.0RC5 +PHP Version: 8.0.0 Block user comment: N Private report: N New Comment: Thanks for your fast reply. This is the output from the DebugDiag Analysis Report after installing the symbols from the Debug Pack. Hope it helps. In httpd.exe_201126_135319.dmp the assembly instruction at php_opcache!zend_jit_trace_exit_is_hot+68 in c:\PHP\ext\php_opcache.dll from The PHP Group has caused an access violation exception (0xC0000005) when trying to read from memory location 0x00000004 on thread 162 Faulting Thread Entry point libhttpd!ap_run_generate_log_id+3ab0 Create time 26.11.2020 13:52:36 Time spent in user mode 0 Days 0:0:0.0 Time spent in kernel mode 0 Days 0:0:0.0 php_opcache!zend_jit_trace_exit_is_hot+68 [C:\php-snap-build\php80\vs16\x64\php-8.0.0-ts\ext\opcache\jit\zend_jit_trace.c @ 6916 + 4] 000000000000002 000000000000003 000000000000000 000000000000000 C:\php-snap-build\php80\vs16\x64\php-8.0.0-ts\ext\opcache\jit\zend_jit_trace.c @ 6916 + 4 php_opcache!zend_jit_trace_exit+d3e [C:\php-snap-build\php80\vs16\x64\php-8.0.0-ts\ext\opcache\jit\zend_jit_trace.c @ 7343 + 47] 00001d100000003 00000a701ebd940 00001d12baec730 000100000c44b40 C:\php-snap-build\php80\vs16\x64\php-8.0.0-ts\ext\opcache\jit\zend_jit_trace.c @ 7343 + 47 0x000010000800062b 00000a701ebd940 00001d12baec730 000100000c44b40 0001000`00aa2520 0x000001d100000003 00001d12baec730 000100000c44b40 000100000aa2520 00001d1`2cfc7540 0x000000a701ebd940 000100000c44b40 000100000aa2520 00001d12cfc7540 0000000`00000308 0x000001d12baec730 000100000aa2520 00001d12cfc7540 000000000000308 0007ffe`40701b31 0x0000100000c44b40 00001d12cfc7540 000000000000308 0007ffe40701b31 00001d1`2d00b048 0x0000100000aa2520 000000000000308 0007ffe40701b31 00001d12d00b048 0000000`0000003d 0x000001d12cfc7540 0007ffe40701b31 00001d12d00b048 00000000000003d 00001d1`2ce79000 0x00000308 00001d12d00b048 00000000000003d 00001d12ce79000 00001d12baec730 php8ts!zend_string_tolower_ex+281 [C:\php-snap-build\php80\vs16\x64\php-8.0.0-ts\Zend\zend_operators.c @ 2670] 000000000000000 000000000000000 000000000000000 000000000000000 C:\php-snap-build\php80\vs16\x64\php-8.0.0-ts\Zend\zend_operators.c @ 2670 Previous Comments: ------------------------------------------------------------------------ [2020-11-26 11:20:52] cmb@php.net Thank you for this bug report. To properly diagnose the problem, we need a backtrace to see what is happening behind the scenes. To find out how to generate a backtrace, please read http://bugs.php.net/bugs-generating-backtrace.php for *NIX and http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32 Once you have generated a backtrace, please submit it to this bug report and change the status back to "Open". Thank you for helping us make PHP better. ------------------------------------------------------------------------ [2020-11-26 11:10:57] martin at radiok2r dot de Description: ------------ Hello, I'm trying to run Apache with PHP 8 JIT-compiler on Windows 10 64-bit. I did: Downloaded and installed Apache 2.4.46 Win64 from https://www.apachelounge.com/download/ Downloaded and installed PHP VS16 x64 Thread Safe (2020-Nov-24 22:49:03) from: https://windows.php.net/download/ I inserted: LoadModule php_module "C:/[Path to PHP]/php8apache2_4.dll" AddHandler application/x-httpd-php .php into my httpd.conf I started Apache, and browsing to local webpages works fine. Okay, so I added to my php.ini: opcache.jit_buffer_size=100M which should activate the JIT-compiler. I restarted Apache and called a local webpage and just got: This site can’t be reached The connection was reset. Windows event-log shows me (I hope the translation is correct): Name of the crashed application: httpd.exe, Version: 2.4.46.0, Timestamp: 0x5f76f6fc Name of the crashed modul: php_opcache.dll, Version: 8.0.0.0, Timestamp: 0x5fbd7aa0 Exceptioncode: 0xc0000005 Erroroffset: 0x000000000012a298 ID of the faulty process: 0x4628 Path to the crashed appliction: C:\[Path to Apache]\bin\httpd.exe Path to the crashed modul:: c:\[Path to PHP]\ext\php_opcache.dll Removing: opcache.jit_buffer_size=100M from php.ini, and Apache works fine again. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=80422&edit=1