Bug #80275 [Com]: opcache.jit crashes with some values
Edit report at https://bugs.php.net/bug.php?id=80275&edit=1
ID: 80275
Comment by: celestinoxp at hotmail dot com
Reported by: celestinoxp at hotmail dot com
Summary: opcache.jit crashes with some values
Status: Open
Type: Bug
Package: JIT
Operating System: Windows 10
PHP Version: 8.0Git-2020-10-23 (snap)
Block user comment: N
Private report: N
New Comment:
After following the steps to generate a backtrace, without a compiler on windows, I got the results
... They are a little different from the screenshot on the instructions page to do the backtrace.
I will try to send some information that I think is important ... if necessary I am willing to send
debug files via email.
RESULTS when trying open phpmyadmin with opcache.jit=1255:
PHP_OPCACHE!ZEND_JIT_TRACE_EXIT_IS_HOT+68In httpd.exe_201021_154021.dmp the assembly instruction at
php_opcache!zend_jit_trace_exit_is_hot+68 in C:\xampp\php\ext\php_opcache.dll from The PHP Group has
caused an access violation exception (0xC0000005) when trying to read from memory location
0x0000001d on thread 153
Image Name: C:\xampp\php\ext\php_opcache.dll Symbol Type: PDB
Base address: 0x00000003`00905a4d Time Stamp: Fri Oct 23 00:46:24 2020
Checksum: 0x00000000`00000000 Comments: Thanks to Andi Gutmans, Zeev Suraski, Stanislav Malyshev,
Dmitry Stogov, Xinchen Hui
COM DLL: False Company Name: The PHP Group
ISAPIExtension: False File Description: Opcache
ISAPIFilter: False File Version: 8.0.0-dev
Managed DLL: False Internal Name: OPCACHE extension
VB DLL: False Legal Copyright: Copyright é The PHP Group
Loaded Image Name: php_opcache.dll Legal Trademarks: PHP
Mapped Image Name: Original filename: php_opcache.dll
Module name: php_opcache Private Build:
Single Threaded: False Product Name: PHP
Module Size: 1,76 MBytes Product Version: 8.0.0-dev
Symbol File Name: c:\users\celes\downloads\php-debug-pack-8.0.0-dev-win32-vs16-x64\php_opcache.pdb
Special Build: &
Previous Comments:
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[2020-10-23 11:02:17] cmb@php.net
It would be helpful if you provide a stack backtrace[1] of the
crash.
[1] <https://bugs.php.net/bugs-generating-backtrace-win32.php>
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[2020-10-23 09:31:39] celestinoxp at hotmail dot com
Description:
------------
I´m testing some values with opcache.jit and i think exists a bug.
I commented Bug #79854 but, i think is closed and no one answers, and i can´t re-open (who can
reopen, only author?)
So, i tested some values like 1255, and 1234 and i see apache resarting with some scripts.
I'm using:
- windows 10 (64 bits).
- PHP Version 8.0.0-dev (Build date: Oct 22 2020 23:41:25).
(https://github.com/shivammathur/php-builder-windows)
Test script:
---------------
1º - in php.ini --> opcache.jit = 1255
2º - start apache --> ok
3º - open link: http://localhost/dashboard/phpinfo.php --> ok
4º - open link: http://localhost/phpmyadmin -->
apache crashes --> apache restart and link not open.
5º - refresh browser --> apache crashes --> apache restart and link not open.
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Edit this bug report at https://bugs.php.net/bug.php?id=80275&edit=1
Thread (9 messages)