|  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login
Bug #80275 opcache.jit crashes with some values
Submitted: 2020-10-23 09:31 UTC Modified: 2021-07-21 12:22 UTC
Avg. Score:3.8 ± 1.6
Reproduced:3 of 3 (100.0%)
Same Version:3 (100.0%)
Same OS:3 (100.0%)
From: celestinoxp at hotmail dot com Assigned:
Status: Open Package: JIT
PHP Version: 8.0Git-2020-10-23 (snap) OS: Windows 10
Private report: No CVE-ID: None
Have you experienced this issue?
Rate the importance of this bug to you:

 [2020-10-23 09:31 UTC] celestinoxp at hotmail dot com
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).

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.


Add a Patch

Pull Requests

Add a Pull Request


AllCommentsChangesGit/SVN commitsRelated reports
 [2020-10-23 11:02 UTC]
It would be helpful if you provide a stack backtrace[1] of the

[1] <>
 [2020-10-23 15:08 UTC] celestinoxp at hotmail dot com
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 © 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:  &
 [2020-10-23 15:16 UTC] celestinoxp at hotmail dot com
When close xampp, have one other report...

Report for xampp-control__PID__1588__Date__10_21_2020__Time_04_10_26PM__765__First chance exception 0X0000071A.dmp

Faulting Thread

Entry point   xampp_control!TMethodImplementationIntercept+225c00 
Create time   21/10/2020 15:39:46 
Time spent in user mode   0 Days 0:0:5.906 
Time spent in kernel mode   0 Days 0:0:28.468 

    Arg 1

    Arg 2

    Arg 3

    Arg 4


KERNELBASE!RaiseException+62     000071a     0000001     0000000     0000000    
rpcrt4!RpcpRaiseException+27     0000000     019fc3c     6672c6c     000071a    
rpcrt4!RpcRaiseException+16     000071a     6691326     0000000     0000000    
rpcrt4!NdrpRaisePipeException+15     0000000     0000000     0000000     0000000    
rpcrt4!NdrReceive+a2     0000000     0000000     0fa26e0     0000000    
rpcrt4!NdrLastAsyncReceive+30     fd573e4     0000000     0912c50     0fa26e0    
rpcrt4!NdrpCompleteAsyncClientCall+8a     019fd34     fd57244     0fa26b0     0fa26e0    
rpcrt4!Ndr64pCompleteAsyncCall+66     019fd34     0fa26b0     019fd38     19f6222    
rpcrt4!RpcAsyncCompleteCall+2c     0fa26e0     019fd34     0fa26b0     0fa26b0    
winsta!CWaitItem::Callback+32     19f6180     19f6156     091a8c8     19f6130    
winsta!CWindowNotification::Callback+a     091a8c8     19f6130     019fd68     66940e5    
winsta!CWaitItem::staticNotificationCallback+26     0fa26e0     0000000     0000000     091a8c8    
rpcrt4!CALL::IssueNotificationMain+5c     0000005     0fa2704     0fa26e0     0000000    
rpcrt4!CCALL::IssueNotification+29     0000000     6671a70     091a8c8     019fdb0    
rpcrt4!LRPC_CCALL::AbortCall+69     000071a     091a8c8     66719a0     090d910    
rpcrt4!LRPC_BIND_CCALL::ActualCancelCall+8e     000000a     0918dc0     091a778     090d910    
rpcrt4!LRPC_CCALL::ActualCancelCall+2a     000000a     0918dc0     091a778     090d910    
rpcrt4!LRPC_BASE_CCALL::CancelCall+ad     091a8c8     6671770     0fa2714     019fe28    
rpcrt4!LRPC_BASE_CCALL::CancelAsyncCall+a1     0000001     0fa26b0     0000000     0fa2728    
rpcrt4!RpcAsyncCancelCall+6b     0fa26e0     0000001     0fb7f8e     0fa26b0    
winsta!CWaitItem::StopWait+a3     0000001     0fa26b0     0fa2a78     19f5f8a    
winsta!CWindowNotification::StopWait+26     0000000     0fa26b0     0fa26b0     19f5e5c    
winsta!CWindowNotification::RemoveWindowNotificationFromList+39     067e86c     0000001     0000001     047047e    
winsta!CWindowNotification::DeleteWindowNotification+a8     0000001     2689c10     019fed8     4a62a3a    
winsta!WinStationUnRegisterConsoleNotification+15     0000000     047047e     0000634     019ff18    
wtsapi32!WTSUnRegisterSessionNotification+3a     047047e     05ff8f8     2689c10     05ffafc    
xampp_control!TMethodImplementationIntercept+19a8d0     019ff60     0409a82     019ff38     0688cdc    
xampp_control+9a74     019ff70     0688cdc     0688cdc     029b000    
xampp_control+9ebd     029b000     6546340     019ffdc     74d7c24    
kernel32!BaseThreadInitThunk+19     029b000     14baa23     0000000     0000000    
ntdll!__RtlUserThreadStart+2f     fffffff     74f8fd9     0000000     0000000    
ntdll!_RtlUserThreadStart+1b     0688cdc     029b000     0000000     8746341    

Exception Information

In xampp-control__PID__1588__Date__10_21_2020__Time_04_10_26PM__765__First chance exception 0X0000071A.dmp the assembly instruction at KERNELBASE!RaiseException+62 in C:\Windows\System32\KERNELBASE.dll from Microsoft Corporation
This exception originated from rpcrt4!RpcpRaiseException.  has caused an unknown exception (0x0000071a) on thread 0

This exception originated from rpcrt4!RpcpRaiseException+27. 

Module Information 

Image Name: C:\Windows\System32\KERNELBASE.dll   Symbol Type:  PDB 
Base address: 0x00905a4d   Time Stamp:  Wed Aug 26 05:29:11 2026  
Checksum: 0x00000000   Comments:   
COM DLL: False   Company Name:  Microsoft Corporation 
ISAPIExtension: False   File Description:  Windows NT BASE API Client DLL 
ISAPIFilter: False   File Version:  10.0.18362.1139 (WinBuild.160101.0800) 
Managed DLL: False   Internal Name:  Kernelbase.dll 
VB DLL: False   Legal Copyright:  © Microsoft Corporation. All rights reserved. 
Loaded Image Name:  KERNELBASE.dll   Legal Trademarks:   
Mapped Image Name:     Original filename:  Kernelbase.dll 
Module name:  KERNELBASE   Private Build:   
Single Threaded:  False   Product Name:  Microsoft® Windows® Operating System 
Module Size:  2 MBytes   Product Version:  10.0.18362.1139 
Symbol File Name:  c:\symbols\wkernelbase.pdb\92A69A10B0D42F11B049B4F0725BADEE1\wkernelbase.pdb   Special Build:  &
 [2020-10-23 17:14 UTC] celestinoxp at hotmail dot com
In windows report:

Apache HTTP Server

Deixou de funcionar

‎23/‎10/‎2020 18:09

Relatório enviado

Caminho de Aplicação Com Falha:	C:\xampp\apache\bin\httpd.exe

Assinatura do problema
Nome do Evento de Problema:	APPCRASH
Nome da Aplicação:	httpd.exe
Versão da Aplicação:
Carimbo de Data/Hora da Aplicação:	5f76f6fc
Nome do Módulo com Falhas:	php_opcache.dll
Versão do Módulo com Falhas:
Carimbo de Data/Hora do Módulo com Falhas:	5f9219d0
Código de exceção:	c0000005
Desvio de Exceção:	0000000000130838
Versão do SO:	10.0.18363.
ID de Região:	2070
Informações Adicionais 1:	4b52
Informações Adicionais 2:	4b52de579ead5c3b6567623a6307dcb7
Informações Adicionais 3:	7ecd
Informações Adicionais 4:	7ecd4add1fb1d401d8cc3ef0dfa9dd46

Informações adicionais sobre o problema
ID de Registo:	347c2487bb2c60e88a50466abedd3d7d (1896092867405626749)
 [2020-11-21 11:33 UTC] ondrej at mirtes dot cz
Probably related (Composer crashes on Windows with JIT 1255):
 [2021-07-21 12:22 UTC]
Possibly this is the same issue as fixed by
PHP Copyright © 2001-2021 The PHP Group
All rights reserved.
Last updated: Tue Sep 21 05:03:37 2021 UTC