Bug #81204 [Com]: PHP 8 crashes with Access Violation on Apache restart

From: Date: Mon, 28 Jun 2021 14:14:09 +0000
Subject: Bug #81204 [Com]: PHP 8 crashes with Access Violation on Apache restart
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-234665@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=81204&edit=1

 ID:                 81204
 Comment by:         jeremy dot dunn at dhamma dot org
 Reported by:        jeremy dot dunn at dhamma dot org
 Summary:            PHP 8 crashes with Access Violation on Apache
                     restart
 Status:             Open
 Type:               Bug
 Package:            Apache2 related
 Operating System:   Windows Server 2012 R2
 PHP Version:        8.0.7
 Block user comment: N
 Private report:     N

 New Comment:

sorry, more information on the previous comment:

"PHP" resolves to the location I expect, as per previous comment
  C:\Users\jeremy>where php
  C:\Program Files\php\php.exe

"PHP" is definitely the correct version:

  C:\Users\jeremy>php --version
  PHP 8.0.7 (cli) (built: Jun  2 2021 00:41:03) ( ZTS Visual C++ 2019
  Copyright (c) The PHP Group
  Zend Engine v4.0.7, Copyright (c) Zend Technologies
    with Zend OPcache v8.0.7, Copyright (c), by Zend Technologies


Previous Comments:
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[2021-06-28 14:10:39] jeremy dot dunn at dhamma dot org

CMB commented:
> See <https://bugs.php.net/bug.php?id=81172#1624097564>.

that ticket was closed as "not a bug" due to incorrect / leftover PATH variable

I just double-checked the PATH on the machine from which this issue arose, and it points to the
CURRENT (8.0.7) version of PHP:

  C:\Program Files\php;

------------------------------------------------------------------------
[2021-06-28 13:13:35] cmb@php.net

See <https://bugs.php.net/bug.php?id=81172#1624097564>.

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[2021-06-27 14:22:13] jeremy dot dunn at dhamma dot org

Description:
------------
Windows Server 2012 R2; Apache httpd 2.4.48 x64; PHP 8.0.7 TS x64

Apache installed as windows service
PHP 8 installed as Apache module:
  LoadModule php_module "C:\Program Files\PHP\php8apache2_4.dll"

restarting Apache using ApacheMonitor (clean restart) causes crash dump as follows:


Report for httpd.exe_210627_070208.dmp
=========================================

Type of Analysis Performed Crash Analysis 
Machine Name DHAMMAREGPROD2 
Operating System Windows Server 2012 R2 
Number Of Processors 4 
Process ID 8512 
Process Image C:\Program Files\Apache24\bin\httpd.exe 
Command Line "C:\Program Files\Apache24\bin\httpd.exe" -d "C:/Program
Files/Apache24" 
System Up-Time 1 day(s) 01:47:30 
Process Up-Time 10:47:12 
Processor Type X64 
Process Bitness 64-Bit 


Faulting Thread
==================
Entry point   httpd!OPENSSL_Applink+2014 
Create time   6/26/2021 8:14:56 PM 
Time spent in user mode   0 Days 0:0:0.140 
Time spent in kernel mode   0 Days 0:0:0.125 


    Arg 1

    Arg 2

    Arg 3

    Arg 4

  Source

php8ts!realpath_cache_clean+4f
[C:\php-snap-build\php80\vs16\x64\php-8.0.7-ts\Zend\zend_virtual_cwd.c @ 346 + f]    
000000000000038     000000000000007     000000000000118    
00000f92d4dfd30   C:\php-snap-build\php80\vs16\x64\php-8.0.7-ts\Zend\zend_virtual_cwd.c @ 346
+ f 
php8ts!tsrm_shutdown+f1 [C:\php-snap-build\php80\vs16\x64\php-8.0.7-ts\TSRM\TSRM.c @ 192 + c]    
00000f8e40756b8     00000f8e3f0fcd9     000000000000000    
00000f8e3f0fb70   C:\php-snap-build\php80\vs16\x64\php-8.0.7-ts\TSRM\TSRM.c @ 192 + c 
php8apache2_4!php_apache_server_shutdown+24
[C:\php-snap-build\php80\vs16\x64\php-8.0.7-ts\sapi\apache2handler\sapi_apache2.c @ 421]    
00000f8e40756b8     000000000000000     000000000000000    
000000000000000  
C:\php-snap-build\php80\vs16\x64\php-8.0.7-ts\sapi\apache2handler\sapi_apache2.c @ 421 
libapr_1!apr_pool_destroy+6e     00000f8e4071c28     00000f8e40a4478    
00000f8e4071d30     000000000000000    
libapr_1!apr_pool_destroy+4f     00000f8e4071d30     00000f800000000    
000000000000000     000000000000000    
httpd!OPENSSL_Applink+280     00000f8e40756b8     0007ff82e678208    
00000f8e3f0fcd9     000000000000000    
httpd!OPENSSL_Applink+eec     000000000000000     000000000000000    
000000000000000     000000000000000    
httpd!OPENSSL_Applink+1fa4     0007ff63e3d3014     0007ff63daff000    
000000000000000     000000000000000    
kernel32!BaseThreadInitThunk+22     0007ff8345813d0     000000000000000    
000000000000000     000000000000000    
ntdll!RtlUserThreadStart+34     000000000000000     000000000000000    
000000000000000     000000000000000    


CLR Information


Exception Information


PHP8TS!REALPATH_CACHE_CLEAN+4FIn httpd.exe_210627_070208.dmp the assembly instruction at
php8ts!realpath_cache_clean+4f in C:\Program Files\php\php8ts.dll from The PHP Group has caused an
access violation exception (0xC0000005) when trying to read from memory location 0xe4a3f000 on
thread 0


Module Information 

Image Name: C:\Program Files\php\php8ts.dll   Symbol Type:  PDB 
Base address: 0x00000003`00905a4d   Time Stamp:  Tue Jun 1 16:20:14 2021  
Checksum: 0x00000000`00000000   Comments:   
COM DLL: False   Company Name:  The PHP Group 
ISAPIExtension: False   File Description:  PHP Script Interpreter 
ISAPIFilter: False   File Version:  8.0.7 
Managed DLL: False   Internal Name:  PHP Script Interpreter 
VB DLL: False   Legal Copyright:  Copyright © The PHP Group 
Loaded Image Name:  php8ts.dll   Legal Trademarks:  PHP 
Mapped Image Name:     Original filename:  php8ts.dll 
Module name:  php8ts   Private Build:   
Single Threaded:  False   Product Name:  PHP 
Module Size:  8.87 MBytes   Product Version:  8.0.7 
Symbol File Name:  c:\program files\php-debug\php8ts.pdb   Special Build:  & 




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