From:             
Operating system: Windows 2003 R2 SP2 32bits
PHP version:      5.3.11
Package:          Apache2 related
Bug Type:         Bug
Bug description:mbsring frequently crashing httpd.exe

Description:
------------
We are facing frequent httpd.exe crashes reported in Windows 2003 event
manager.
It happens at least 4 to 10 times a day at random. The cause of the issue
is unknown. 

The event manager reports the following: "Faulting application httpd.exe,
version 2.2.21.0, faulting module php_mbstring.dll, version 5.3.10.0, fault
address 0x0002c94c."



Test script:
---------------
Unfortunately we don't have any script to reproduce the issue as we don't
know what is causing it.

Actual result:
--------------
Type of Analysis Performed   Crash Analysis 
Machine Name   INTRASRV1 
Operating System   Windows Server 2003 Service Pack 2 
Number Of Processors   4 
Process ID   3236 
Process Image   C:\wamp\bin\apache\apache2.2.21\bin\httpd.exe 
System Up-Time   9 day(s) 16:05:13 
Process Up-Time   1 day(s) 21:20:02 


Thread 107 - System ID 4544
Entry point   msvcr90!_threadstartex 
Create time   4/26/2012 9:44:34 AM 
Time spent in user mode   0 Days 0:0:51.890 
Time spent in kernel mode   0 Days 0:0:21.843 


Full Call Stack

Function     Arg 1     Arg 2     Arg 3     Arg 4   Source 
php_mbstring!node_new_str+c     375b82af     375b82b0     03a4e8e0    
00000003  
c:\php-sdk\snap_5_3\vc9\x86\php-5.3.11-ts\ext\mbstring\oniguruma\regparse.c
@ 1463 + c 
php_mbstring!parse_exp+79a     00000000     03a4e940     375b8378    
03a4e968  
c:\php-sdk\snap_5_3\vc9\x86\php-5.3.11-ts\ext\mbstring\oniguruma\regparse.c
@ 4835 + c 
php_mbstring!parse_branch+94     03a4e908     00000000     03a4e940    
375b8378  
c:\php-sdk\snap_5_3\vc9\x86\php-5.3.11-ts\ext\mbstring\oniguruma\regparse.c
@ 5181 + 1d 
php_mbstring!parse_subexp+b2     05eff5b0     03a4e908     00000000    
03a4e940  
c:\php-sdk\snap_5_3\vc9\x86\php-5.3.11-ts\ext\mbstring\oniguruma\regparse.c
@ 5223 + 12 
php_mbstring!onig_parse_make_tree+c1     03a4e958     375b82a0     375b8378
    375b82b0  
c:\php-sdk\snap_5_3\vc9\x86\php-5.3.11-ts\ext\mbstring\oniguruma\regparse.c
@ 5279 + 3e 
php_mbstring!onig_compile+87     20074780     375b82a0     375b8378    
03a4ea2c  
c:\php-sdk\snap_5_3\vc9\x86\php-5.3.11-ts\ext\mbstring\oniguruma\regcomp.c
@ 5169 
php_mbstring!onig_new+4c     03a4ea1c     375b82a0     375b8378    
0000000d  
c:\php-sdk\snap_5_3\vc9\x86\php-5.3.11-ts\ext\mbstring\oniguruma\regcomp.c
@ 5399 + 14 
php_mbstring!php_mbregex_compile_pattern+ba     0000000d     01794440    
00000001     16cb4568  
c:\php-sdk\snap_5_3\vc9\x86\php-5.3.11-ts\ext\mbstring\php_mbregex.c @ 458
+ 25 
php_mbstring!_php_mb_regex_ereg_replace_exec+239     00000003     00000001 
   00df756a     00000003  
c:\php-sdk\snap_5_3\vc9\x86\php-5.3.11-ts\ext\mbstring\php_mbregex.c @ 857
+ 27 
php_mbstring!zif_mb_eregi_replace+14     00000003     375b7fa0     00000000
    00000000  
c:\php-sdk\snap_5_3\vc9\x86\php-5.3.11-ts\ext\mbstring\php_mbregex.c @ 980
+ 14 
php5ts!execute_internal+3a     12296958     00000001     16cd77d8    
00000003   c:\php-sdk\snap_5_3\vc9\x86\php-5.3.11-ts\zend\zend_execute.c @
1273 + 2c 
php_xdebug_2_1_2_5_3_vc9!get_module+205c     00000000     00000000    
00000000     00000000    



Exception Information
PHP_MBSTRING!NODE_NEW_STR+CIn
httpd__PID__3236__Date__04_28_2012__Time_07_04_35AM__700__First Chance
Access Violation.dmp the assembly instruction at
php_mbstring!node_new_str+c in
c:\wamp\bin\php\php5.3.11\ext\php_mbstring.dll from The PHP Group has
caused an access violation exception (0xC0000005) when trying to read from
memory location 0x00000100 on thread 107


Module Information 
Image Name: c:\wamp\bin\php\php5.3.11\ext\php_mbstring.dll   Symbol Type: 
PDB 
Base address: 0x00905a4d   Time Stamp:  Wed Apr 25 02:20:45 2012  
Checksum: 0x31000000   Comments:  Thanks to Tsukada Takuya, Rui Hirokawa 
COM DLL: False   Company Name:  The PHP Group 
ISAPIExtension: False   File Description:  Multibyte String Functions 
ISAPIFilter: False   File Version:  5.3.11 
Managed DLL: False   Internal Name:  MBSTRING extension 
VB DLL: False   Legal Copyright:  Copyright © 1997-2010 The PHP Group 
Loaded Image Name:  php_mbstring.dll   Legal Trademarks:  PHP 
Mapped Image Name:     Original filename:  php_mbstring.dll 
Module name:  php_mbstring   Private Build:   
Single Threaded:  False   Product Name:  PHP 
Module Size:  1.98 MBytes   Product Version:  5.3.11 
Symbol File Name:  c:\wamp\bin\php\php-debug-pack-5.3.11\php_mbstring.pdb  
Special Build:  & 


-- 
Edit bug report at https://bugs.php.net/bug.php?id=61875&edit=1
-- 
Try a snapshot (PHP 5.4):            
https://bugs.php.net/fix.php?id=61875&r=trysnapshot54
Try a snapshot (PHP 5.3):            
https://bugs.php.net/fix.php?id=61875&r=trysnapshot53
Try a snapshot (trunk):              
https://bugs.php.net/fix.php?id=61875&r=trysnapshottrunk
Fixed in SVN:                        
https://bugs.php.net/fix.php?id=61875&r=fixed
Fixed in SVN and need be documented: 
https://bugs.php.net/fix.php?id=61875&r=needdocs
Fixed in release:                    
https://bugs.php.net/fix.php?id=61875&r=alreadyfixed
Need backtrace:                      
https://bugs.php.net/fix.php?id=61875&r=needtrace
Need Reproduce Script:               
https://bugs.php.net/fix.php?id=61875&r=needscript
Try newer version:                   
https://bugs.php.net/fix.php?id=61875&r=oldversion
Not developer issue:                 
https://bugs.php.net/fix.php?id=61875&r=support
Expected behavior:                   
https://bugs.php.net/fix.php?id=61875&r=notwrong
Not enough info:                     
https://bugs.php.net/fix.php?id=61875&r=notenoughinfo
Submitted twice:                     
https://bugs.php.net/fix.php?id=61875&r=submittedtwice
register_globals:                    
https://bugs.php.net/fix.php?id=61875&r=globals
PHP 4 support discontinued:          
https://bugs.php.net/fix.php?id=61875&r=php4
Daylight Savings:                    https://bugs.php.net/fix.php?id=61875&r=dst
IIS Stability:                       
https://bugs.php.net/fix.php?id=61875&r=isapi
Install GNU Sed:                     
https://bugs.php.net/fix.php?id=61875&r=gnused
Floating point limitations:          
https://bugs.php.net/fix.php?id=61875&r=float
No Zend Extensions:                  
https://bugs.php.net/fix.php?id=61875&r=nozend
MySQL Configuration Error:           
https://bugs.php.net/fix.php?id=61875&r=mysqlcfg

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