Bug #69233 [Com]: PHP-CGI.EXE and OPCache crash with error code 0xc0000005

From: Date: Fri, 13 Mar 2015 07:55:59 +0000
Subject: Bug #69233 [Com]: PHP-CGI.EXE and OPCache crash with error code 0xc0000005
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-191368@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=69233&edit=1

 ID:                 69233
 Comment by:         julientld at free dot fr
 Reported by:        julientld at free dot fr
 Summary:            PHP-CGI.EXE and OPCache crash with error code
                     0xc0000005
 Status:             Feedback
 Type:               Bug
 Package:            opcache
 Operating System:   Windows Server 2012
 PHP Version:        5.6.7RC1
 Block user comment: N
 Private report:     N

 New Comment:

Hello,

Thank you for your fast answer.

Ufortunately, I can't provide you a script as I don't have any error in the php log file
when this issue occurs.

When the server reboots and when the php-cgi.exe processes are "killed", there are
potentially hundreds of php scripts which could be in progress. I can't believe, each month for
a year and a half this is exactly the same script which is running when the server reboots.

I don't think this error is related to a script or a function in particular but this is rather
a problem for managing brutal shutdowns of the processes.

The backtrace is not sufficient to investigate this problem ?

Thanks.

Julien


Previous Comments:
------------------------------------------------------------------------
[2015-03-13 06:58:41] laruence@php.net

Thank you for this bug report. To properly diagnose the problem, we
need a short but complete example script to be able to reproduce
this bug ourselves. 

A proper reproducing script starts with <?php and ends with ?>,
is max. 10-20 lines long and does not require any external 
resources such as databases, etc. If the script requires a 
database to demonstrate the issue, please make sure it creates 
all necessary tables, stored procedures etc.

Please avoid embedding huge scripts into the report.



------------------------------------------------------------------------
[2015-03-12 20:59:33] julientld at free dot fr

Description:
------------
Hello,

Server:
Windows Server 2012
IIS 8.0
PHP x86 NTS VC11 5.6.7-snap r4d8db15
MySQL 5.6.21
WinCache 1.3.7.x

Since I have migrated my server to PHP 5.5 in 09/2013 then to 5.6 in 10/2014, I observe a crash of
the php-cgi.exe process related to the php_opcache.dll extension. The Windows Event Viewer displays
an error code 0xc0000005.

In fact, this error only occurs one time each month for a year and a half. When updates are
installed from Windows Update after the Patch Tuesday, the server is rebooted automatically and it
is at this moment that the error concerning OPCache occurs. I think there is a problem during the
shutdown of active processes. Visibly, I do not have other OPCache errors the rest of the time.

I have catched a few full dump files for this crash and ericsten has exported for me (thanks to him)
the two below backtraces.

Perhaps this bug is linked to #69067 ?

Hope this will help you to make a fix.

Bye

Julien



* Windows Event Viewer


Nom du journal :Application
Source :       Application Error
Date :         12/03/2015 03:24:30
ID de l’événement :1000
Catégorie de la tâche :(100)
Niveau :       Erreur
Mots clés :    Classique
Utilisateur :  N/A
Ordinateur :   SRV1
Description :
Nom de l’application défaillante php-cgi.exe, version : 5.6.7.0, horodatage : 0x54da8130
Nom du module défaillant : php_opcache.dll, version : 5.6.7.0, horodatage : 0x54da8167
Code d’exception : 0xc0000005
Décalage d’erreur : 0x00004fd4
ID du processus défaillant : 0xa94
Heure de début de l’application défaillante : 0x01d05c6b9ec857da
Chemin d’accès de l’application défaillante : C:\php\php-cgi.exe
Chemin d’accès du module défaillant: C:\php\ext\php_opcache.dll
ID de rapport : e90ef187-c85e-11e4-9411-90b11c2fa6ed
Nom complet du package défaillant : 
ID de l’application relative au package défaillant :



* PHP backtraces


[php-cgi.exe.2876.dmp, php-cgi.exe.2708.dmp, php-cgi.exe.2776.dmp, php-cgi.exe.2900.dmp]
0:000> .ecxr
eax=018dca40 ebx=00000001 ecx=74bd6580 edx=00000064 esi=00ff8e20 edi=743df07c
eip=743c4fd4 esp=017ff2d4 ebp=74bd5000 iopl=0         nv up ei pl nz na po nc
cs=0023  ss=002b  ds=002b  es=002b  fs=0053  gs=002b             efl=00010202
php_opcache!accel_startup+0x1d4:
743c4fd4 8b4064          mov     eax,dword ptr [eax+64h] ds:002b:018dcaa4=????????
0:000> k
  *** Stack trace for last set context - .thread/.cxr resets it
 # ChildEBP RetAddr  
00 017ff2e8 7469142f php_opcache!accel_startup+0x1d4
[c:\php-sdk\snap_5_6\vc11\x86\nts-windows-vc11-x86\ext\opcache\zendaccelerator.c @ 2594]
01 017ff2f4 746aac0a php5!zend_extension_startup+0xf
[c:\php-sdk\snap_5_6\vc11\x86\nts-windows-vc11-x86\zend\zend_extensions.c @ 154]
02 017ff30c 7469110f php5!zend_llist_apply_with_del+0x1a
[c:\php-sdk\snap_5_6\vc11\x86\nts-windows-vc11-x86\zend\zend_llist.c @ 178]
03 017ff3b0 77781b89 php5!zend_startup_extensions+0xf
[c:\php-sdk\snap_5_6\vc11\x86\nts-windows-vc11-x86\zend\zend_extensions.c @ 175]
04 017ff434 77781b47 ntdll!RtlpHeapFindListLookupEntry+0x2a
[d:\win8_gdr\minkernel\ntos\rtl\heapidx.c @ 608]
05 017ff45c 00eedb18 ntdll!RtlpFindEntry+0x49 [d:\win8_gdr\minkernel\ntos\rtl\heapidx.c @ 82]
WARNING: Frame IP not in any known module. Following frames may be wrong.
06 017ff490 7778575f 0xeedb18

0:000> .frame 0
00 017ff2e8 7469142f php_opcache!accel_startup+0x1d4
[c:\php-sdk\snap_5_6\vc11\x86\nts-windows-vc11-x86\ext\opcache\zendaccelerator.c @ 2594]
0:000> dv
      extension = 0x00f2ca40
           func = 0x00f81510
      ini_entry = 0x74694837
0:000> dt extension
Local var @ 0x17ff2f0 Type _zend_extension*
0x00f2ca40 
   +0x000 name             : 0x743db428  "Zend OPcache"
   +0x004 version          : 0x743db3b4  "7.0.4-dev"
   +0x008 author           : 0x743db3c0  "Zend Technologies"
   +0x00c URL              : 0x743db3d4  "http://www.zend.com/"
   +0x010 copyright        : 0x743db3ec  "Copyright (c) 1999-2015"
   +0x014 startup          : 0x743c4e00     int  php_opcache!accel_startup+0
   +0x018 shutdown         : (null) 
   +0x01c activate         : 0x743c4260     void  php_opcache!accel_activate+0
   +0x020 deactivate       : 0x743c4990     void  php_opcache!accel_deactivate+0
   +0x024 message_handler  : (null) 
   +0x028 op_array_handler : (null) 
   +0x02c statement_handler : (null) 
   +0x030 fcall_begin_handler : (null) 
   +0x034 fcall_end_handler : (null) 
   +0x038 op_array_ctor    : (null) 
   +0x03c op_array_dtor    : (null) 
   +0x040 api_no_check     : (null) 
   +0x044 build_id_check   : (null) 
   +0x048 reserved3        : (null) 
   +0x04c reserved4        : (null) 
   +0x050 reserved5        : (null) 
   +0x054 reserved6        : (null) 
   +0x058 reserved7        : (null) 
   +0x05c reserved8        : (null) 
   +0x060 handle           : 0x743c0000 HINSTANCE__
   +0x064 resource_number  : 0n-1
0:000> dt func
Local var @ 0x17ff2e4 Type _zend_function*
0x00f81510 
   +0x000 type             : 0x16 ''
   +0x000 common           : <unnamed-tag>
   +0x000 op_array         : _zend_op_array
   +0x000 internal_function : _zend_internal_function
0:000> dt ini_entry
Local var @ 0x17ff2e8 Type _zend_ini_entry*
0x74694837 
   +0x000 module_number    : 0n-2096079221
   +0x004 modifiable       : 0n1149830340
   +0x008 name             : 0x01a81424  ""
   +0x00c name_length      : 0xb3840f
   +0x010 on_modify        : 0x0d8b0000     int  +d8b0000
   +0x014 mh_arg1          : 0x74bd680c Void
   +0x018 mh_arg2          : 0x0274c985 Void
   +0x01c mh_arg3          : 0x4e8bd1ff Void
   +0x020 value            : 0x18468b1c  "--- memory read error at address 0x18468b1c ---"
   +0x024 value_length     : 0x574c985
   +0x028 orig_value       : 0xeb184189  "--- memory read error at address 0xeb184189 ---"
   +0x02c orig_value_length : 0x4578b0b
   +0x030 orig_modifiable  : 0n1334515235
   +0x034 modified         : 0n-1861973732
   +0x038 displayer        : 0x85184e8b     void  +ffffffff85184e8b

[php-cgi.exe.2684.dmp, php-cgi.exe.2860.dmp]
0:000> .ecxr
eax=0222d10f ebx=743db4c0 ecx=0222d113 edx=018dca40 esi=0002b5a5 edi=0222d0eb
eip=743c240e esp=00d8f63c ebp=00000001 iopl=0         nv up ei pl nz ac po nc
cs=0023  ss=002b  ds=002b  es=002b  fs=0053  gs=002b             efl=00010212
php_opcache!accel_new_interned_string+0x20e:
743c240e 894a68          mov     dword ptr [edx+68h],ecx ds:002b:018dcaa8=0222d0eb
0:000> kn
  *** Stack trace for last set context - .thread/.cxr resets it
 # ChildEBP RetAddr  
00 00d8f658 743c2ac0 php_opcache!accel_new_interned_string+0x20e
[c:\php-sdk\snap_5_6\vc11\x86\nts-windows-vc11-x86\ext\opcache\zendaccelerator.c @ 354]
01 00d8f670 743c5016 php_opcache!accel_use_shm_interned_strings+0x10
[c:\php-sdk\snap_5_6\vc11\x86\nts-windows-vc11-x86\ext\opcache\zendaccelerator.c @ 397]
02 00d8f68c 7469142f php_opcache!accel_startup+0x216
[c:\php-sdk\snap_5_6\vc11\x86\nts-windows-vc11-x86\ext\opcache\zendaccelerator.c @ 2604]
03 00d8f698 746aac0a php5!zend_extension_startup+0xf
[c:\php-sdk\snap_5_6\vc11\x86\nts-windows-vc11-x86\zend\zend_extensions.c @ 154]
04 00d8f6b0 7469110f php5!zend_llist_apply_with_del+0x1a
[c:\php-sdk\snap_5_6\vc11\x86\nts-windows-vc11-x86\zend\zend_llist.c @ 178]
05 00d8f754 77781b89 php5!zend_startup_extensions+0xf
[c:\php-sdk\snap_5_6\vc11\x86\nts-windows-vc11-x86\zend\zend_extensions.c @ 175]
06 00d8f7d8 77781b47 ntdll!RtlpHeapFindListLookupEntry+0x2a
[d:\win8_gdr\minkernel\ntos\rtl\heapidx.c @ 608]
07 00d8f800 0144db18 ntdll!RtlpFindEntry+0x49 [d:\win8_gdr\minkernel\ntos\rtl\heapidx.c @ 82]
WARNING: Frame IP not in any known module. Following frames may be wrong.
08 00d8f834 7778575f 0x144db18
0:000> dv
          arKey = <Memory access error>
     nKeyLength = <Memory access error>
       free_src = <Memory access error>
0:000> .frame 1
01 00d8f670 743c5016 php_opcache!accel_use_shm_interned_strings+0x10
[c:\php-sdk\snap_5_6\vc11\x86\nts-windows-vc11-x86\ext\opcache\zendaccelerator.c @ 397]
0:000> dv
0:000> .frame 2
02 00d8f68c 7469142f php_opcache!accel_startup+0x216
[c:\php-sdk\snap_5_6\vc11\x86\nts-windows-vc11-x86\ext\opcache\zendaccelerator.c @ 2604]
0:000> dv
      Unable to load c:\debuggersx86\Visualizers\Windows.Devices.Geolocation.natvis. Skipping...
extension = 0x0148ca40
           func = 0x014e16d0
      ini_entry = 0x74694837
0:000> dt extension
Local var @ 0xd8f694 Type _zend_extension*
0x0148ca40 
   +0x000 name             : 0x743db428  "Zend OPcache"
   +0x004 version          : 0x743db3b4  "7.0.4-dev"
   +0x008 author           : 0x743db3c0  "Zend Technologies"
   +0x00c URL              : 0x743db3d4  "http://www.zend.com/"
   +0x010 copyright        : 0x743db3ec  "Copyright (c) 1999-2015"
   +0x014 startup          : 0x743c4e00     int  php_opcache!accel_startup+0
   +0x018 shutdown         : (null) 
   +0x01c activate         : 0x743c4260     void  php_opcache!accel_activate+0
   +0x020 deactivate       : 0x743c4990     void  php_opcache!accel_deactivate+0
   +0x024 message_handler  : (null) 
   +0x028 op_array_handler : (null) 
   +0x02c statement_handler : (null) 
   +0x030 fcall_begin_handler : (null) 
   +0x034 fcall_end_handler : (null) 
   +0x038 op_array_ctor    : (null) 
   +0x03c op_array_dtor    : (null) 
   +0x040 api_no_check     : (null) 
   +0x044 build_id_check   : (null) 
   +0x048 reserved3        : (null) 
   +0x04c reserved4        : (null) 
   +0x050 reserved5        : (null) 
   +0x054 reserved6        : (null) 
   +0x058 reserved7        : (null) 
   +0x05c reserved8        : (null) 
   +0x060 handle           : 0x743c0000 HINSTANCE__
   +0x064 resource_number  : 0n-1



------------------------------------------------------------------------



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