Check with IBM WebSphere about their amqxcs2.dll. It seems to be
catching exceptions in an infinite loop that ran out of stack space
and crashed w3wp.exe. Need IBM to diagnose why that code is in an
infinite loop and crashing w3wp.exe
//David
http://w3-4u.blogspot.com
http://blogs.msdn.com/David.Wang
//
On Feb 6, 2:11 am, Keith Grimes
<KeithGri... RemoveThis @discussions.microsoft.com> wrote:
> We are currently testing a web application. After a timed period (normally 40
> minutes) the w3wp process crashes with the following message in the System
> event log
>
> A process serving application pool 'TMWOnline' suffered a fatal
> communication error with the World Wide Web Publishing Service.
>
> I have run IISState against the w3wp process with the results listed at the
> end of this question.
>
> I am aware there is an article indicating the above error can be raised in
> association with registry access permissions, but I have run regmon and no
> errors were reported.
>
> Can anyone point me as to what may have been happening?
>
> Thanks
>
> Keith
>
> --------------------------------------------------------------------------->
>
> (920.bf8): CLR exception - code e0434f4d (first chance)
> (920.bf8): CLR exception - code e0434f4d (first chance)
> (920.bf8): Unknown exception - code 000006ba (first chance)
> (920.bf8): CLR exception - code e0434f4d (first chance)
> (920.bf8): C++ EH exception - code e06d7363 (first chance)
> (920.bf8): CLR exception - code e0434f4d (first chance)
> (920.bf8): CLR exception - code e0434f4d (first chance)
> (920.bf8): Access violation - code c0000005 (first chance)
> (920.bf8): Access violation - code c0000005 (first chance)
>
> The above line is repeated several times
>
> (920.bf8): Access violation - code c0000005 (first chance)
> (920.bf8): Access violation - code c0000005 (first chance)
> (920.bf8): Stack overflow - code c00000fd (first chance)
> First chance exceptions are reported before any exception handling.
> This exception may be expected and handled.
> Opened log file 'E:\Tools\IIS Resources\IISState\output\IISState-2336.log'
>
> ***********************
> Starting new log output
> IISState version 3.3.1
>
> Fri Feb 02 10:56:51 2007
>
> OS = Windows 2003 Server
> Executable: w3wp.exe
> PID = 2336
>
> Note: Thread times are formatted as HH:MM:SS.ms
>
> ***********************
>
> IIS has crashed...
> Beginning Analysis
> DLL (!FunctionName) that failed: ntdll!RtlImageNtHeader
>
> Thread ID: 13
> System Thread ID: bf8
> Kernel Time: 0:2:0.546
> User Time: 0:4:19.718
> *** ERROR: Symbol file could not be found. Defaulted to export symbols for
> C:\Program Files\IBM\WebSphere MQ\bin\amqxcs2.dll -
> Other information: Thread is throwing an exception. Checking for known issues.
> *** ERROR: Symbol file could not be found. Defaulted to export symbols for
> C:\WINDOWS\system32\kernel32.dll -
> *** ERROR: Symbol file could not be found. Defaulted to export symbols for
> C:\Program Files\IBM\WebSphere MQ\bin\AMQRMQIA.dll -
> *** WARNING: Unable to verify checksum for
> C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System.Data\e8d41f3192ba0b48bcb8f286dcb61b57\System.Data.ni.dll
> *** WARNING: Unable to verify checksum for
> C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\mscorlib\ce1394b5f402474c823fa73976bfb4de\mscorlib.ni.dll
> *** ERROR: Symbol file could not be found. Defaulted to export symbols for
> C:\WINDOWS\system32\SHLWAPI.dll -
> *** ERROR: Symbol file could not be found. Defaulted to export symbols for
> C:\WINDOWS\system32\DNSAPI.dll -
> *** ERROR: Symbol file could not be found. Defaulted to export symbols for
> C:\WINDOWS\system32\mscoree.dll -
> *** ERROR: Symbol file could not be found. Defaulted to export symbols for
> C:\Program Files\IBM\WebSphere MQ\bin\AMQCMEMA.dll -
> *** ERROR: Symbol file could not be found. Defaulted to export symbols for
> C:\Program Files\IBM\WebSphere MQ\bin\amqmtmgc.dll -
> *** ERROR: Symbol file could not be found. Defaulted to export symbols for
> C:\WINDOWS\system32\msi.dll -
> *** ERROR: Symbol file could not be found. Defaulted to export symbols for
> C:\Program Files\IBM\WebSphere MQ\bin\mqic32.dll -
> *** WARNING: Unable to verify checksum for
> C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System.Web.Services\36b88bf3f609a04bbaa1680d89d3837d\System.Web.Services.ni.dll
> *** WARNING: Unable to verify checksum for
> C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System.Xml\b63a711c1733b441b1ecbc89b5643ae7\System.Xml.ni.dll
> *** WARNING: Unable to verify checksum for
> C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System\0cb233340d40ce4e9d15855e5c12ca6b\System.ni.dll
> *** WARNING: Unable to verify checksum for
> C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System.Web\9f4074956ce0174da032448512de573d\System.Web.ni.dll
> *** ERROR: Module load completed but symbols could not be loaded for
> C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System.Web\9f4074956ce0174da032448512de573d\System.Web.ni.dll
> *** ERROR: Symbol file could not be found. Defaulted to export symbols for
> \\?\C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\webengine.dll -
> Other information: Thread is throwing an exception. Checking for known issues.
> Thread Type: Other
> # ChildEBP RetAddr
> 00 01da300c 7c8155c2 ntdll!RtlImageNtHeader+0xd
> 01 01da301c 7c815638 ntdll!RtlCaptureImageExceptionValues+0xe
> 02 01da3058 7c813fe2 ntdll!RtlLookupFunctionTable+0xd0
> 03 01da30ac 7c8140b3 ntdll!RtlIsValidHandler+0x24
> 04 01da3120 7c82ecc6 ntdll!RtlDispatchException+0x78
> 05 01da3120 4e6eac94 ntdll!KiUserExceptionDispatcher+0xe
> WARNING: Stack unwind information not available. Following frames may be
> wrong.
> 06 01da3524 01da362c amqxcs2!xcsBuildDumpPtr+0x24
> 07 01da3610 00000000 0x1da362c
> Closing open log file E:\Tools\IIS Resources\IISState\output\IISState-2336.log