Hello
I really hope someone can help me with this. I have been trying to figure it out for days and I am beginning to go mad! The issue I am having appears to be very similar to https://issues.apache.org/bugzilla/show_bug.cgi?id=45063. It might even be the same issue. Note I can recreate the problem on various flavours of Windows, and in IIS 6 & IIS 7. Details of the issue: I have a web application which lives under the "Default Web Site" in IIS 6, and which has its own app pool. The redirector (isapi_redirect.dll 1.2.28) lives under the DefaultAppPool. The user would log into our web application (which uses our app pool) and everything works as expected. If he then uses functionality which uses the redirector (and the DefaultAppPool), w3wp.exe will probably crash. (I say "probably" because sometimes it works without error). Note everything works fine (i.e. there is no crash) if I run the DefaultAppPool as "Local System"; the problem only seems to exist if I run the DefaultAppPool as "Local Service" or "Network Service". Details of the crash: In the Event Viewer I can see the following - Faulting application w3wp.exe, version 6.0.3790.3959, faulting module ntdll.dll, version 5.2.3790.4455, fault address 0x0004f053. And if I catch the crash using Debug Diagnostic Tool - Thread 5 - System ID 6140 Entry point w3tp!THREAD_MANAGER::ThreadManagerThread Create time 01/02/2010 13:13:26 Time spent in user mode 0 Days 0:0:0.0 Time spent in kernel mode 0 Days 0:0:0.15 Function Arg 1 Arg 2 Arg 3 Source ntdll!RtlpWaitOnCriticalSection+c5 00000000 00000000 4b66d376 ntdll!RtlEnterCriticalSection+152 6a6ee4e8 6a6b9ae6 00000000 isapi_redirect!TerminateFilter+c24b 00000000 00000000 76bbcc54 isapi_redirect+9ae6 01459180 4b66d376 00000000 isapi_redirect!TerminateFilter+21435 00000000 10000000 01b6dd18 isapi_redirect!HttpExtensionProc+29c 00000000 732448ee 73243b7a iisutil!STRU::STRU+c 73243b7a 0157e69c 7327a93f nativerd!CONFIG_ELEMENT::ReferenceConfigElement+f 000cf7f0 00000000 7327a970 nativerd!CONFIG_ELEMENT_LIST::GetMergedElement+483 73243e08 0157eaa8 00000000 0x0157e68c 00000000 00000000 00000000 NTDLL!RTLPWAITONCRITICALSECTION+C5In w3wp__PID__5276__Date__02_01_2010__Time_01_13_27PM__226__Second_Chance_Excep tion_C0000005.dmp the assembly instruction at ntdll!RtlpWaitOnCriticalSection+c5 in C:\Windows\System32\ntdll.dll from Microsoft Corporation has caused an access violation exception (0xC0000005) when trying to write to memory location 0x00000014 on thread 5 Module Information Image Name: C:\Windows\System32\ntdll.dll Base address: 0x76fc0000 Checksum: 0x00135d86 COM DLL: False ISAPIExtension: False ISAPIFilter: False Managed DLL: False VB DLL: False Loaded Image Name: ntdll.dll Mapped Image Name: Module name: ntdll Single Threaded: False Module Size: 1.15 MBytes Symbol File Name: c:\symcache\ntdll.pdb\B958B2F91A5A46B889DAFAB4D140CF252\ntdll.pdb Symbol Type: PDB Time Stamp: Sat Jan 19 07:32:54 2008 Comments: Company Name: Microsoft Corporation File Description: NT Layer DLL File Version: 6.0.6001.18000 (longhorn_rtm.080118-1840) Internal Name: ntdll.dll Legal Copyright: C Microsoft Corporation. All rights reserved. Legal Trademarks: Original filename: ntdll.dll Private Build: Product Name: MicrosoftR WindowsR Operating System Product Version: 6.0.6001.18000 Special Build: & There is nothing obvious in Process Monitor which explains what is causing the error. Do any of you have any ideas what could be causing this? Any advice would be greatly appreciated. Cheers Steve
