https://issues.apache.org/bugzilla/show_bug.cgi?id=54117
Priority: P2
Bug ID: 54117
Assignee: dev@tomcat.apache.org
Summary: access violation exception in isapi_redirect.dll
Severity: major
Classification: Unclassified
Reporter: werner.pe...@charteredaccountants.com.au
Hardware: PC
Status: NEW
Version: 1.2.37
Component: isapi
Product: Tomcat Connectors
Problem: access violation exception in isapi_redirect.dll.
Environment: Two front end IIS 7.5 web servers (Windows 2008 R2 SP1) in DMZ
redirecting to an application server through isapi_redirect. The website on the
web servers is protected by Siteminder 12.0SP2 (an ISAPI filter).
Description:
The worker processes on the web servers crash multiple times a day, often
within minutes of the previous crash, with either "Faulting module name:
isapi_redirect.dll, version: 1.2.37.0" or "Faulting module name: msvcrt.dll,
version: 7.0.7601.17744."
The stack traces for the crash dumps vary slightly:
1.
isapi_redirect!GetExtensionVersion+7bf2
isapi_redirect+74eb
isapi_redirect+d726
isapi_redirect!GetExtensionVersion+3161
isapi_redirect!HttpExtensionProc+541
2.
msvcrt!_ascii_stricmp+3
msvcrt!stricmp+43
isapi_redirect!GetExtensionVersion+e69
isapi_redirect!GetExtensionVersion+10b8
isapi_redirect!GetExtensionVersion+2d6c
isapi_redirect!HttpExtensionProc+541
3.
isapi_redirect+6dea
isapi_redirect+7420
isapi_redirect+d726
isapi_redirect!GetExtensionVersion+3161
isapi_redirect!HttpExtensionProc+541
The current log_level of info does not provide any usefull information, and the
information I've found indicate that a log_level of trace will severely impact
performance?
Attached are the minidumps and crash dump analysis generated by the "Debug
Diagnostics Tool".
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