Article ID: 825800
Article Last Modified on 10/26/2005
APPLIES TO
- Microsoft Host Integration Server 2000 Standard Edition
- Microsoft Host Integration Server 2000 Service Pack 1
- Microsoft SNA Server 4.0
- Microsoft SNA Server 4.0 Service Pack 1
- Microsoft SNA Server 4.0 Service Pack 2
- Microsoft SNA Server 4.0 Service Pack 3
- Microsoft SNA Server 4.0 Service Pack 4
SYMPTOMS
A Logical Unit Application (LUA) application may quit unexpectedly and cause all existing host sessions that are in use by the application to end.
If the Drwtsn32.exe program is configured as the default debugger on the system, the Drwtsn32.log file may be updated with an entry similar to the following when the access violation occurs:
Application exception occurred:
App: (pid=process ID)
When: date @ time
Exception number: c0000005 (access violation)
function: RUI_write_lu
642039bd 6a00 push 0x0
642039bf e8bcd8ffff call PreAsyncTrace (64201280)
642039c4 83c408 add esp,0x8
642039c7 8b7328 mov esi,[ebx+0x28] ds:00daf85e=????????
642039ca 8b7c241c mov edi,[esp+0x1c] ss:0dbf9c7f=????????
642039ce 33c9 xor ecx,ecx
642039d0 8b442418 mov eax,[esp+0x18] ss:0dbf9c7f=????????
642039d4 668b4b02 mov cx,[ebx+0x2] ds:00daf85f=????
642039d8 8bd1 mov edx,ecx
642039da c1e902 shr ecx,0x2
FAULT ->642039dd f3a5 rep movsd ds:00338fff=???????? es:01d6e6c5=f0f0f1f3
642039df 8bca mov ecx,edx
642039e1 83e103 and ecx,0x3
642039e4 f3a4 rep movsb ds:00338fff=00 es:01d6e6c5=f3
642039e6 8b4804 mov ecx,[eax+0x4] ds:01def57a=????????
642039e9 8b742418 mov esi,[esp+0x18] ss:0dbf9c7f=????????
642039ed 8b01 mov eax,[ecx] ds:00000001=????????
642039ef 668b5004 mov dx,[eax+0x4] ds:01def57b=????
642039f3 66035326 add dx,[ebx+0x26] ds:00daf85f=????
642039f7 4a dec edx
642039f8 66895006 mov [eax+0x6],dx ds:01def57b=????
642039fc 8b44241c mov eax,[esp+0x1c] ss:0dbf9c7f=????????
*----> Stack Back Trace <----*
FramePtr ReturnAd Param#1 Param#2 Param#3 Param#4 Function Name
642373A8 00000000 00000000 00000000 00000000 003358AC winrui32!RUI_write_lu
CAUSE
This problem occurs because the RUI library (Winrui32.dll) copies too much data from the data buffer of a LUA application while writing a BIND +RSP for a negotiable BIND request. This results in the access violation in the RUI_WRITE_LU function.
RESOLUTION
Service pack information
To resolve this problem, obtain the latest service pack for Microsoft Host Integration Server 2000. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
328152 How to obtain the latest service pack for Host Integration Server 2000
Hotfix information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
Date Time Version Size File name
--------------------------------------------------
30-Jul-2003 16:04 5.0.0.930 123,152 Winrui32.dll
Note Because of file dependencies, the most recent fix that contains the preceding files may also contain additional files.
STATUS
Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the "Applies to" section.
This problem was corrected in Microsoft Host Integration Server 2000 Service Pack 2.
MORE INFORMATION
The access violation may occur only if the LUA application is using a negotiable BIND to activate host sessions. Most applications that use dependent logical units (LUs) use non-negotiable BIND requests when activating sessions. Dependent LUs include LU0 (LUA), LU1, LU2, and LU3.
Keywords: kbbug kbfix kbqfe kbhotfixserver KB825800
