Q286168: Application Exception in Snalink!UpdateDLSData
Article: Q286168
Product(s): Microsoft SNA Server
Version(s): 3.0 (all SP),4.0,4.0 SP1,4.0 SP2,4.0 SP3,4.0 SP4
Operating System(s):
Keyword(s): kbDSupport kbsna300sp1 kbsna300sp2 kbsna300sp3 kbsna300sp4 sna4 kbsna400sp1 kbsna400sp2
Last Modified: 08-MAY-2002
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The information in this article applies to:
- Microsoft SNA Server, versions 3.0 SP1, 3.0 SP2, 3.0 SP3, 3.0 SP4, 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3, 4.0 SP4
- Microsoft Host Integration Server 2000
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SYMPTOMS
========
SNA Server or Host Integration Server 2000 systems being used to distribute DLC
802.2 link services for use by branch SNA Servers and/or Host Integration 2000
servers in a Distributed Link Service (DLS) environment may experience an
application exception in Snalink!UpdateDLSData.
NOTE: The problem only occurs when a DLS connection terminates unexpectedly.
Therefore, the Application Event log may contain events normally associated with
connection outages prior to the application exception. Common connection outage
events logged by SNA Server/HIS 2000 include the following events: 23, 227, 226.
CAUSE
=====
The application exception occurs when a NULL message pointer is passed into the
UpdateDLSData function.
RESOLUTION
==========
SNA Server 4.0
--------------
A supported fix is now available from Microsoft, but it is only intended to
correct the problem described in this article and should be applied only to
systems experiencing this specific problem. This fix may receive additional
testing at a later time, to further ensure product quality. Therefore, if you
are not severely affected by this problem, Microsoft recommends that you wait
for the next Microsoft SNA Server version 4.0 service pack that contains this
fix.
To resolve this problem immediately, contact Microsoft Product Support Services
to obtain the fix. For a complete list of Microsoft Product Support Services
phone numbers and information about support costs, please go to the following
address on the World Wide Web:
http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS
NOTE: In special cases, charges that are normally incurred for support calls may
be canceled, if a Microsoft Support Professional determines that a specific
update will resolve your problem. Normal support costs will apply to additional
support questions and issues that do not qualify for the specific update in
question.
The English version of this fix should have the following file attributes or
later:
+-----------------------------------+
| File name | Date | Time |
+-----------------------------------+
| Snadlc.dll | 01/26/2001 | 09:13AM |
+-----------------------------------+
NOTE: Because of file dependencies, the most recent fix that contains the above
files may also contain additional files.
Host Integration Server 2000
----------------------------
A supported fix is now available from Microsoft, but it is only intended to
correct the problem described in this article and should be applied only to
systems experiencing this specific problem. This fix may receive additional
testing at a later time, to further ensure product quality. Therefore, if you
are not severely affected by this problem, Microsoft recommends that you wait
for the next Microsoft Host Integration Server 2000 service pack that contains
this fix.
To resolve this problem immediately, contact Microsoft Product Support Services
to obtain the fix. For a complete list of Microsoft Product Support Services
phone numbers and information about support costs, please go to the following
address on the World Wide Web:
http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS
NOTE: In special cases, charges that are normally incurred for support calls may
be canceled, if a Microsoft Support Professional determines that a specific
update will resolve your problem. Normal support costs will apply to additional
support questions and issues that do not qualify for the specific update in
question.
The English version of this fix should have the following file attributes or
later:
+-----------------------------------+
| File name | Date | Time |
+-----------------------------------+
| Snadlc.dll | 01/26/2001 | 09:13AM |
+-----------------------------------+
NOTE: Because of file dependencies, the most recent fix that contains the above
files may also contain additional files.
STATUS
======
Microsoft has confirmed this to be a problem in Microsoft SNA Server versions
3.0 (all Service Packs [SPs]), 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3, 4.0 SP4, and Host
Integration Server 2000.
MORE INFORMATION
================
If DRWTSN32.exe is configured as the default debugger, information similar to
the following is added to the DRWTSN32.LOG when this application exception
occurs:
Application exception occurred:
App: exe\snalink.dbg (pid=89)
When: 12/5/2000 @ 19:8:42.58
Exception number: c0000005 (access violation)
[data omitted...]
6338917d 7fec jg UpdateDLSData+0x8b (6338916b)
6338917f a17c1a3963 mov eax,[DlsData+0x344 (63391a7c)] ds:63391a7c=63391a80
63389184 6840173963 push 0x63391740
63389189 50 push eax
6338918a 6849173963 push 0x63391749
6338918f ffd3 call ebx
63389191 83c40c add esp,0xc
63389194 c7053817396300000000 ds:63391738=00000000
mov dword ptr [DlsData (63391738)],0x0
6338919e 8bb42420010000 mov esi,[esp+0x120] ss:00baff0c=63387d83
633891a5 6849183963 push 0x63391849
FAULT ->633891aa 660fb64e0a movzx cx,byte ptr [esi+0xa] ds:0161ea08=??
633891af 51 push ecx
633891b0 e84f350000 call GetClientWorkstationName (6338c704)
633891b5 85c0 test eax,eax
633891b7 0f84cd010000 je UpdateDLSData+0x2aa (6338938a)
633891bd 8d542414 lea edx,[esp+0x14] ss:021ce7f3=????????
633891c1 52 push edx
633891c2 6a03 push 0x3
633891c4 6a00 push 0x0
633891c6 6849173963 push 0x63391749
633891cb 6802000080 push 0x80000002
633891d0 ff1500103863 ds:63381000=77dd992e
call dword ptr [_imp__RegOpenKeyExA (63381000)]
In addition, an event similar to the following will be logged in the Application
Event Log:
Event ID: 624
Source: SNA Server
Description: Creating dump file D:\sna\traces\snadump.log for snalink.exe
Additional query words:
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Keywords : kbDSupport kbsna300sp1 kbsna300sp2 kbsna300sp3 kbsna300sp4 sna4 kbsna400sp1 kbsna400sp2 kbsna400sp3 kbhis2000 kbsna400sp4
Technology : kbAudDeveloper kbSNAServSearch kbHostIntegServ2000 kbSNAServ400 kbSNAServ300SP3 kbSNAServ300SP1 kbSNAServ400SP1 kbSNAServ400SP2 kbSNAServ400SP3 kbSNAServ400SP4 kbSNAServ300SP2 kbSNAServ300SP4
Version : :3.0 (all SP),4.0,4.0 SP1,4.0 SP2,4.0 SP3,4.0 SP4
Issue type : kbbug
Solution Type : kbfix
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