Application Exception When AppleTalk Clients Try Connecting (147712)

SYMPTOMS

The SNA Server stops responding (hangs) and Appletalk client computers are unable to attain session connections. In the Event Viewer, the following application events appear:

Event ID: 624
Source: SNADUMP.LOG
Description: A process SNABASE.EXE ended abnormally due to a protection violation, or similar condition.

Event ID: 4097
Source: Dr. Watson Log
This application, SNABASE.DBG generated an applicaiton error. The error
occurred on <date>. The exception generated was C0000005 at address <address>.

A portion of the DRWTSN32.LOG file states the following:

   App: snabase.DBG (pid=160)
        When: <date> @ <time>
        Exception number: c0000005 (access violation)

NOTE: Your DRWTSN32.LOG file will appear somewhat different than this example.

CAUSE

The SNAAT.DLL send routine is not checking to see if the L-Table is already in a closing state. Therefore, it tries to access its pending queue, which has been released. This causes the application exception in SNABASE.EXE.

STATUS

Microsoft has confirmed this to be a problem in SNA Server version 2.11 and 2.11 Service Pack 1. This problem was corrected in the latest Microsoft SNA Server 2.11 U.S. Service Pack. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K