SNA Server Access Violation (0xC0000005) in s1pupcds()

 Last reviewed: April 17, 1997
Article ID: Q152203

The information in this article applies to:
  • Microsoft SNA Server for Windows NT, versions 2.11 and 2.11 Service Pack 1

SYMPTOMS

SNA Server versions 2.11 and 2.11 Service Pack 1 (SNASERVR.EXE) encounter an access violation (0xC0000005) when started. Therefore, an Event 624 is logged in the Windows NT application event log.

The stack trace of the failing thread is as follows: 

FramePtr  RetAddr   Param1   Param2   Param3   Function Name
002cff10 003c2436 000011f9 00000004 0043e798 SNASERVR!s1pupcds+0xc8 002cff38 003f956d 00000000 00000000 00000004 SNASERVR!s1pucsc+0x56 002cff60 003d41f4 00403fe3 0000000b 002cffec SNASERVR!s1pusvc+0x4d 002cff64 00403fe3 0000000b 002cffec 000528d8 SNASERVR!s1pgdisp+0x64 002cff80 00404785 00cb11cc 00000001 000528d8 SNASERVR!sbpsched+0xe3 002cff84 00cb11cc 00000001 000528d8 00000000 SNASERVR!sbpgmain+0x25 002cffa8 77e31461 00000001 000528d8 00000000 SNASVC!ServiceMainFunction+0x12c 002cffb8 77f26c2a 000528d0 00000000 00000000 ADVAPI32!ScSvcctrlThreadA+0xe 002cffec 00000000 77e31453 000528d0 00000000 KERNEL32!BaseThreadStart+0x61

This server was configured with multiple 802.2 connections to the same host system, and at least one of the connections may have been trying to activate when the problem occurred. The customer reported that they needed to reboot their Compaq Proliant dual-processor machine in order to get their IBM 16/4 II adapter to initialize properly, possibly due to transient media problems on their Token Ring LAN.

CAUSE

The SNA Server dump file indicated that the SNA Server service tried to free a session control block which had already been freed.

RESOLUTION

An SNA Server 2.11 hotfix to this problem is available through Microsoft product support. The problem has also been fixed in SNA Server 3.0.

STATUS

Microsoft has confirmed this to be a problem in Microsoft SNA Server 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

Additional query words: sp1 prodsna
Keywords : kbbug2.11 kbbug2.11.sp1 kbfix2.11.sp2 kbnetwork
Version : 2.11 2.11.sp1
Platform : NT WINDOWS
Issue type : kberrmsg

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Last reviewed: April 17, 1997
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