Microsoft KB Archive/170660

= SNA 3.0 SP1 TN3270 Server Access Violation in SetBestGroups =

Article ID: 170660

Article Last Modified on 6/24/2004

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APPLIES TO


 * Microsoft SNA Server 4.0

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This article was previously published under Q170660





SYMPTOMS
When a TN3270E print emulator attempts to open a printer session through the SNA Server 3.0 Service Pack 1 TN3270 Server, the TN3270 server may encounter the following access violation:

  Application exception occurred: App: tn3servr.DBG (pid= ) Exception number: c0000005 (access violation)

[data omitted]

function: SetBestGroups

FAULT ->01012c07 8b4804    mov  ecx,[eax+0x4]   ds:0068e922=????????



CAUSE
This is caused by a problem in the SNA Server 3.0 Service Pack 1 TN3270 server, which was introduced by the addition of support for multiple ports.



STATUS
Microsoft has confirmed this to be a problem in SNA Server version 3.0 Service Pack 1. This problem was corrected in the latest SNA Server version 3.0 U.S. Service Pack. For information on obtaining this Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K



MORE INFORMATION
When this problem occurs, the stack back trace looks like the following:   *> Stack Back Trace <*

FramePtr ReturnAd Param#1 Param#2  Param#3  Param#4  Function Name 0ca5fc10 01013e60 00183230 0ca5fc34 001849a2 001833c8 tn3servr!SetBestGroups 0ca5fc98 0100faa8 00183230 001849a2 0ca5fcbc 001849a2 tn3servr!SRSGetSNAResourceFirst 0ca5fd54 010184e3 00183230 001849a2 00183888 00000010 tn3servr!SNAGenericSessionStart 0ca5fd70 010179b7 00183230 00183230 0101704b 00183230 tn3servr!TNTContinueDataFromNetwork 0ca5fd7c 0101704b 00183230 0ca5ff5c 0ca5fe3c 00183230 tn3servr!TNTContinueDataFromNetwork 0ca5fd94 01018580 00183230 010152b2 00183230 00000011 tn3servr!TNTContinueDataFromNetwork 0ca5fd9c 010152b2 00183230 00000011 0ca5fe3c 001837cc tn3servr!TNTDataFromNetwork 0ca5fe14 77f4f7c2 00000000 00000011 001837cc 7ffdf000 tn3servr!TCPRecv 0ca5fe28 77fb03bb 01015100 001837cc 00000000 00010017 kernel32! 0ca5ff5c 0100c876 00000003 0018d0b8 00000000 006ddcce ntdll!

Keywords: kbbug kbfix kbnetwork KB170660

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