Q245453: TN3270 Server Access Violation in Mngext!MngDeleteObject()
Article: Q245453
Product(s): Microsoft SNA Server
Version(s): WINDOWS:4.0,4.0 SP1,4.0 SP2,4.0 SP3
Operating System(s):
Keyword(s): kbDSupport kbSNA400sp4fix kbSNA400PreSP4fix
Last Modified: 13-JUN-2001
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The information in this article applies to:
- Microsoft SNA Server, versions 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3
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SYMPTOMS
========
The SNA Server TN3270 Server process (Tn3servr.exe) may fail unexpectedly with
an access violation in routine mngext!MngDeleteObject. If Drwtsn32.exe is
configured as the default debugger, a Drwtsn32.log file will be created and will
include the following failure information:
Application exception occurred:
App: exe\tn3servr.dbg (pid=process id)
When: (date and time)
Exception number: c0000005 (access violation)
[...]
State Dump for Thread Id (thread)
eax=00000000 ebx=00000000 ecx=00000000 edx=0ca40440 esi=0c9fff98 edi=00243160
eip=60a01dd7 esp=0c9fff78 ebp=77f67500 iopl=0 nv up ei pl zr na po nc
cs=001b ss=0023 ds=0023 es=0023 fs=0038 gs=0000 efl=00000246
function: MngDeleteObject
60a01db8 59 pop ecx
60a01db9 c20800 ret 0x8
60a01dbc 6a00 push 0x0
60a01dbe 8d44240c lea eax,[esp+0xc]
60a01dc2 6a00 push 0x0
60a01dc4 50 push eax
60a01dc5 8bcf mov ecx,edi
60a01dc7 c70600000000 mov dword ptr [esi],0x0
60a01dcd ff15d010a060
call dword ptr [_imp_?GetNotify (60a010d0)]
60a01dd3 8b4c2408 mov ecx,[esp+0x8]
FAULT ->60a01dd7 8b11 mov edx,[ecx]
60a01dd9 ff5220 call dword ptr [edx+0x20]
60a01ddc 5f pop edi
60a01ddd 5e pop esi
60a01dde 59 pop ecx
60a01ddf c20800 ret 0x8
*---- Stack Back Trace ----*
FramePtr ReturnAd Param#1 Param#2 Param#3 Param#4 Function Name
77f67500 8b000000 83042454 7500147a 42ff904f 8b197504 mngext!MngDeleteObject
CAUSE
=====
The management status reporting interface running underneath the TN3270 server
was attempting to delete an object after it had already been freed, causing an
access violation.
RESOLUTION
==========
To resolve this problem, obtain the latest service pack for SNA Server 4.0. For
additional information, please see the following article in the Microsoft
Knowledge Base:
Q215838 How to Obtain the Latest SNA Server Version 4.0 Service Pack
STATUS
======
Microsoft has confirmed this to be a problem in SNA Server 4.0 Service Pack 1,
Service Pack 2, and Service Pack 3.
This problem was first corrected in SNA Server 4.0 Service Pack 4.
Additional query words:
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Keywords : kbDSupport kbSNA400sp4fix kbSNA400PreSP4fix
Technology : kbAudDeveloper kbSNAServSearch kbSNAServ400 kbSNAServ400SP1 kbSNAServ400SP2 kbSNAServ400SP3
Version : WINDOWS:4.0,4.0 SP1,4.0 SP2,4.0 SP3
Issue type : kbbug
Solution Type : kbfix
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