Microsoft KB Archive/245453

= TN3270 Server Access Violation in Mngext!MngDeleteObject =

Article ID: 245453

Article Last Modified on 11/24/2003

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APPLIES TO


 * Microsoft SNA Server 4.0
 * Microsoft SNA Server 4.0 Service Pack 1
 * Microsoft SNA Server 4.0 Service Pack 2
 * Microsoft SNA Server 4.0 Service Pack 3

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This article was previously published under Q245453



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, click the following article number to view the article in the Microsoft Knowledge Base:

215838 How to Obtain the Latest SNA Server Version 4.0 Service Pack



STATUS
Microsoft has confirmed that this is 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.

Keywords: kbbug kbfix kbsna400presp4fix kbqfe kbsna400sp4fix KB245453

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