Microsoft KB Archive/819764

= Trap Occurs in the snaservr!s1pnsuns Function =

Article ID: 819764

Article Last Modified on 10/5/2005

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APPLIES TO


 * Microsoft SNA Server 4.0 Service Pack 4

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SYMPTOMS
When SNA Server 4.0 is running, a trap may occur in the snaservr!s1pnsuns function. A Dr. Watson log file may show data that is similar to the following: State Dump for Thread Id 0x6bd

eax=01190000 ebx=00000030 ecx=00000000 edx=00000000 esi=01d3d864 edi=00000079 eip=010549cf esp=00bafe64 ebp=01d3d864 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: s1pnsuns 010549a0 6683ff77        cmp     di,0x77 010549a4 0f84e8020000    je      s1pnsuns+0x9d2 (01054c92) 010549aa 6683ff78        cmp     di,0x78 010549ae 0f84de020000    je      s1pnsuns+0x9d2 (01054c92) 010549b4 6683ff73        cmp     di,0x73 010549b8 0f84d4020000    je      s1pnsuns+0x9d2 (01054c92) 010549be 8b442424        mov     eax,[esp+0x24]         ss:01e0e86b=???????? 010549c2 25ffff0000      and     eax,0xffff 010549c7 8d1440          lea     edx,[eax+eax*2]        ds:01190000=01110100 010549ca a1d0691801      mov     eax,[sct (011869d0)]   ds:011869d0=01190000 FAULT ->010549cf 8b4cd0ec        mov     ecx,[eax+edx*8-0x14]   ds:0125ea07=00000000 010549d3 894c241c        mov     [esp+0x1c],ecx         ss:01e0e86b=???????? 010549d7 8b54d0f0        mov     edx,[eax+edx*8-0x10]   ds:0125ea07=00000000 010549db 8d44241c        lea     eax,[esp+0x1c]         ss:01e0e86b=???????? 010549df 50              push    eax 010549e0 56              push    esi 010549e1 89542428        mov     [esp+0x28],edx         ss:01e0e86b=???????? 010549e5 e85685ffff      call    s1pnsdpn (0104cf40) 010549ea 6683ff76        cmp     di,0x76 010549ee 7548            jnz     s1pnsuns+0x778 (01054a38) 010549f0 8b5c2438        mov     ebx,[esp+0x38]         ss:01e0e86b=???????? 010549f4 0fbf4b0a        movsx   ecx,word ptr [ebx+0xa]     ds:0125ea37=0000


 * > Stack Back Trace <*

FramePtr ReturnAd Param#1 Param#2  Param#3  Param#4  Function Name 01d3d864 00100001 11000b00 00000000 00000000 9b600004 snaservr!s1pnsuns (FPO: [EBP 0x00000000] [1,59,4])



CAUSE
The trap occurs when the SNA Server service (Snaservr.exe) receives a Close(SSCP) request for a session control block that is being used by a SSCP-PU session. The SNA Server service then issues a NOTIFY message on this session. The mainframe rejects the NOTIFY message with an 0x0826 message, and the trap occurs while the SNA Server service tries to build a CSI status message to send to the SNA Manager.



RESOLUTION
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next SNA Server 4.0 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.   Date         Time   Version       Size  File name 16-May-2003 11:35  4.0.0.607  468,864  Snaservr.exe 16-May-2003 11:35  4.0.0.607  936,368  Trcservr.exe Note Because of file dependencies, the most recent fix that contains these files may also contain additional files.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Keywords: kbbug kbfix kbqfe KB819764

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