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Q223415: Stop 0x0a in Ibmsync.sys at ibmsync!SyncPutDPCQueueTail+0x58

Article: Q223415
Product(s): Microsoft SNA Server
Version(s): WINDOWS:4.0,4.0SP1,4.0SP2
Operating System(s): 
Keyword(s): kbsna400sp3fixkbbuglist kbfixlist
Last Modified: 08-MAY-2002

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft SNA Server, versions 4.0, 4.0SP1, 4.0SP2 
-------------------------------------------------------------------------------

SYMPTOMS
========

Under heavy stress loads using a SDLC card with SNA Server, a blue screen error
message may be displayed in Windows NT. The blue screen indicates a Stop 0x0a in
Ibmsync.sys. This problem was found when stressing conversations across SDLC and
token ring links to the mainframe simultaneously. The problem was encounted when
using a Microgate Digital Services Adapter. The contents of the dump file are in
the More Information section of this article.

CAUSE
=====

There were two problems found causing the problem. The trap occurred because of
a logic error in the handling of hardware errors, which resulted in the driver
crashing. The hardware error was diagnosed as a problem with the Microgate SDLC
card not responding fast enough to the driver under heavy load.


For a related problem in the Ibmsync.sys driver, please see the following
Microsoft Knowledge Base article: Q172913 Server Stops with STOP 0xA in
Ibmsync.sys Driver Under Stress

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for SNA Server version
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 Microsoft SNA Server, Versions
4.0, 4.0sp1, 4.0sp2. This problem was first corrected in SNA Server version 4.0
Service Pack 3.

MORE INFORMATION
================

The following is an excerpt from the Windows NT crash dump file when this
problem occurred:

  kd> kv
  kv
  ChildEBP RetAddr  Args to Child
  8014d72c f730ba35 0000e407 000000b2 80063ffe ntkrnlmp!KiTrap0E+0x284 (FPO: [0,0] TrapFrame @ 8014d72c)
  8014d7a4 f730979d 806978b8 80686d88 80686fec ibmsync!SyncPutDPCQueueTail+0x58 (FPO: [1,0,2])
  8014d7c0 801449a2 80686d88 80697800 8014a402 ibmsync!EntryPointISR+0x29a (FPO: [EBP 0x80686d88] [2,1,4])
  8014d7c0 5024648c 80686d88 80697800 8014a402 ntkrnlmp!KiInterruptDispatch+0x32 (FPO: [0,2] TrapFrame @ 80686d88)
  8014d79c 806945a0 806978b8 f730979d 806978b8 0x5024648c [Stdcall: 0]
  kd> !trap 8014d72c
  !trap 8014d72c
  eax=00000000 ebx=00000001 ecx=00000000 edx=00000388 esi=806978b8 edi=00000000
  eip=f730ba35 esp=8014d7a0 ebp=00000005 iopl=0         nv up ei ng nz na pe nc
  vip=0    vif=0
  cs=0008  ss=0010  ds=0023  es=0023  fs=0030  gs=0000             efl=00010282
  ErrCode = 00000002
  f730ba35 89780c           mov     [eax+0xc],edi

  kd> !kv
  !kv
  ChildEBP RetAddr  Args to Child
  8014d7a4 f730979d 806978b8 80686d88 80686fec ibmsync!SyncPutDPCQueueTail+0x58
  8014d7c0 801449a2 80686d88 80697800 8014a402 ibmsync!EntryPointISR+0x29a
  8014d7c0 5024648c 80686d88 80697800 8014a402 ntkrnlmp!KiInterruptDispatch+0x32
  8014d79c 806945a0 806978b8 f730979d 806978b8 +0x5024648c

  kd> u ibmsync!EntryPointISR+0x20a ibmsync!EntryPointISR+0x29a
  u ibmsync!EntryPointISR+0x20a ibmsync!EntryPointISR+0x29a
  ibmsync!EntryPointISR+0x20a:
  f730970d 2500008844       and     eax,0x44880000
  f7309712 3d01ffb6e0       cmp     eax,0xe0b6ff01
  f7309717 0100             add     [eax],eax
  f7309719 00e8             add     al,ch
  f730971b 37               aaa
  f730971c 250000bbff       and     eax,0xffbb0000
  f7309721 0100             add     [eax],eax
  f7309723 008b46688b40     add     [ebx+0x408b6846],cl
  f7309729 54               push    esp
  f730972a 83c008           add     eax,0x8
  f730972d 50               push    eax
  f730972e e81d250000       call    ibmsync!READ_PORT_UCHAR (f730bc50)
  f7309733 a250bf30f7       mov     [ibmsync!LastWaitUntilStatus (f730bf50)],al
  f7309738 240a             and     al,0xa
  f730973a 3c08             cmp     al,0x8
  f730973c 7543             jnz     ibmsync!EntryPointISR+0x27e (f7309781)
  f730973e 6a01             push    0x1
  f7309740 59               pop     ecx
  f7309741 3bd9             cmp     ebx,ecx
  f7309743 7e14             jle     ibmsync!EntryPointISR+0x256 (f7309759)
  f7309745 ffb6e0010000     push    dword ptr [esi+0x1e0]
  f730974b e806250000       call   ibmsync!KeStallExecutionProcessor (f730bc56)
  f7309750 8bc3             mov     eax,ebx
  f7309752 4b               dec     ebx
  f7309753 85c0             test    eax,eax
  f7309755 75cd             jnz     ibmsync!EntryPointISR+0x221 (f7309724)
  f7309757 eb28             jmp     ibmsync!EntryPointISR+0x27e (f7309781)
  f7309759 8b4628           mov     eax,[esi+0x28]
  f730975c 56               push    esi
  f730975d ff4038           inc     dword ptr [eax+0x38]
  f7309760 8b4628           mov     eax,[esi+0x28]
  f7309763 ff4008           inc     dword ptr [eax+0x8]
  f7309766 894e18           mov     [esi+0x18],ecx
  f7309769 e8f1210000       call    ibmsync!SyncGetFreeQueueHead (f730b95f)
  f730976e 84c0             test    al,al
  f7309770 740f             jz      ibmsync!EntryPointISR+0x27e (f7309781)
  f7309772 8b86d0010000     mov     eax,[esi+0x1d0]
  f7309778 56               push    esi
  f7309779 c60001           mov     byte ptr [eax],0x1
  f730977c e85c220000       call    ibmsync!SyncPutDPCQueueTail (f730b9dd)
  f7309781 45               inc     ebp
  f7309782 83fd05           cmp     ebp,0x5
  f7309785 0f8c6bffffff     jl      ibmsync!EntryPointISR+0x1f3 (f73096f6)
  f730978b 83be4001000001   cmp     dword ptr [esi+0x140],0x1
  f7309792 750b             jnz     ibmsync!EntryPointISR+0x29c (f730979f)
  f7309794 56               push    esi
  f7309795 c60702           mov     byte ptr [edi],0x2
  f7309798 e840220000       call    ibmsync!SyncPutDPCQueueTail (f730b9dd)

Additional query words:

======================================================================
Keywords          : kbsna400sp3fix kbbuglist kbfixlist
Technology        : kbAudDeveloper kbSNAServSearch kbSNAServ400
Version           : WINDOWS:4.0,4.0SP1,4.0SP2
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

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