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
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The information in this article applies to:
- Microsoft SNA Server, versions 4.0, 4.0SP1, 4.0SP2
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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:
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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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