Article ID: 223415
Article Last Modified on 10/19/2006
APPLIES TO
- Microsoft SNA Server 4.0
This article was previously published under Q223415
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.
RESOLUTION
To resolve this problem, obtain the latest service pack for SNA Server version 4.0. For more 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 Microsoft SNA Server, Versions 4.0, 4.0 Service Pack 1, 4.0 Service Pack 2. 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)
Keywords: kbhotfixserver kbbug kbfix kbqfe kbsna400sp3fix KB223415
