Article ID: 184549
Article Last Modified on 5/23/2003
APPLIES TO
- Microsoft SNA Server 3.0
- Microsoft SNA Server 2.11 Service Pack 1
- Microsoft SNA Server 2.11 Service Pack 2
- Microsoft SNA Server 3.0 Service Pack 4
- Microsoft SNA Server 4.0
- Microsoft SNA Server 3.0 Service Pack 2
- Microsoft SNA Server 3.0 Service Pack 3
- Microsoft SNA Server 4.0
This article was previously published under Q184549
SYMPTOMS
The SNA Server service may fail unexpectedly, resulting in an application exception on function s1ppcass(). When this occurs, an <ntroot>\drwtsn32.log file may be created, indicating a "FAULT" in the following routine:
Application exception occurred:
App: exe\snaservr.dbg (pid= <process ID>)
Exception number: c0000005 (access violation)
[...]
function: s1ppcass
01050c92 8b4924 mov ecx,[ecx+0x24]
ds:0130ea06=????????
01050c95 80491804 or byte ptr [ecx+0x18],0x4
ds:0130ea06=??
01050c99 8b14b5bcb00b01
ds:00000325=????????
mov edx,[s1rcb+0xe25c
(010bb0bc)+esi*4]
01050ca0 33ff xor edi,edi
01050ca2 894228 mov [edx+0x28],eax
ds:02c70f82=????????
01050ca5 eb4e jmp s1ppcass+0x1d5
(01050cf5)
01050ca7 8b0cb5bcb00b01
ds:00000325=????????
mov ecx,[s1rcb+0xe25c
(010bb0bc)+esi*4]
01050cae 33ff xor edi,edi
01050cb0 57 push edi
01050cb1 8b4928 mov ecx,[ecx+0x28]
ds:0130ea06=????????
FAULT ->01050cb4 8911 mov [ecx],edx
ds:00000000=????????
01050cb6 8b14b5bcb00b01
ds:00000325=????????
mov edx,[s1rcb+0xe25c
(010bb0bc)+esi*4]
01050cbd 894228 mov [edx+0x28],eax
ds:02c70f82=????????
01050cc0 8b04b5bcb00b01
ds:00000325=????????
mov eax,[s1rcb+0xe25c
(010bb0bc)+esi*4]
01050cc7 8b4c2414 mov ecx,[esp+0x14]
ss:0249e913=????????
01050ccb 8b4024 mov eax,[eax+0x24]
ds:02c70f82=????????
01050cce 8a5108 mov dl,[ecx+0x8]
ds:0130ea06=??
01050cd1 8a4808 mov cl,[eax+0x8]
ds:02c70f82=??
01050cd4 02ca add cl,dl
01050cd6 8d542414 lea edx,[esp+0x14]
ss:0249e913=????????
01050cda 884808 mov [eax+0x8],cl
ds:02c70f82=??
01050cdd 8b442414 mov eax,[esp+0x14]
ss:0249e913=????????
*----> Stack Back Trace <----*
FramePtr ReturnAd Param#1 Param#2 Param#3 Param#4 Function
Name
00000020 00000000 00000000 00000000 00000000 00000000
snaservr!s1ppcass
(FPO: [EBP 0x00000000] [3,1,4])
00000034 00000000 00000000 00000000 00000000 00000000
snaservr!<nosymbols>
CAUSE
The application exception in Snaservr.exe occurs if SNA Server receives a Request Unit (RU) marked MC (Middle Chain) that contains no actual data. The SNA Server service does not correctly handle this occurrence, resulting in the application exception shown above.
RESOLUTION
SNA Server 3.0
To resolve this problem, obtain the latest service pack for SNA Server version 3.0. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
184307 How to Obtain the Latest SNA Server Version 3.0 Service Pack
SNA Server 4.0
This problem has been corrected in the latest U.S. Service Pack for SNA Server version 4.0. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):
S E R V P A C K
STATUS
Microsoft has confirmed that this is a problem in SNA Server, versions 2.11, 2.11 SP1,2.11 SP2, 3.0, 3.0SP1, 3.0 SP2, 3.0 SP3, and 4.0. This problem was first corrected in SNA Server 3.0 Service Pack 4.
Keywords: kbbug kbfix KB184549
