Microsoft KB Archive/898555

= FIX: A computer that uses the IP-DLC link service to communicate with an IBM mainframe may experience an access violation in snaipdlc!nrt_rtp_status_check_gaps function on Host Integration Server 2004 =

Article ID: 898555

Article Last Modified on 12/4/2007

-

APPLIES TO


 * Microsoft Host Integration Server 2004 Standard Edition

-





SYMPTOMS
A computer that is running Microsoft Host Integration Server 2004 and that uses the IP-DLC link service to communicate with an IBM mainframe may experience an access violation in snaipdlc!nrt_rtp_status_check_gaps function.

When this problem occurs, the IP-DLC link service unexpectedly quits. Therefore, all connected users lose their existing host sessions if the host sessions were established over host connections or peer connections by using the IP-DLC link service.

Additionally, event messages that are similar to the following are logged: Event ID: 1000

Source: Application Error

Description: Faulting application snalink.exe, version, faulting module snaipdlc.dll, version  , fault address

Event ID: 624

Source: SNA Server

Description: Creating dump file C:\Program Files\Microsoft Host Integration Server\traces\snadump.log for snalink.exe



CAUSE
The access violation occurs when the IP-DLC Link service receives duplicate empty High Performance Routing (HPR) Network Layer Packets (NLP) packets. The problem is likely to occur on a network that drops or delays packets when the packets travel between Host Integration Server 2004 and the Network Node Server (NNS).



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

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

File information
The English version of this hotfix has the file attributes (or later file attributes) 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 ---  29-Sep-2004  22:44  6.0.1906.0    959,488  Snaipdlc.dll 29-Sep-2004 22:44  6.0.1906.0    407,552  Snaservr.exe 29-Sep-2004 22:44  6.0.1906.0  2,944,512  Trcipdlc.dll 29-Sep-2004 22:44  6.0.1906.0    847,360  Trcservr.exe Note Because of file dependencies, the most recent hotfix 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 in the &quot;Applies to&quot; section.



Stack output
If Drwtsn32.exe is the system's default debugger and is configured to create a User.dmp file, the stack output that appears in the User.dmp file will be similar to the following when this problem occurs: eax=00b57bb0 ebx=70079519 ecx=00000000 edx=70078398 esi=80000000 edi=70073f09 eip=00646a1b esp=009fff00 ebp=0000448f iopl=0        nv up ei pl zr na po nc cs=001b  ss=0023  ds=0023  es=0023  fs=0038  gs=0000             efl=00000246 snaipdlc!nrt_rtp_status_check_gaps+0x1a3: 00646a1b 8b11            mov     edx,[ecx]         ds:0023:00000000=???????? 0:009> kb *** Stack trace for last set context - .thread/.cxr resets it ChildEBP RetAddr  Args to Child 009fff14 00647283 0000050f 00a83c30 009fff4c snaipdlc!nrt_rtp_status_check_gaps+0x1a3 009fff30 00647ed8 00a83c30 00b57e21 00000000 snaipdlc!nrt_rtp_status_receive+0x4af 009fff4c 0062064b 00a83c30 00000008 00000000 snaipdlc!nrt_rtp_arb_receive+0x149 009fff68 0062098d 0000050f 00000000 00abff60 snaipdlc!nrt_rtp_receive+0x377 009fff7c 0060dfa6 00a83c30 00000008 00000011 snaipdlc!nrt_receive_proc+0x8d 009fff90 0060e322 00000008 00a83c30 009fffec snaipdlc!nba_dispatch_process+0x95 009fffac 0060d6fe 00000000 0060d79a 77e4a990 snaipdlc!nba_scheduler+0x7d 009fffb4 0060d79a 77e4a990 00000000 00000000 snaipdlc!nba_spin+0x14 009fffb8 77e4a990 00000000 00000000 00000000 snaipdlc!spinner_thread+0x26 009fffec 00000000 0060d774 00000000 00000000 kernel32!BaseThreadStart+0x34 [d:\srv03rtm\base\win32\client\support.c @ 533]

Keywords: kbbug kbfix kbqfe kbpubtypekc kbhotfixserver KB898555

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.