Microsoft KB Archive/171996

= Winsock Function Calls Generate Non-Paged Pool Memory Leak =

Article ID: 171996

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Server 4.0, Terminal Server Edition
 * Microsoft Windows NT Workstation 3.51
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 3.51
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q171996



SYMPTOMS
If Winsock function calls are called in a tight loop such that a client application communicates with a local server executing a call sequence similar to

socket, setsockopt, connection, send, closesocket

a nonpaged pool memory leak may occur.



CAUSE
Because the internal I/O-completion APC routines did not get a chance to run, the result was a non-paged pool memory leak.



RESOLUTION
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

152734 How to Obtain the Latest Windows NT 4.0 Service Pack



STATUS
Microsoft has confirmed this to be a problem in Windows NT version 3.51. A supported fix is now available, but has not been fully regression tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Technical Support for more information.

Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.

Additional query words: prodnt

Keywords: kbhotfixserver kbqfe kbapi kbbug kbfix kbnetwork kbui kbwinsock KB171996

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