Microsoft KB Archive/164409

= Stop 0x0000000A in Tcpip.sys Caused by Invalid Fragment Bit =

Article ID: 164409

Article Last Modified on 11/1/2006

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APPLIES TO


 * 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 Q164409



SYMPTOMS
A computer running Windows NT may display one of the following blue screen STOP error messages while it processes a datagram packet:

STOP 0x0000000A IRQL_NOT_LESS_OR_EQUAL

-or-

STOP 0x00000019 BAD_POOL_HEADER



CAUSE
A router incorrectly set the packet fragmentation bit on a browser broadcast datagram packet. The Tcpip.sys driver attempts to reassemble this packet and causes pool memory corruption.



RESOLUTION
To resolve this problem, obtain the fix mentioned below. The new Tcpip.sys driver will now check the length field on the packet to prevent it from processing fragments that do not exist.



STATUS
Microsoft has confirmed this to be a problem in Windows NT version 4.0. This problem was corrected in the latest Microsoft Windows NT 4.0 U.S. Service Pack. 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

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.

Additional query words: 0x19 0xa 0x0a

Keywords: kbbug kbfix KB164409

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