Memory Leak in Ntfs.sys

• Microsoft Windows NT Workstation version 4.0
• Microsoft Windows NT Server version 4.0
• Microsoft Windows NT Server version 4.0, Terminal Server Edition

SYMPTOMS

A system will leak pageable memory when a large amount of mounts and dismounts are done on an NTFS partition.

CAUSE

The driver Ntfs.sys was not releasing memory acquired on a mount request on a dismount request. The memory leak is small, so the problem will usually show up after a period of days. Poolmon can be used to check this problem. Look for FSrtl tag taking up a lot of the pageable memory. Performance Monitor can also be used to monitor pageable memory use.

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, please see the following article in the Microsoft Knowledge Base:

Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack

STATUS

Microsoft has confirmed this to be 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.

Keywords : NT4SP4Fix ntstop kbbug4.00 kbDriver ntdriver kbfix4.00.sp4 NTSrvWkst
Version : WinNT:4.0
Platform : winnt
Issue type : kbbug