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Ks.sys Patch for Hyper Threading Crashes
Posted by Philipp Esselbach on: 06/24/2003 09:39 AM [ Print | 0 comment(s) ]
ipKonfig.com has posted a ks.sys patch file for those running Windows XP on Intel Pentium 4 Hyper Threading systems.
SYMPTOMS
Ks.sys may crash if you repeatedly start and stop a Hauppauge playback graph on a computer with an Intel CPU that uses Hyper-Threading technology.
CAUSE
I/O request packets (IRPs) are completed on the pending queues without being called back. The routine does not undo the preparation for the request. That causes resources to leak. The data buffer address for data SRBs is not restored to the correct address from the mapped address. Therefore, the FreeFrame routine calls the wrong address when the frames are freed from the allocator.
Ks.sys may crash if you repeatedly start and stop a Hauppauge playback graph on a computer with an Intel CPU that uses Hyper-Threading technology.
CAUSE
I/O request packets (IRPs) are completed on the pending queues without being called back. The routine does not undo the preparation for the request. That causes resources to leak. The data buffer address for data SRBs is not restored to the correct address from the mapped address. Therefore, the FreeFrame routine calls the wrong address when the frames are freed from the allocator.
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