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Page fault in filter driver after i/o completion of subst-itute IRP

OSR_Community_UserOSR_Community_User Member Posts: 110,217
In an NT 4.0 filter driver I am intercepting every IRP_MJ_READ, queueing it
and sending on down to the lower level driver a substitute IRP which I
created "to look very much like the original." I do this so that if I don't
like the results I can do things till I get one I like and I can pass on the
completion of the caller's IRP when and how I wish.

My problem is that when I get a (the first) completion of my substitute IRP
I complete the original IRP with
IoCompleteRequest( originalIrp, IO_NO_INCREMENT);
and then return the status for my substitute IRP as
after exiting my code the system stops with a page fault in

I have removed all ExFreePool calls and added an additional stack location
as debug attempts with no changes. Anyone have any ideas??

Daniel J. Hickey
[email protected]
Mobile: 714 875-9997
Office: 714 843-6051
Fax: 714 375-2737
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