any issue with IRP_MJ_QUERY_INFORMATION

NTFSD
1

Has anybody encountered a situation where sending IRP_MJ_QUERY_INFORMATION to the FSD from FSFD freezes the machine. Any known issue. when i comment the irp sending code it works. on opening the comment it freezes.

2

>Has anybody encountered a situation where sending IRP_MJ_QUERY_INFORMATION to the FSD from FSFD freezes the machine. Any known issue.

when i comment the irp sending code it works. on opening the comment it freezes.

Yeah! If IoGetTopLevelIrp() returns non Null.

3

> Has anybody encountered a situation where sending

IRP_MJ_QUERY_INFORMATION to the FSD from FSFD
freezes the machine.

In what situation are you calling the query info ?

L.

4

For all non - IRP_MJ_CREATE.

“Ladislav Zezula” wrote in message news:xxxxx@ntfsd…
> Has anybody encountered a situation where sending
> IRP_MJ_QUERY_INFORMATION to the FSD from FSFD
> freezes the machine.

In what situation are you calling the query info ?

L.

5

There are several reasons why this can happen.

Break in with the debugger and do a “!process 0 7” and
look at the blocked thread.

If you still can’t figure it out, post the call stack
and your code that rolls the irp.

— Mani wrote:
> Has anybody encountered a situation where sending
> IRP_MJ_QUERY_INFORMATION to the FSD from FSFD
> freezes the machine. Any known issue. when i comment
> the irp sending code it works. on opening the
> comment it freezes.
> —
> Questions? First check the IFS FAQ at
> https://www.osronline.com/article.cfm?id=17
>
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