FltQueryInformation hangs

Hi all,
I am calling FltQueryInformation to determine whether a file has an
extended attribute in our minifilter. This is working for most file types
but when we are trying to do it for a .ppt or .docx file it hangs, which
results in the application hanging as well. Also we can’t stop the
minifilter after this.
Would appreciate if somebody could point out as to what might be causing
this ?

Thanks,
Dhirendra.

Can you grab a stack trace? It should be pretty obvious what is going on
if you view it in WinDbg.

Pete

On 4/23/2011 1:13 AM, DHIRENDRA ram wrote:

Hi all,
I am calling FltQueryInformation to determine whether a file has
an extended attribute in our minifilter. This is working for most file
types but when we are trying to do it for a .ppt or .docx file it hangs,
which results in the application hanging as well. Also we can’t stop the
minifilter after this.
Would appreciate if somebody could point out as to what might be
causing this ?

Thanks,
Dhirendra.
— NTFSD is sponsored by OSR For our schedule of debugging and file
system seminars visit: http://www.osr.com/seminars To unsubscribe, visit
the List Server section of OSR Online at
http://www.osronline.com/page.cfm?name=ListServer


Kernel Drivers
Windows File System and Device Driver Consulting
www.KernelDrivers.com
866.263.9295