IRP_MN_FILTER_RESOURCE_REQUIREMENTS?

Hi All,

The problem i am facing is with respect to IRP_MN_FILTER_RESOURCE_REQUIREMENTS,
When ever i get this IRP i am just passing it down to the lower driver & then immediately system gets hung.
What exactly the OS requires with this irp?
can you please let me know the reason?

Thanks in advance,
Vishwanath M.