Johannes Anderwald schrieb: 
Timo Kreuzer wrote:
  
Isn't that actually the same?

  
    
Hi,

IMO the old code only calculated the offset from PartialDescriptors 
array to CM_RESOURCE_LIST. This works fine if there are no partial 
descriptors. But it breaks if there are.
It was
FIELD_OFFSET(CM_RESOURCE_LIST, List[0].PartialResourceList.PartialDescriptors[ResourceCount]);
So it should have calculated the offset of PartialDescriptors[ResourceCount] which is one after the last one that belongs to the list or (ResourceCount-1) entries after the end of CM_RESOURCE_LIST.

  
It also ignores the number of full descriptors, which I guess is wrong.
And it looks like the whole parsing code is broken. It ignores the
number of partial descriptors and does FullList++
  
    
The MSDN states the number of CM_FULL_RESOURCE_DESCRIPTOR in 
CM_RESOURCE_LIST is always 1 for WDM drivers.
The partial descriptors are handeled in the 2nd for loop.
Ah, ok, but in this case the outer loop makes no sense and is only confusing. Maybe an ASSERT(..Count == 1) should be put instead?