Monday 24 June 2013

Stop 0x19 - Some Theory About Corrupt Pool Headers

A Stop 0x19 will typically mention that a pool header has become corrupt, so I wanted to explain a little abit about the theory behind what a pool header is and how it is used in the Windows memory allocation system.

A device driver or process will often request a chunk of memory, therefore the Memory Manager will allocate the requested block of memory to the requesting process. Here is where, the header comes in, most Memory Managers will allocate a block of memory which is larger than the requested amount, this extra memory is known as the header. The header will contain useful information such as the size of the allocation and a pool tag. A tag is a form of information used to reference certain objects. 


What is an Object?

1 comment:

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