RE: [PATCH] SUNRPC: Prevent kernel stack corruption on long values of flush

From: David Laight
Date: Thu Oct 18 2012 - 04:38:33 EST

> ...
> long is always the same or bigger then a pointer
> (A pointer must always fit in a long)
> ...

Linux may make that assumption, but it doesn't have
to be true. 64bit windows still has 32bit long.
C99 inttypes.h defines [u]intptr_t to be an integral type
that is large enough to hold a pointer to any data item.
(That in itself is problematic for implementations that
encode multiple characters into a machine word and need
to use 'fat' pointers in order to encode the offset.)


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