tree c099a16691ac06208f4d3d65b71e7adaf7361fcd
parent 0da7e01f5f37f441cccd7c8c0586e06db0981907
author Christoph Lameter <clameter@sgi.com> 1192523086 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1192552973 -0700

Slab allocators: fail if ksize is called with a NULL parameter

A NULL pointer means that the object was not allocated.  One cannot
determine the size of an object that has not been allocated.  Currently we
return 0 but we really should BUG() on attempts to determine the size of
something nonexistent.

krealloc() interprets NULL to mean a zero sized object.  Handle that
separately in krealloc().

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>