From: Christoph Lameter <clameter@sgi.com>
Date: Tue, 16 Oct 2007 08:24:46 +0000 (-0700)
Subject: Slab allocators: fail if ksize is called with a NULL parameter
X-Git-Tag: v2.6.24-rc1~1218
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ef8b4520bd9f8294ffce9abd6158085bde5dc902;p=pandora-kernel.git

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>
---

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