ipc: fix potential oops when src msg > 4k w/ MSG_COPY
authorPeter Hurley <peter@hurleysoftware.com>
Fri, 8 Mar 2013 20:43:26 +0000 (12:43 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 8 Mar 2013 23:05:33 +0000 (15:05 -0800)
commite1082f45f1e2bbf6e25f6b614fc6616ebf709d19
treef9d3e4326eed088acfe4cd1e9a8caf9c2138da55
parent47b3bc907328db968bc9b43c41f48f8d1e140750
ipc: fix potential oops when src msg > 4k w/ MSG_COPY

If the src msg is > 4k, then dest->next points to the
next allocated segment; resetting it just prior to dereferencing
is bad.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
ipc/msgutil.c