From: Sasha Levin <sasha.levin@oracle.com>
Date: Fri, 1 Aug 2014 03:00:35 +0000 (-0400)
Subject: iovec: make sure the caller actually wants anything in memcpy_fromiovecend
X-Git-Tag: v3.2.64~131
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=12ef6094ca7ab9eb443abdc88b1ddfd3c8fae15c;p=pandora-kernel.git

iovec: make sure the caller actually wants anything in memcpy_fromiovecend

[ Upstream commit 06ebb06d49486676272a3c030bfeef4bd969a8e6 ]

Check for cases when the caller requests 0 bytes instead of running off
and dereferencing potentially invalid iovecs.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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