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: omap-for-v3.17/fixes-against-rc2~149^2^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=06ebb06d49486676272a3c030bfeef4bd969a8e6;p=pandora-kernel.git

iovec: make sure the caller actually wants anything in memcpy_fromiovecend

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>
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