tree 54229f806387af348f46d0a79f780bf3f695f446
parent cfa7c16d4577a6e738bbd2bc83c6c8d7344e2d1a
author Amir Vadai <amir@vadai.me> 1480330600 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1481393243 +0100

net/sched: pedit: make sure that offset is valid

[ Upstream commit 95c2027bfeda21a28eb245121e6a249f38d0788e ]

Add a validation function to make sure offset is valid:
1. Not below skb head (could happen when offset is negative).
2. Validate both 'offset' and 'at'.

Signed-off-by: Amir Vadai <amir@vadai.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>