From 7084a315897715776d1764f5fd9250609e515beb Mon Sep 17 00:00:00 2001
From: Ken-ichirou MATSUZAWA <chamaken@gmail.com>
Date: Fri, 28 Aug 2015 16:05:20 +0900
Subject: [PATCH] netlink: mmap: fix lookup frame position

__netlink_lookup_frame() was always called with the same "pos"
value in netlink_forward_ring(). It will look at the same ring entry
header over and over again, every time through this loop. Then cycle
through the whole ring, advancing ring->head, not "pos" until it
equals the "ring->head != head" loop test fails.

Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
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