From 794454ce72a298de6f4536ade597bdcc7dcde7c7 Mon Sep 17 00:00:00 2001
From: Arik Nemtsov <arik@wizery.com>
Date: Sun, 3 Jun 2012 23:32:32 +0300
Subject: [PATCH] mac80211: fix non RCU-safe sta_list manipulation

sta_info_cleanup locks the sta_list using rcu_read_lock however
the delete operation isn't rcu safe. A race between sta_info_cleanup
timer being called and a STA being removed can occur which leads
to a panic while traversing sta_list. Fix this by switching to the
RCU-safe versions.

Cc: stable@vger.kernel.org
Reported-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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