netdev - Re: [PATCH net-next] ipv4: fix a race in update_or_create

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Message-Id: <20140905.171630.1706805599539767486.davem@davemloft.net>
Date:	Fri, 05 Sep 2014 17:16:30 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] ipv4: fix a race in update_or_create_fnhe()

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Wed, 03 Sep 2014 22:21:56 -0700

> From: Eric Dumazet <edumazet@...gle.com>
> 
> nh_exceptions is effectively used under rcu, but lacks proper
> barriers. Between kzalloc() and setting of nh->nh_exceptions(),
> we need a proper memory barrier.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Fixes: 4895c771c7f00 ("ipv4: Add FIB nexthop exceptions.")

Applied, thanks Eric.
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