netdev - Re: [Patch net-next] ipv6: fix a RCU warning in net/ipv6/ip6

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Message-Id: <20130208.175719.570595882555864927.davem@davemloft.net>
Date:	Fri, 08 Feb 2013 17:57:19 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	amwang@...hat.com
Cc:	netdev@...r.kernel.org, yoshfuji@...ux-ipv6.org
Subject: Re: [Patch net-next] ipv6: fix a RCU warning in
 net/ipv6/ip6_flowlabel.c

From: Cong Wang <amwang@...hat.com>
Date: Fri,  8 Feb 2013 09:52:40 +0800

> This patch fixes the following RCU warning:
> 
> [   51.680236] ===============================
> [   51.681914] [ INFO: suspicious RCU usage. ]
> [   51.683610] 3.8.0-rc6-next-20130206-sasha-00028-g83214f7-dirty #276 Tainted: G        W
> [   51.686703] -------------------------------
> [   51.688281] net/ipv6/ip6_flowlabel.c:671 suspicious rcu_dereference_check() usage!
> 
> we should use rcu_dereference_bh() when we hold rcu_read_lock_bh().
> 
> Reported-by: Sasha Levin <sasha.levin@...cle.com>
> Cc: David S. Miller <davem@...emloft.net>
> Cc: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
> Signed-off-by: Cong Wang <amwang@...hat.com>

Applied.
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