linux-kernel - Re: [PATCH] fix suspicious rcu_dereference_check in net/sched/sch_fq

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Message-ID: <1418161372.27198.11.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Tue, 09 Dec 2014 13:42:52 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Valdis Kletnieks <Valdis.Kletnieks@...edu>
Cc:	Eric Dumazet <edumazet@...gle.com>,
	John Fastabend <john.r.fastabend@...el.com>,
	"David S. Miller" <davem@...emloft.net>,
	linux-kernel@...r.kernel.org, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] fix suspicious rcu_dereference_check in
 net/sched/sch_fq_codel.c

On Tue, 2014-12-09 at 16:15 -0500, Valdis Kletnieks wrote:
> commit 46e5da40ae (net: qdisc: use rcu prefix and silence
>  sparse warnings) triggers a spurious warning:
> 
> net/sched/sch_fq_codel.c:97 suspicious rcu_dereference_check() usage!
> 
> The code should be using the _bh variant of rcu_dereference.
> 
> Signed-off-by: Valdis Kletnieks <valdis.kletnieks@...edu>
> ---
>  net/sched/sch_fq_codel.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Acked-by: Eric Dumazet <edumazet@...gle.com>

Thanks !


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