netdev - Re: linux-next 20141208 - net/sched/sch_fq

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Message-ID: <CANn89iJAN815z3TefSjj0uZyQQyH-wTiAckt3WeMc-F7DRgpKA@mail.gmail.com>
Date:	Tue, 9 Dec 2014 10:07:31 -0800
From:	Eric Dumazet <edumazet@...gle.com>
To:	Valdis Kletnieks <Valdis.Kletnieks@...edu>
Cc:	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: linux-next 20141208 - net/sched/sch_fq_codel.c:97 suspicious RCU

On Tue, Dec 9, 2014 at 9:51 AM, Valdis Kletnieks
<Valdis.Kletnieks@...edu> wrote:
> Spotted this in dmesg while investigating why my wireless broke
> sometime between next-20141201 and next-20141208.  Probably not
> related, as wireless has been broken on several boot attempts of -1208,
> but this has popped only once....
>
> Looks like the fault of
>
> commit 46e5da40aec256155cfedee96dd21a75da941f2c
> Author: John Fastabend <john.fastabend@...il.com>
> Date:   Fri Sep 12 20:04:52 2014 -0700

Well, its a (harmless) typo : this should really be an
rcu_dereference_bh() instead of rcu_dereference()
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