From: Eric Dumazet <eric.dumazet@gmail.com>
To: David Miller <davem@davemloft.net>
Cc: jamie@audible.transient.net, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org
Subject: Re: 2.6.38-rc1: arp triggers RTNL assertion
Date: Fri, 21 Jan 2011 23:13:19 +0100 [thread overview]
Message-ID: <1295647999.2609.31.camel@edumazet-laptop> (raw)
In-Reply-To: <20110121.130657.106806953.davem@davemloft.net>
Le vendredi 21 janvier 2011 à 13:06 -0800, David Miller a écrit :
> From: Eric Dumazet <eric.dumazet@gmail.com>
> Date: Fri, 21 Jan 2011 19:52:56 +0100
>
> > Here is how I fixed this, thanks again Jamie !
> >
> > [PATCH] net: neighbour: pneigh_lookup() doesnt need RTNL
>
> Eric, I don't think we can do this.
>
> Fundamentally, any time a user operation changes the configuration
> of the networking, we must hold the RTNL.
>
> Eliding the RTNL for lookups is fine, but for things that change
> state it is not.
>
> I therefore think you'll need to rework the arp_ioctl() portions
> of the commit that introduced this regression.
>
Hmm, I'll think about it, no problem.
next prev parent reply other threads:[~2011-01-21 22:13 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-21 6:17 2.6.38-rc1: arp triggers RTNL assertion Jamie Heilman
2011-01-21 7:12 ` Eric Dumazet
2011-01-21 14:02 ` Richard Cochran
2011-01-21 18:52 ` Eric Dumazet
2011-01-21 21:06 ` David Miller
2011-01-21 22:13 ` Eric Dumazet [this message]
2011-01-24 21:11 ` Eric Dumazet
2011-01-24 21:14 ` David Miller
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