linux-kernel - Re: rhashtable: warnings caused by "rhashtable: Fix use-after-free in rhashtable_walk

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Message-ID: <20150323215513.GA20128@gondor.apana.org.au>
Date:	Tue, 24 Mar 2015 08:55:13 +1100
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Sasha Levin <sasha.levin@...cle.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>, Thomas Graf <tgraf@...g.ch>
Subject: Re: rhashtable: warnings caused by "rhashtable: Fix use-after-free
 in rhashtable_walk_stop"

On Mon, Mar 23, 2015 at 02:27:58PM -0400, Sasha Levin wrote:
> Hi all,
> 
> Commit 963ecbd41a ("rhashtable: Fix use-after-free in rhashtable_walk_stop") is causing
> RCU warnings since the code now locks a mutex (which might sleep) within an RCU critical
> section within rhashtable_walk_stop().

OK I will add a spin lock to bucket_table for this.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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