From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net] net: igmp: add a missing rcu locking section Date: Thu, 01 Feb 2018 15:00:09 -0500 (EST) Message-ID: <20180201.150009.1785639412359558938.davem@davemloft.net> References: <1517509617.3715.120.camel@gmail.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, cernekee@chromium.org To: eric.dumazet@gmail.com Return-path: Received: from shards.monkeyblade.net ([184.105.139.130]:50108 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754594AbeBAUAK (ORCPT ); Thu, 1 Feb 2018 15:00:10 -0500 In-Reply-To: <1517509617.3715.120.camel@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Eric Dumazet Date: Thu, 01 Feb 2018 10:26:57 -0800 > From: Eric Dumazet > > Newly added igmpv3_get_srcaddr() needs to be called under rcu lock. > > Timer callbacks do not ensure this locking. ... > Fixes: a46182b00290 ("net: igmp: Use correct source address on IGMPv3 reports") > Signed-off-by: Eric Dumazet > Reported-by: syzbot Applied and queued up for -stable.