From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net-next] net/ipv6: fix LOCKDEP issue in rt6_remove_exception_rt() Date: Tue, 24 Apr 2018 16:19:38 -0400 (EDT) Message-ID: <20180424.161938.1265588832730788595.davem@davemloft.net> References: <20180424162249.41820-1-edumazet@google.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, eric.dumazet@gmail.com, dsahern@gmail.com To: edumazet@google.com Return-path: Received: from shards.monkeyblade.net ([184.105.139.130]:39878 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750842AbeDXUTj (ORCPT ); Tue, 24 Apr 2018 16:19:39 -0400 In-Reply-To: <20180424162249.41820-1-edumazet@google.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Eric Dumazet Date: Tue, 24 Apr 2018 09:22:49 -0700 > rt6_remove_exception_rt() is called under rcu_read_lock() only. > > We lock rt6_exception_lock a bit later, so we do not hold > rt6_exception_lock yet. > > Fixes: 8a14e46f1402 ("net/ipv6: Fix missing rcu dereferences on from") > Signed-off-by: Eric Dumazet > Reported-by: syzbot Applied, thanks Eric.