From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net-next] netem: fix possible NULL deref in netem_dequeue() Date: Wed, 03 Jul 2013 16:53:47 -0700 (PDT) Message-ID: <20130703.165347.1410553793449942226.davem@davemloft.net> References: <1372885454.4979.73.camel@edumazet-glaptop> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, dan.carpenter@oracle.com To: eric.dumazet@gmail.com Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:39451 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932206Ab3GCXxs (ORCPT ); Wed, 3 Jul 2013 19:53:48 -0400 In-Reply-To: <1372885454.4979.73.camel@edumazet-glaptop> Sender: netdev-owner@vger.kernel.org List-ID: From: Eric Dumazet Date: Wed, 03 Jul 2013 14:04:14 -0700 > From: Eric Dumazet > > commit aec0a40a6f7884 ("netem: use rb tree to implement the time queue") > added a regression if a child qdisc is attached to netem, as we perform > a NULL dereference. > > Fix this by adding a temporary variable to cache > netem_skb_cb(skb)->time_to_send. > > Reported-by: Dan Carpenter > Signed-off-by: Eric Dumazet Applied, thanks Eric.