From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: oops / null deref in __inet6_check_established(), kernel 2.6.29-rc6 Date: Sun, 01 Mar 2009 21:28:57 -0800 (PST) Message-ID: <20090301.212857.264627839.davem@davemloft.net> References: <20090224183554.330eb308@dhcp-100-2-144.bos.redhat.com> <20090228031618.GB28503@bombadil.infradead.org> <20090302050919.GJ28503@bombadil.infradead.org> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: cebbert@redhat.com, netdev@vger.kernel.org To: kyle@infradead.org Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:51158 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751003AbZCBF3P (ORCPT ); Mon, 2 Mar 2009 00:29:15 -0500 In-Reply-To: <20090302050919.GJ28503@bombadil.infradead.org> Sender: netdev-owner@vger.kernel.org List-ID: From: Kyle McMartin Date: Mon, 2 Mar 2009 00:09:19 -0500 > On Fri, Feb 27, 2009 at 10:16:18PM -0500, Kyle McMartin wrote: > > This only seems to show up when CONFIG_NET_NS is enabled. (Reproduced on > > git HEAD with that option on, doesn't occur with the option off.) > > > > I will confess complete ignorance to the network stack, but this patch > > fixes things... ipv4 seems to have the same namespace support, but > > increments the sock_net, not the twsk_net. > > > > I'll probably put this patch into Fedora, if only to prevent this from > > being used as a local DoS by an unprivileged user. > > > > Signed-off-by: Kyle McMartin > > > > Any thoughts? This is a pretty serious issue... Granted we should > probably just turn CONFIG_NET_NS off entirely, since it's > underdocumented and should be explicitly labelled as experimental > instead of just depending on it... It's in my queue, I just haven't gotten to it yet. Serious issue or not you have to be patient.