From mboxrd@z Thu Jan 1 00:00:00 1970 From: ebiederm@xmission.com (Eric W. Biederman) Subject: Re: BUG ? ipip unregister_netdevice_many() Date: Fri, 08 Oct 2010 09:45:15 -0700 Message-ID: References: <201010071048.12817.hans.schillstrom@ericsson.com> <4CAEFE2C.3010007@free.fr> <201010081353.28056.hans.schillstrom@ericsson.com> <201010081428.37639.hans.schillstrom@ericsson.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Daniel Lezcano , "netdev\@vger.kernel.org" To: Hans Schillstrom Return-path: Received: from out01.mta.xmission.com ([166.70.13.231]:49323 "EHLO out01.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754121Ab0JHQpU (ORCPT ); Fri, 8 Oct 2010 12:45:20 -0400 In-Reply-To: <201010081428.37639.hans.schillstrom@ericsson.com> (Hans Schillstrom's message of "Fri, 8 Oct 2010 14:28:37 +0200") Sender: netdev-owner@vger.kernel.org List-ID: Hans Schillstrom writes: > Hi Eric, > Any advice how to trace this down ? > This rollback_registered_many() seems to have on the lists before... That is just the core piece that does device registration. > All IPv4 and IPv6 tunnels causes this crash, all you have to do is load the tunnel module(s) > enter a new ns and exit from it. Ouch. > Have not tested any more devices than tunnels, > I did an "ip link delete" on my macvlans before exiting the ns. My hunch is that we have dst entry problems, as I know those hop network interfaces when we destroy network devices, but I have seen weird issues with the route cache as well. Grumble. Eric