From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754931Ab0HDVrC (ORCPT ); Wed, 4 Aug 2010 17:47:02 -0400 Received: from kroah.org ([198.145.64.141]:35841 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754007Ab0HDVqu (ORCPT ); Wed, 4 Aug 2010 17:46:50 -0400 Date: Wed, 4 Aug 2010 14:46:18 -0700 From: Greg KH To: Michael Leun , "Eric W. Biederman" Cc: netdev@vger.kernel.org, davem@davemloft.net, linux-kernel@vger.kernel.org Subject: Re: NET_NS: unregister_netdevice: waiting for lo to become free (after using openvpn) (was Re: sysfs bug when using tun with network namespaces) Message-ID: <20100804214618.GA6289@kroah.com> References: <20100709235744.GA12752@kroah.com> <20100710101540.2799c9ef@xenia.leun.net> <20100710140800.GA20424@kroah.com> <20100710165208.59272ae6@xenia.leun.net> <20100710235323.5336f627@xenia.leun.net> <20100711192939.1c25dcaf@xenia.leun.net> <20100804153543.56f6ecad@xenia.leun.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100804153543.56f6ecad@xenia.leun.net> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Aug 04, 2010 at 03:35:43PM +0200, Michael Leun wrote: > Hi, > > On Sun, 11 Jul 2010 19:29:39 +0200 > Michael Leun wrote: > > [...] > > Jul 10 20:02:36 doris kernel: unregister_netdevice: waiting for lo to > > become free. Usage count = 3 [repeated] > > > > Now one might say it is fault of openvpn (used OpenVPN 2.1_rc20 > > i586-suse-linux - the one in openSuSE 11.2 package), openvpn didn't > > close some ressource and ssh does fine. > > > > But: should'nt kernel clean up after process when it exits? > > And/or: Should'nt kernel clean up if last process in network namespace > > exits - there is nothing left which might use that interface?! > > > > Greg KH wrote: > > > > > Yes, you are correct. Care to resend all of this to the > > > network-namespace developer(s) and the netdev mailing list so that > > > the correct people are notified so they can fix it all? > > > > [X] done - hopefully, cannot find a particular network namespace > > developer in MAINTAINERS or source files. If such a one exists, please > > forward. > > Did'nt work. Got no reaction from network mailinglist at all and bug > still is in 2.6.35. Eric, here's a bug with the network namespace stuff, care to work on resolving it? thanks, greg k-h