From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Greear Subject: Re: NET_NS: unregister_netdevice: waiting for lo to become free (after using openvpn) Date: Thu, 05 Aug 2010 09:57:14 -0700 Message-ID: <4C5AED6A.8040602@candelatech.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> <20100804214618.GA6289@kroah.com> <20100805001105.5a3453ed@xenia.leun.net> <20100805112538.60a46cb1@xenia.leun.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Michael Leun , Greg KH , netdev@vger.kernel.org, davem@davemloft.net, linux-kernel@vger.kernel.org, Alexey Dobriyan , Patrick McHardy To: "Eric W. Biederman" Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On 08/05/2010 02:51 AM, Eric W. Biederman wrote: > Michael Leun writes: >> Unfortunately looks like indefinitely. Never watched longer so far >> (rebooted soon), but I'm seeing this message now repeated every 10 secs >> for ~10 minutes on a idle system. > > Ugh. A real bug then. These can be a pain to track down and fix. I > think the last one of these I tracked down took a couple of weeks. I > will start digging in when I get back from vacation. I once spent a similar amount of time putting in debug variants that printed info for each time a netdev was acquired and released. Maybe a similar logic could be put into the official kernel (and disabled by default)? That should save effort in the long run, I'd think. Thanks, Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com