From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Greear Subject: Re: Unable to halt or reboot due to - unregister_netdevice: waiting for eth0.20 to become free. Usage count = 1 Date: Wed, 06 Sep 2006 11:01:40 -0700 Message-ID: <44FF0D04.5020405@candelatech.com> References: <9a8748490609010259l7c42ca88tbcc87410a770b48c@mail.gmail.com> <9a8748490609010351kd8f0d40ud3509e2f3eaa89ac@mail.gmail.com> <9a8748490609010435k6b327237ve6a23ddcaa0f4065@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Herbert Xu , linux-kernel@vger.kernel.org, waltje@uwalt.nl.mugnet.org, ross.biro@gmail.com, davem@davemloft.net, yoshfuji@linux-ipv6.org, netdev@vger.kernel.org Return-path: Received: from ns2.lanforge.com ([66.165.47.211]:11691 "EHLO ns2.lanforge.com") by vger.kernel.org with ESMTP id S1751274AbWIFSBG (ORCPT ); Wed, 6 Sep 2006 14:01:06 -0400 To: Jesper Juhl In-Reply-To: <9a8748490609010435k6b327237ve6a23ddcaa0f4065@mail.gmail.com> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Jesper Juhl wrote: > Ok, I've done some more testing and it seems, unfortunately, that I > can't trigger the problem reliably. I guess I was just "lucky" with my > first few reboots. > It now seems that uptime and/or amount of data that has flowed over > the vlan interface impacts the probability of hitting the problem. Back when I was chasing the neighbor table leak, I wrote a patch to catch ref-count leaks for net devices. It was against 2.6.13 or so, but if nothing else is helping, it might be worth dusting off. I put what I believe was the last iteration of that patch here: http://www.candelatech.com/oss/rfcnt.patch Thanks, Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com