From mboxrd@z Thu Jan 1 00:00:00 1970 From: jamal Subject: Re: one more... iproute commands lockup whole system Date: Wed, 04 Apr 2007 09:58:22 -0400 Message-ID: <1175695102.4063.4.camel@localhost> References: <20070321175951.M73913@visp.net.lb> <46026717.9060909@trash.net> <20070322124533.M79867@visp.net.lb> <46027FF2.6020001@trash.net> <20070322101224.3e6bb899@freekitty> <20070404000054.M58020@visp.net.lb> <1175649016.3957.10.camel@localhost> <461301C0.2050409@trash.net> <20070404020622.M69215@visp.net.lb> <1175684114.4088.12.camel@localhost> <4613A9F6.8000307@trash.net> Reply-To: hadi@cyberus.ca Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: Denys , Stephen Hemminger , netdev@vger.kernel.org To: Patrick McHardy Return-path: Received: from wx-out-0506.google.com ([66.249.82.232]:1154 "EHLO wx-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753845AbXDDN6Z (ORCPT ); Wed, 4 Apr 2007 09:58:25 -0400 Received: by wx-out-0506.google.com with SMTP id h31so229918wxd for ; Wed, 04 Apr 2007 06:58:25 -0700 (PDT) In-Reply-To: <4613A9F6.8000307@trash.net> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Wed, 2007-04-04 at 15:36 +0200, Patrick McHardy wrote: > > We have a loop counter (RTTL) in tc_verd. For some reason it is reset > after ing_filter though. > Essentially it is valuable just to avoid a lot of stacking (separate issue) and not to avoid the locking issue he is seeing. > It would be interesting to find out what the problem is exactly. > The configuration itself looks harmless, so I'm guessing its > rather a deadlock than a loop. We know it is a deadlock. If you redirect the first time queue lock for eth0 will be held, before it is released if you do another redirect, it will again be heading towards eth0 and it will deadlock on grabbing the queue lock. cheers, jamal