From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261963AbULVNdY (ORCPT ); Wed, 22 Dec 2004 08:33:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261986AbULVNdX (ORCPT ); Wed, 22 Dec 2004 08:33:23 -0500 Received: from mx01.cybersurf.com ([209.197.145.104]:40152 "EHLO mx01.cybersurf.com") by vger.kernel.org with ESMTP id S261963AbULVNdV (ORCPT ); Wed, 22 Dec 2004 08:33:21 -0500 Subject: Re: Lockup with 2.6.9-ac15 related to netconsole From: jamal Reply-To: hadi@cyberus.ca To: Francois Romieu Cc: Patrick McHardy , Matt Mackall , Mark Broadbent , linux-kernel@vger.kernel.org, netdev@oss.sgi.com In-Reply-To: <20041222123940.GA4241@electric-eye.fr.zoreil.com> References: <20041221002218.GA1487@electric-eye.fr.zoreil.com> <20041221005521.GD5974@waste.org> <52121.192.102.214.6.1103624620.squirrel@webmail.wetlettuce.com> <20041221123727.GA13606@electric-eye.fr.zoreil.com> <49295.192.102.214.6.1103635762.squirrel@webmail.wetlettuce.com> <20041221204853.GA20869@electric-eye.fr.zoreil.com> <20041221212737.GK5974@waste.org> <20041221225831.GA20910@electric-eye.fr.zoreil.com> <41C93FAB.9090708@trash.net> <41C9525F.4070805@trash.net> <20041222123940.GA4241@electric-eye.fr.zoreil.com> Content-Type: text/plain Organization: jamalopolous Message-Id: <1103722395.1090.77.camel@jzny.localdomain> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2 Date: 22 Dec 2004 08:33:15 -0500 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2004-12-22 at 07:39, Francois Romieu wrote: > If I am not mistaken, a failure on spin_trylock + the test on > xmit_lock_owner imply that it is safe to directly handle the > queue. It means that qdisc_run() has been interrupted on the > current cpu and the other paths seem fine as well. Counter-example > is welcome (no joke). Think more than 2 processors ;-> cheers, jamal