From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752069Ab3BFGX5 (ORCPT ); Wed, 6 Feb 2013 01:23:57 -0500 Received: from mail.candelatech.com ([208.74.158.172]:39915 "EHLO ns3.lanforge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751891Ab3BFGX4 (ORCPT ); Wed, 6 Feb 2013 01:23:56 -0500 Message-ID: <5111F6F6.7010402@candelatech.com> Date: Tue, 05 Feb 2013 22:23:50 -0800 From: Ben Greear Organization: Candela Technologies User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130110 Thunderbird/17.0.2 MIME-Version: 1.0 To: Steven Rostedt CC: Linux Kernel Mailing List , Peter Zijlstra , Ingo Molnar Subject: Re: Question on lockdep and MAX_LOCK_DEPTH References: <5111AD8D.1080005@candelatech.com> <20130206015430.GA9161@home.goodmis.org> <5111BF51.5010607@candelatech.com> <1360119124.2621.37.camel@gandalf.local.home> <5111CE60.4080403@candelatech.com> <1360125419.2621.39.camel@gandalf.local.home> In-Reply-To: <1360125419.2621.39.camel@gandalf.local.home> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/05/2013 08:36 PM, Steven Rostedt wrote: > On Tue, 2013-02-05 at 19:30 -0800, Ben Greear wrote: > >> It's huge, so here's a link: >> >> http://www.candelatech.com/~greearb/debug.tgz >> > > The trace shows that __netif_receive_skb() is grabbing an > rcu_read_lock() but never releasing it. But I don't see any possible way > that can be true in the code. > > Can you apply the following patch and run the trace again. I'd like to > see if the code is going in the path I expect it is. I'll look at this in detail tomorrow. I have a few patches in dev.c code, maybe I merged something badly.... Thanks, Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com