From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763472AbXGRMmG (ORCPT ); Wed, 18 Jul 2007 08:42:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758377AbXGRMlz (ORCPT ); Wed, 18 Jul 2007 08:41:55 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:34626 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758178AbXGRMly (ORCPT ); Wed, 18 Jul 2007 08:41:54 -0400 Date: Wed, 18 Jul 2007 14:41:41 +0200 From: Ingo Molnar To: Olaf Kirch Cc: Jarek Poplawski , Linus Torvalds , linux-kernel@vger.kernel.org, davem@davemloft.net Subject: Re: [patch] revert: [NET]: Fix races in net_rx_action vs netpoll Message-ID: <20070718124141.GA31215@elte.hu> References: <20070716091236.GA10718@elte.hu> <200707172034.20581.olaf.kirch@oracle.com> <20070717185602.GA25271@elte.hu> <200707181404.20458.olaf.kirch@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200707181404.20458.olaf.kirch@oracle.com> User-Agent: Mutt/1.5.14 (2007-02-12) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.1.7-deb -1.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Olaf Kirch wrote: > On Tuesday 17 July 2007 20:56, Ingo Molnar wrote: > > i logged these not via netconsole but via logging on over the console > > and using dmesg, so it should include everything. in the 100hz case the > > following seems to show the anomaly: > > > > NETDEV WATCHDOG: eth0: transmit timed out > > So, it seems as if for some reason, dev->poll isn't called frequently > enough. > > Here's a debugging patch that tries to locate the problem - can you > give it a try, please? sure, give me a minute. Ingo