Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753750AbYKYRyq (ORCPT ); Tue, 25 Nov 2008 12:54:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752521AbYKYRyf (ORCPT ); Tue, 25 Nov 2008 12:54:35 -0500 Received: from mms1.broadcom.com ([216.31.210.17]:3378 "EHLO mms1.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752356AbYKYRye (ORCPT ); Tue, 25 Nov 2008 12:54:34 -0500 X-Server-Uuid: 02CED230-5797-4B57-9875-D5D2FEE4708A Date: Tue, 25 Nov 2008 09:54:13 -0800 From: "Matt Carlson" To: "Willy Tarreau" cc: "Matthew Carlson" , "Roger Heflin" , "Peter Zijlstra" , LKML , netdev Subject: Re: WARNING: at net/sched/sch_generic.c:219 dev_watchdog+0xfe/0x17e() with tg3 network Message-ID: <20081125175413.GA9808@xw6200.broadcom.net> References: <20081118065006.GC24654@1wt.eu> <20081120031101.GD26448@xw6200.broadcom.net> <20081120053746.GB15168@1wt.eu> <20081120184310.GB27712@xw6200.broadcom.net> <20081120212637.GB23844@1wt.eu> <20081120215318.GB27907@xw6200.broadcom.net> <20081124132744.GB24851@1wt.eu> <20081124215247.GA29696@1wt.eu> <20081125015223.GA9151@xw6200.broadcom.net> <20081125053128.GA32426@1wt.eu> MIME-Version: 1.0 In-Reply-To: <20081125053128.GA32426@1wt.eu> User-Agent: Mutt/1.5.16 (2007-06-09) X-OriginalArrivalTime: 25 Nov 2008 17:54:14.0492 (UTC) FILETIME=[D43D79C0:01C94F26] X-WSS-ID: 6532E44461S16304706-01-01 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1708 Lines: 39 On Mon, Nov 24, 2008 at 09:31:28PM -0800, Willy Tarreau wrote: > On Mon, Nov 24, 2008 at 05:52:23PM -0800, Matt Carlson wrote: > (...) > > > tg3: eth0: transmit timed out, resetting > > > tg3: DEBUG: MAC_TX_STATUS[0000000b] MAC_RX_STATUS[00000006] > > > tg3: DEBUG: RDMAC_STATUS[00000000] WDMAC_STATUS[00000008] > > > tg3: tg3_stop_block timed out, ofs=1400 enable_bit=2 > > > tg3: tg3_stop_block timed out, ofs=c00 enable_bit=2 > > > tg3: tg3_stop_block timed out, ofs=4c00 enable_bit=2 > > > tg3: eth0: Link is down. > > > tg3: eth0: Link is up at 100 Mbps, full duplex. > > > tg3: eth0: Flow control is on for TX and on for RX. > > > > > > The ease with which I reproduce it here clearly indicates that this is > > > related to the switch, probably just the fact that it is at 100 Mbps. > > > Unfortunately this evening I must go, but I still have one 100 Mbps > > > switch somewhere at home, I'll reproduce the same test ASAP in order > > > to bisect the issue. > > > > > > Regards, > > > Willy > > > > Does turning off flow control help at all? > > I have not tested but I will. I hope to be able to trigger the problem > on other similar switches, because I'm only once a week connected to > the culprit... I can't say for certain, but I suspect the problem might be more associated with the link speed than the particular switch you are using. Can you try autoneg'ing down to a slower speed and see if that helps make the problem more reproducable? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/