From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750854AbWBZOEA (ORCPT ); Sun, 26 Feb 2006 09:04:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750812AbWBZOEA (ORCPT ); Sun, 26 Feb 2006 09:04:00 -0500 Received: from keetweej.xs4all.nl ([213.84.46.114]:39579 "EHLO keetweej.vanheusden.com") by vger.kernel.org with ESMTP id S1750748AbWBZOD7 (ORCPT ); Sun, 26 Feb 2006 09:03:59 -0500 Date: Sun, 26 Feb 2006 15:03:57 +0100 From: Folkert van Heusden To: Andrew Morton Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [2.6.15] running tcpdump on 3c905b causes freeze (reproducable) Message-ID: <20060226140357.GU1570@vanheusden.com> References: <20060108114305.GA32425@vanheusden.com> <20060109041114.6e797a9b.akpm@osdl.org> <20060109144522.GB10955@vanheusden.com> <20060109193754.GD12673@vanheusden.com> <20060109224821.7a40bc69.akpm@osdl.org> <20060110142725.GH12673@vanheusden.com> <20060114132414.GN6087@vanheusden.com> <20060114060457.06efae88.akpm@osdl.org> <20060114233648.GA24049@vanheusden.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060114233648.GA24049@vanheusden.com> Organization: www.unixexpert.nl X-Chameleon-Return-To: folkert@vanheusden.com X-Xfmail-Return-To: folkert@vanheusden.com X-Phonenumber: +31-6-41278122 X-URL: http://www.vanheusden.com/ X-PGP-KeyID: 1F28D8AE X-GPG-fingerprint: AC89 09CE 41F2 00B4 FCF2 B174 3019 0E8C 1F28 D8AE X-Key: http://pgp.surfnet.nl:11371/pks/lookup?op=get&search=0x1F28D8AE Read-Receipt-To: Reply-By: Sun Feb 26 16:34:07 CET 2006 X-Message-Flag: www.vanheusden.com User-Agent: Mutt/1.5.10i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > > > > > > > > Have you tried enabling the NMI watchdog? Enable CONFIG_X86_LOCAL_APIC and > > > > > > > > boot with `nmi_watchdog=1' on the command line, make sure that the NMI line > > > > > > > > of /proc/interrupts is incrementing. > > > > > > > I'll give it a try. I've added it to the append-line in the lilo config. > > > > > > > Am now compiling the kernel. > > > > > > No change. Well, that is: the last message on the console now is > > > > > > "setting eth1 to promiscues mode". > > > > > Did you confirm that the NMI counters in /proc/interrupts are incrementing? > > > > Yes: > > > > root@muur:/home/folkert# for i in `seq 1 5` ; do cat /proc/interrupts | grep NMI ; sleep 1 ; done > > > > NMI: 6949080 6949067 > ... > > > > NMI: 6949488 6949475 > > > > > > Is there anything else I can try? > > argh. I haven't forgotten. Hopefully after -rc1 I'll have more time... > Sorry :-) > > Your report didn't mention whether that card work OK under earlier 2.6 > > kernels. If it does, a bit of bisection searching would really help. > 2.6.15 crash > 2.6.14.4 crash > 2.6.14 crash > 2.6.12.6 crash "NMI watchdog detected LOCKUP" > 2.6.6 crash "NMI watchdog detected LOCKUP on CPU1 eip c02500aa, registers:" > 2.6.1 would not boot It is definately a 3com 3c905b problem: I swapped that card yesterday with an adapter from a different brand (gigabit one) and now I can tcpdump without any lockups. Folkert van Heusden -- iPod winnen? --> http://keetweej.vanheusden.com/redir.php?id=62 -------------------------------------------------------------------- Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com