From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261718AbULUAZH (ORCPT ); Mon, 20 Dec 2004 19:25:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261712AbULUAZG (ORCPT ); Mon, 20 Dec 2004 19:25:06 -0500 Received: from electric-eye.fr.zoreil.com ([213.41.134.224]:43188 "EHLO fr.zoreil.com") by vger.kernel.org with ESMTP id S261718AbULUAYv (ORCPT ); Mon, 20 Dec 2004 19:24:51 -0500 Date: Tue, 21 Dec 2004 01:22:18 +0100 From: Francois Romieu To: Matt Mackall Cc: Mark Broadbent , linux-kernel@vger.kernel.org, netdev@oss.sgi.com Subject: Re: Lockup with 2.6.9-ac15 related to netconsole Message-ID: <20041221002218.GA1487@electric-eye.fr.zoreil.com> References: <59719.192.102.214.6.1103214002.squirrel@webmail.wetlettuce.com> <20041216211024.GK2767@waste.org> <34721.192.102.214.6.1103274614.squirrel@webmail.wetlettuce.com> <20041217215752.GP2767@waste.org> <20041217233524.GA11202@electric-eye.fr.zoreil.com> <36901.192.102.214.6.1103535728.squirrel@webmail.wetlettuce.com> <20041220211419.GC5974@waste.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20041220211419.GC5974@waste.org> User-Agent: Mutt/1.4.1i X-Organisation: Land of Sunshine Inc. Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Matt Mackall : > On Mon, Dec 20, 2004 at 09:42:08AM -0000, Mark Broadbent wrote: > > > > Exactly the same happens, I still get a 'NMI Watchdog detected LOCKUP' > > with the r8169 device using the above patch on top of 2.6.10-rc3-bk10. > > Ok, that suggests a problem localized to netpoll itself. Do you have > spinlock debugging turned on by any chance? Any chance of: 1 dev_queue_xmit 2 dev->xmit_lock taken 3 interruption 4 printk 5 netconsole write 6 dev->xmit_lock again 7 lockup ? This is probably the silly question of the day. -- Ueimor