From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 12 Nov 2002 15:27:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 12 Nov 2002 15:27:55 -0500 Received: from electric-eye.fr.zoreil.com ([213.41.134.224]:7942 "EHLO fr.zoreil.com") by vger.kernel.org with ESMTP id ; Tue, 12 Nov 2002 15:27:55 -0500 Date: Tue, 12 Nov 2002 21:34:35 +0100 From: romieu@fr.zoreil.com To: Benjamin Herrenschmidt Cc: linux-kernel@vger.kernel.org, werner.almesberger@epfl.ch Subject: Re: ATM stack locking broken Message-ID: <20021112213435.A21918@electric-eye.fr.zoreil.com> References: <1037124679.2774.111.camel@zion> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <1037124679.2774.111.camel@zion>; from benh@kernel.crashing.org on Tue, Nov 12, 2002 at 07:11:19PM +0100 X-Organisation: Marie's fan club - III Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Benjamin Herrenschmidt : [...] > I've spent some time trying to figure out why an ATM driver > I was hacking with kept deadlocking until I figured out the > problem actually is the kernel ATM stack on SMP. > > spinlock usage in net/atm/* seem to be utterly broken, though > I don't know the ATM stack well enough myself to fix it quickly, It's known (for quite some time :o/ ) Don't hold your breath until xmas. -- Ueimor