Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265178AbTGAASS (ORCPT ); Mon, 30 Jun 2003 20:18:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265251AbTGAASR (ORCPT ); Mon, 30 Jun 2003 20:18:17 -0400 Received: from holly.csn.ul.ie ([136.201.105.4]:44741 "EHLO holly.csn.ul.ie") by vger.kernel.org with ESMTP id S265178AbTGAASR (ORCPT ); Mon, 30 Jun 2003 20:18:17 -0400 Date: Tue, 1 Jul 2003 01:32:38 +0100 (IST) From: Mel Gorman X-X-Sender: mel@skynet To: Paul Larson Cc: Linux Kernel Mailing List Subject: Re: [BUG] 2.5.73 Scheduling while atomic with taskfile IO and high memory In-Reply-To: <1057005453.5264.2964.camel@plars> Message-ID: References: <1057005453.5264.2964.camel@plars> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1005 Lines: 23 On Mon, 30 Jun 2003, Paul Larson wrote: > This sounds similar to what I was seeing with bug #800, only I don't > think I had taskfile IO enabled. Another person I talked to had some > success by enabling PIIX I think, but that did not work for me. The > only workaround that worked for me was to disable highmem support. I'm pretty sure we're looking at the same bug, at least they are remarkably similar for a co-incidence. If you have the time, it might be worth checking if commenting out inc_preempt_count() and dec_preempt_count() from kmap_atomic() and kunmap_atomic() masks the bug for you. It's not a workaround but it might help narrow down where things are going wrong -- Mel Gorman MSc Student, University of Limerick http://www.csn.ul.ie/~mel - 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/