From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: 2.6.23-rc7-mm1 AHCI ATA errors -- won't boot Date: Mon, 24 Sep 2007 21:37:30 -0400 Message-ID: <46F8665A.4000206@garzik.org> References: <46F7FBCB.4030803@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from srv5.dvmed.net ([207.36.208.214]:46151 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752407AbXIYBhd (ORCPT ); Mon, 24 Sep 2007 21:37:33 -0400 In-Reply-To: <46F7FBCB.4030803@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: "Berck E. Nash" Cc: "linux-ide@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Andrew Morton Berck E. Nash wrote: > Greetings, > > I get a few million of these on boot-- the system never actually boots. > Works fine in 2.6.23-rc7. > > [ 50.456012] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 > [ 50.462484] ata2.00: irq_stat 0x40000001 > [ 50.466441] ata2.00: cmd e5/00:00:00:00:00/00:00:00:00:00/a0 tag 0 > cdb 0x0 data 0 > [ 50.466442] res 51/04:00:01:01:80/00:00:00:00:00/a0 Emask > 0x1 (device error) > [ 50.481914] ata2.00: status: {DRDY ERR } > [ 50.485876] ata2.00: error: {ABRT } > [ 50.489533] ata2.00: configured for UDMA/133 > [ 50.493839] ata2: EH complete > > I've attached the entire dmesg and lspci. Are you "git-friendly"? A few quick kernel compiles and reboots would help us narrow down the problem, given that it's a reproducible regression. The first step would be to clone the "upstream" branch of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev.git and see if the problem is reproducible there. If yes, then you have narrowed down the problem to something my ATA devel tree has introduced into -mm. Once the blame has been squared fixed upon me :) you can use git-bisect to locate the precise change that broke your setup. Info at http://kerneltrap.org/node/11753 or http://www.kernel.org/pub/software/scm/git/docs/v1.3.3/howto/isolate-bugs-with-bisect.txt or "man git-bisect" Jeff