Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761170AbZLJR1X (ORCPT ); Thu, 10 Dec 2009 12:27:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760895AbZLJR1W (ORCPT ); Thu, 10 Dec 2009 12:27:22 -0500 Received: from hera.kernel.org ([140.211.167.34]:38613 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760874AbZLJR1V (ORCPT ); Thu, 10 Dec 2009 12:27:21 -0500 References: <20091210091040.GG8742@kernel.dk> <20091210103945.GI8742@kernel.dk> <20091210160640.GB27794@elte.hu> Message-Id: <67EA4830-231F-45C9-A1A6-CE1C6CD9493D@kernel.org> From: Yinghai To: Ingo Molnar In-Reply-To: <20091210160640.GB27794@elte.hu> Content-Type: text/plain; charset=us-ascii; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit X-Mailer: iPhone Mail (7D11) Mime-Version: 1.0 (iPhone Mail 7D11) Subject: Re: Bisected regression (Was Re: current -git fails to boot on nehalem-ex) Date: Thu, 10 Dec 2009 09:26:45 -0800 Cc: Jens Axboe , Thomas Gleixner , "H. Peter Anvin" , "linux-kernel@vger.kernel.org" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1377 Lines: 48 On Dec 10, 2009, at 8:06 AM, Ingo Molnar wrote: > > * Jens Axboe wrote: > >> On Thu, Dec 10 2009, Jens Axboe wrote: >>> Hi, >>> >>> As written in the subject, it just hard hangs before writing >>> anything on >>> the console. With earlyprintk, I captured the failure, see below. >>> >>> I'll try and bisect this, but it takes some time (since the bios and >>> post process takes forever). I just updated the firmware on the >>> box as >>> well, but it did boot 2.6.32 (and RHEL5 boots fine too). Of course >>> that >>> doesn't rule out a BIOS bug. >> >> Results are persistent, git bisect points to: >> >> commit b24c2a925a9837cccf54d50aeac22ba0cbc15455 >> Author: Yinghai Lu >> Date: Tue Nov 24 02:48:18 2009 -0800 >> >> x86: Move find_smp_config() earlier and avoid bootmem usage >> >> which appears consistent with the panic(). Reverting that does indeed >> make current -git boot properly. > > Thanks. Yinghai, do you have any ideas, or should we revert it? > Let find the root cause Jen Can you boot with earlyconsole or earlyprintk and debug? YH -- 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/