From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753351Ab0H2Mnu (ORCPT ); Sun, 29 Aug 2010 08:43:50 -0400 Received: from hera.kernel.org ([140.211.167.34]:48323 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752989Ab0H2Mnt (ORCPT ); Sun, 29 Aug 2010 08:43:49 -0400 Message-ID: <4C7A5455.7060905@kernel.org> Date: Sun, 29 Aug 2010 14:36:37 +0200 From: Tejun Heo User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2 MIME-Version: 1.0 To: CAI Qian CC: kexec , linux-next@vger.kernel.org, torvalds@linux-foundation.org, linux-kernel Subject: Re: kdump regression compared to v2.6.35 References: <779893521.1479771283083393771.JavaMail.root@zmail06.collab.prod.int.phx2.redhat.com> In-Reply-To: <779893521.1479771283083393771.JavaMail.root@zmail06.collab.prod.int.phx2.redhat.com> X-Enigmail-Version: 1.1.1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Sun, 29 Aug 2010 12:43:02 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, On 08/29/2010 02:03 PM, CAI Qian wrote: > > ----- "Tejun Heo" wrote: > >> On 08/29/2010 01:56 PM, CAI Qian wrote: >>> It is easy to reproduce by passing maxcpus=1 to the first kernel. >> >> Do you mean booting w/ maxcpus=1 hangs the first kernel even w/o >> kdump? > Yes, here was the log, Hmmm... I can't reproduce it here. I wonder what the difference is. Can you please trigger sysrq-t after the boot is hung and post the result? Thanks. -- tejun