From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759481AbXH0V5Y (ORCPT ); Mon, 27 Aug 2007 17:57:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933347AbXH0VtI (ORCPT ); Mon, 27 Aug 2007 17:49:08 -0400 Received: from ogre.sisk.pl ([217.79.144.158]:47390 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1764743AbXH0VtE (ORCPT ); Mon, 27 Aug 2007 17:49:04 -0400 From: "Rafael J. Wysocki" To: Pavel Machek Subject: Re: cpu hotplug support broken in 2.6.23-rc3 Date: Mon, 27 Aug 2007 23:59:31 +0200 User-Agent: KMail/1.9.5 Cc: Jeff Chua , rusty@rustycorp.com.au, vatsa@in.ibm.com, zwane@arm.linux.org.uk, kernel list References: <20070827104350.GA2073@elf.ucw.cz> <20070827213248.GF3398@elf.ucw.cz> In-Reply-To: <20070827213248.GF3398@elf.ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200708272359.32484.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Monday, 27 August 2007 23:32, Pavel Machek wrote: > On Mon 2007-08-27 22:36:57, Jeff Chua wrote: > > On 8/27/07, Pavel Machek wrote: > > > On Mon 2007-08-27 12:43:50, Pavel Machek wrote: > > > > Hi! > > > > > > > > Trying to do few onlines/offlines reliably hangs my machine (thinkpad > > > > x60, i386 architecture). > > > > I just 3 cycles of on-line/off-line on 2.6.23-rc3 on ThinkPad x60s, > > and my system still survives. > > Can you try 20-or-so tests? Mine hangs randomly, so it survived 4 or > so cycles at one point. > > ...or maybe difference is in the .config, or maybe I broken something > in my kernel sources.... Well, something seems to be wrong with the CPU hotplug, but it's insanely difficult to reproduce on my boxes. I bet on one of the notifiers blocking while waiting on a frozen task. Greetings, Rafael