From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754258Ab2AWVSp (ORCPT ); Mon, 23 Jan 2012 16:18:45 -0500 Received: from acsinet15.oracle.com ([141.146.126.227]:32730 "EHLO acsinet15.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753501Ab2AWVSn (ORCPT ); Mon, 23 Jan 2012 16:18:43 -0500 Date: Mon, 23 Jan 2012 16:10:51 -0500 From: Konrad Rzeszutek Wilk To: Peter Zijlstra Cc: Suresh Siddha , tglx@linutronix.de, mingo@elte.hu, linux-kernel@vger.kernel.org, xen-devel@lists.xensource.com, gregkh@suse.de, rjw@sisk.pl Subject: Re: v3.3-rc1, regression introduced by "sched, nohz: Implement sched group, domain aware nohz idle load balancing" when unplugging CPUs. Message-ID: <20120123211051.GA10967@phenom.dumpdata.com> References: <20120123205638.GA8542@phenom.dumpdata.com> <1327352449.2446.19.camel@twins> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1327352449.2446.19.camel@twins> User-Agent: Mutt/1.5.21 (2010-09-15) X-Source-IP: acsinet21.oracle.com [141.146.126.237] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A090208.4F1DCE97.0093,ss=1,re=0.000,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jan 23, 2012 at 10:00:49PM +0100, Peter Zijlstra wrote: > On Mon, 2012-01-23 at 15:56 -0500, Konrad Rzeszutek Wilk wrote: > > Not exactly sure how this patch does it, but with this git commit > > 0b005cf54eac170a8f22540ab096a6e07bf49e7c, the Linux kernel crashes > > if I try to hot unplug VCPUs to the first (initial) domain. > > This is found using git bisection, and if I use the kernel compiled > > with 69e1e811dcc436a6b129dbef273ad9ec22d095ce (the previous commit) > > it works nicely. > > https://lkml.org/lkml/2012/1/19/463 > > is already on its way... Oh, somehow I thought the mce check fixes were already in v3.3-rc1. My apologies and will take that patch on a test-spin.