From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755565Ab2IUN0a (ORCPT ); Fri, 21 Sep 2012 09:26:30 -0400 Received: from mail-ee0-f46.google.com ([74.125.83.46]:55867 "EHLO mail-ee0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754707Ab2IUN02 (ORCPT ); Fri, 21 Sep 2012 09:26:28 -0400 Message-ID: <505C6B03.7020305@gmail.com> Date: Fri, 21 Sep 2012 15:26:27 +0200 From: Sasha Levin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120913 Thunderbird/15.0.1 MIME-Version: 1.0 To: paulmck@linux.vnet.ibm.com CC: Michael Wang , Dave Jones , "linux-kernel@vger.kernel.org" Subject: Re: RCU idle CPU detection is broken in linux-next References: <5050CCE0.4090403@gmail.com> <20120919153934.GB2455@linux.vnet.ibm.com> <5059F458.3000407@gmail.com> <20120919170648.GF2455@linux.vnet.ibm.com> <505AC6C8.9060706@linux.vnet.ibm.com> <505AC979.7000008@gmail.com> <20120920152341.GE2449@linux.vnet.ibm.com> <505C33B9.8000807@gmail.com> <20120921121346.GD2458@linux.vnet.ibm.com> In-Reply-To: <20120921121346.GD2458@linux.vnet.ibm.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/21/2012 02:13 PM, Paul E. McKenney wrote: >> This might be unrelated, but I got the following dump as well when trinity >> > decided it's time to reboot my guest: > OK, sounds like we should hold off until you reproduce, then. I'm not sure what you mean. There are basically two issues I'm seeing now, which reproduce pretty much every time: 1. The "using when idle" warning. 2. The rcu related hangs during shutdown. The first one appears early on when I start fuzzing, the other one happens when shutting down - so both of them are reproducible in the same session. Thanks, Sasha