From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: Possible regression with 3.13 Date: Mon, 18 Nov 2013 13:12:54 -0500 Message-ID: <20131118181254.GO3364@phenom.dumpdata.com> References: <528A3B0F.7090502@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1ViTK9-0003pG-K2 for xen-devel@lists.xenproject.org; Mon, 18 Nov 2013 18:13:25 +0000 Content-Disposition: inline In-Reply-To: <528A3B0F.7090502@oracle.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Boris Ostrovsky , mingo@kernel.org Cc: xen-devel , David Vrabel , linux@eikelenboom.it List-Id: xen-devel@lists.xenproject.org On Mon, Nov 18, 2013 at 11:06:39AM -0500, Boris Ostrovsky wrote: > We appear to have a regression in 32-bit 3.13 Linux dom0 --- > sometimes (often) dom0 gets stuck somewhere in RCU while running an > HVM guest (with "INFO: rcu_sched self-detected stall on CPU..." > message being the first indication of things not going well). Thanks for reporting it! > > I believe this was brought in by 39cf275 merge. I am trying to > bisect this merge but having a bit of tool trouble. While I am doing > this, if anyone noticed any issues with 32-bit dom0 recently, please > let me know. Hey Ingo, Cc-ing you so you are aware of the regression issues. > > I see this most often with 4.1 but I think unstable is also affected. > > -boris