From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932128Ab1KKPsz (ORCPT ); Fri, 11 Nov 2011 10:48:55 -0500 Received: from e9.ny.us.ibm.com ([32.97.182.139]:38109 "EHLO e9.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756709Ab1KKPsx (ORCPT ); Fri, 11 Nov 2011 10:48:53 -0500 Date: Fri, 11 Nov 2011 07:48:45 -0800 From: "Paul E. McKenney" To: Christoph Lameter Cc: Yong Zhang , linux-kernel@vger.kernel.org, Pekka Enberg , Thomas Gleixner , cl@gentwo.org Subject: Re: 3.2-rc1: INFO: possible recursive locking detected Message-ID: <20111111154845.GA2283@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com References: <20111109090556.GA5949@zhy> <20111110234717.GI2354@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) x-cbid: 11111115-7182-0000-0000-0000002CE3CE Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Nov 11, 2011 at 08:43:13AM -0600, Christoph Lameter wrote: > On Thu, 10 Nov 2011, Paul E. McKenney wrote: > > > On Wed, Nov 09, 2011 at 05:05:57PM +0800, Yong Zhang wrote: > > > Hi, > > > > > > Just get below waring when doing: > > > for i in `seq 1 10`; do ./perf bench -f simple sched messaging -g 40; done > > > > > > And kernel config is attached. > > > > This appears to me to be the same false positive from the slab allocator > > that has been seen before. Christoph, any progress on this? > > No this is another issue because it is not SLAB but SLUB. Must be a bug > introduced by the recent merges of the per cpu partial list support. Ah, OK. Thank you for looking this over and for the suggested solutions! Thanx, Paul