From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751801Ab1GOWEx (ORCPT ); Fri, 15 Jul 2011 18:04:53 -0400 Received: from e8.ny.us.ibm.com ([32.97.182.138]:55012 "EHLO e8.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750815Ab1GOWEw (ORCPT ); Fri, 15 Jul 2011 18:04:52 -0400 Date: Fri, 15 Jul 2011 15:04:47 -0700 From: "Paul E. McKenney" To: Ed Tomlinson Cc: Peter Zijlstra , Steven Rostedt , Sergey Senozhatsky , Ingo Molnar , Thomas Gleixner , Andrew Morton , Dipankar Sarma , linux-kernel@vger.kernel.org Subject: Re: INFO: possible circular locking dependency detected Message-ID: <20110715220447.GJ2327@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com References: <1310665613.27864.50.camel@gandalf.stny.rr.com> <1310746315.2586.370.camel@twins> <20110715165613.GC2327@linux.vnet.ibm.com> <201107151748.07109.edt@aei.ca> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201107151748.07109.edt@aei.ca> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 15, 2011 at 05:48:06PM -0400, Ed Tomlinson wrote: > On Friday 15 July 2011 12:56:13 Paul E. McKenney wrote: [ . . . ] > > OK. Ed, would you be willing to try the patch out? > > I am booted at the same git commit with a bluetooth and the disable local_bh around softirq() > patch from this thread. So far so good. Not sure how 'easy' this one is to trigger a second time - > I've been running with threadirq enabled since .39 came out. Last night was the first deadlock... > If nothing happened post rc6 to make it more likely it could be a while before it triggers again. Thank you for trying it out, Ed! And I know that you will not be shy should the problem recur. ;-) Thanx, Paul