Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755587Ab1FNAnT (ORCPT ); Mon, 13 Jun 2011 20:43:19 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.125]:51840 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755529Ab1FNAnP (ORCPT ); Mon, 13 Jun 2011 20:43:15 -0400 X-Authority-Analysis: v=1.1 cv=IOX921YOuPvYFce5aSLzPVIStpiCPR9M8R83dyHW74w= c=1 sm=0 a=ZFNFh-pPGIMA:10 a=5SG0PmZfjMsA:10 a=Q9fys5e9bTEA:10 a=OPBmh+XkhLl+Enan7BmTLg==:17 a=Rprz5T8hdKOvOCPhRl8A:9 a=wvJwm4OuDsYDrXEtBDcA:7 a=PUjeQqilurYA:10 a=OPBmh+XkhLl+Enan7BmTLg==:117 X-Cloudmark-Score: 0 X-Originating-IP: 67.242.120.143 Subject: Re: Lockdep splat in autofs with 2.6.39-rc2 From: Steven Rostedt To: Nick Bowler Cc: linux-kernel@vger.kernel.org, autofs@linux.kernel.org, Ian Kent , Peter Zijlstra In-Reply-To: <20110511191301.GA18504@elliptictech.com> References: <20110407194403.GA29404@elliptictech.com> <20110421212537.GC24898@home.goodmis.org> <20110427132219.GA2843@elliptictech.com> <20110511191301.GA18504@elliptictech.com> Content-Type: text/plain; charset="ISO-8859-15" Date: Mon, 13 Jun 2011 20:43:13 -0400 Message-ID: <1308012193.9218.105.camel@gandalf.stny.rr.com> Mime-Version: 1.0 X-Mailer: Evolution 2.32.2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1406 Lines: 34 On Wed, 2011-05-11 at 15:13 -0400, Nick Bowler wrote: > On 2011-04-27 09:22 -0400, Nick Bowler wrote: > > On 2011-04-21 17:25 -0400, Steven Rostedt wrote: > > > On Thu, Apr 07, 2011 at 03:44:03PM -0400, Nick Bowler wrote: > > > > Just saw this on 2.6.39-rc2 after half a day or so of uptime. I've > > > > never seen it before today so it may be a regression from 2.6.38. > > > > Nothing seems have failed as a result. Please let me know if you > > > > need any more info. > > > > > > Could you try this patch. I know it may be hard to reproduce, but the > > > issue is that we are recursing down the locks in a tree/list and we changed a > > > lock from being nested to being a parent. This patch tells lockdep about > > > what we did. > > > > OK, I've built 2.6.39-rc5 with this patch applied. However, it took ~5 > > days before I saw any splat with -rc4, thus it's unlikely that I'll be > > able to say for sure that it works. > > FWIW, haven't had any problems with this kernel (+ patch) during the > last two weeks. I'm going to wrap this up and send it out as a proper patch. Can I add your "Reported-by" and "Tested-by" tags? Thanks, -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/