Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756731AbYFOX2V (ORCPT ); Sun, 15 Jun 2008 19:28:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752051AbYFOX2B (ORCPT ); Sun, 15 Jun 2008 19:28:01 -0400 Received: from E23SMTP03.au.ibm.com ([202.81.18.172]:49892 "EHLO e23smtp03.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751910AbYFOX2B (ORCPT ); Sun, 15 Jun 2008 19:28:01 -0400 Date: Sun, 15 Jun 2008 16:27:54 -0700 From: "Paul E. McKenney" To: Linus Torvalds Cc: Alexey Dobriyan , Oleg Nesterov , Adrian Bunk , "Rafael J. Wysocki" , Linux Kernel Mailing List Subject: Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0 Message-ID: <20080615232754.GD17915@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com References: <20080613135255.GB21341@cs181133002.pp.htv.fi> <20080614144200.GA26421@linux.vnet.ibm.com> <20080614145839.GA10523@tv-sign.ru> <20080614181212.GB26421@linux.vnet.ibm.com> <20080614194338.GA4820@martell.zuzino.mipt.ru> <20080615033001.GE26421@linux.vnet.ibm.com> <20080615162150.GA8289@martell.zuzino.mipt.ru> <20080615181710.GA17915@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1579 Lines: 30 On Sun, Jun 15, 2008 at 01:32:48PM -0700, Linus Torvalds wrote: > > > On Sun, 15 Jun 2008, Paul E. McKenney wrote: > > > > > > Both patches (independently) do not help with rcutortures failures: > > > > > > [ 58.968404] rcu-torture:--- Start of test: nreaders=4 nfakewriters=4 stat_interval=0 verbose=0 test_no_idle_hz=0 shuffle_interval = 5 > > > [ 159.044524] rcu-torture: rtc: 0000000000000000 ver: 53859 tfle: 0 rta: 53859 rtaf: 18 rtf: 53797 rtmbe: 0 > > > [ 159.044527] rcu-torture: !!! Reader Pipe: 65565142 4275 1 0 0 0 0 0 0 0 0 > > > [ 159.044529] rcu-torture: Reader Batch: 65564196 5207 7 3 1 1 0 1 1 0 1 > > > [ 159.044530] rcu-torture: Free-Block Circulation: 53858 53853 53846 53843 53834 53825 53816 53808 53803 53797 0 > > > [ 159.044976] rcu-torture:--- End of test: FAILURE: nreaders=4 nfakewriters=4 stat_interval=0 verbose=0 test_no_idle_hz=0 shuffle_interval = 5 > > > > And the repeat-by is simply running LTP in parallel with rcutorture? > > This is a one-hour run of rcutorture or thereabouts? > > Should we mark PREEMPT_RCU as BROKEN for now? I don't know if anybody > really enables it, but it might be a good idea to make sure people don't > do so thinking it's good.. If that is the right thing to do. I would feel better about it if I could reproduce the failure. Thanx, Paul -- 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/