From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753173Ab3GHVEV (ORCPT ); Mon, 8 Jul 2013 17:04:21 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:52530 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752833Ab3GHVEU (ORCPT ); Mon, 8 Jul 2013 17:04:20 -0400 Date: Mon, 8 Jul 2013 14:04:19 -0700 From: Andrew Morton To: Michal Hocko Cc: Dave Chinner , Glauber Costa , linux-mm@kvack.org, LKML Subject: Re: linux-next: slab shrinkers: BUG at mm/list_lru.c:92 Message-Id: <20130708140419.d9079dd67111090beb6cef3d@linux-foundation.org> In-Reply-To: <20130708125352.GC20149@dhcp22.suse.cz> References: <20130629025509.GG9047@dastard> <20130630183349.GA23731@dhcp22.suse.cz> <20130701012558.GB27780@dastard> <20130701075005.GA28765@dhcp22.suse.cz> <20130701081056.GA4072@dastard> <20130702092200.GB16815@dhcp22.suse.cz> <20130702121947.GE14996@dastard> <20130702124427.GG16815@dhcp22.suse.cz> <20130703112403.GP14996@dastard> <20130704163643.GF7833@dhcp22.suse.cz> <20130708125352.GC20149@dhcp22.suse.cz> X-Mailer: Sylpheed 3.2.0beta5 (GTK+ 2.24.10; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 8 Jul 2013 14:53:52 +0200 Michal Hocko wrote: > > Good news! The test was running since morning and it didn't hang nor > > crashed. So this really looks like the right fix. It will run also > > during weekend to be 100% sure. But I guess it is safe to say > > Hmm, it seems I was too optimistic or we have yet another issue here (I > guess the later is more probable). > > The weekend testing got stuck as well. > > The dmesg shows there were some hung tasks: That looks like the classic "we lost an IO completion" trace. I think it would be prudent to defer these patches into 3.12. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx158.postini.com [74.125.245.158]) by kanga.kvack.org (Postfix) with SMTP id 114426B0034 for ; Mon, 8 Jul 2013 17:04:21 -0400 (EDT) Date: Mon, 8 Jul 2013 14:04:19 -0700 From: Andrew Morton Subject: Re: linux-next: slab shrinkers: BUG at mm/list_lru.c:92 Message-Id: <20130708140419.d9079dd67111090beb6cef3d@linux-foundation.org> In-Reply-To: <20130708125352.GC20149@dhcp22.suse.cz> References: <20130629025509.GG9047@dastard> <20130630183349.GA23731@dhcp22.suse.cz> <20130701012558.GB27780@dastard> <20130701075005.GA28765@dhcp22.suse.cz> <20130701081056.GA4072@dastard> <20130702092200.GB16815@dhcp22.suse.cz> <20130702121947.GE14996@dastard> <20130702124427.GG16815@dhcp22.suse.cz> <20130703112403.GP14996@dastard> <20130704163643.GF7833@dhcp22.suse.cz> <20130708125352.GC20149@dhcp22.suse.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: Dave Chinner , Glauber Costa , linux-mm@kvack.org, LKML On Mon, 8 Jul 2013 14:53:52 +0200 Michal Hocko wrote: > > Good news! The test was running since morning and it didn't hang nor > > crashed. So this really looks like the right fix. It will run also > > during weekend to be 100% sure. But I guess it is safe to say > > Hmm, it seems I was too optimistic or we have yet another issue here (I > guess the later is more probable). > > The weekend testing got stuck as well. > > The dmesg shows there were some hung tasks: That looks like the classic "we lost an IO completion" trace. I think it would be prudent to defer these patches into 3.12. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org