From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail6.bemta8.messagelabs.com (mail6.bemta8.messagelabs.com [216.82.243.55]) by kanga.kvack.org (Postfix) with ESMTP id AD4BE6B002D for ; Mon, 21 Nov 2011 15:32:52 -0500 (EST) Message-ID: <1321907275.13860.12.camel@pasglop> Subject: Re: WARNING: at mm/slub.c:3357, kernel BUG at mm/slub.c:3413 From: Benjamin Herrenschmidt Date: Tue, 22 Nov 2011 07:27:55 +1100 In-Reply-To: <20111121195113.GA1678@x4.trippels.de> References: <20111121131531.GA1679@x4.trippels.de> <1321884966.10470.2.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <20111121153621.GA1678@x4.trippels.de> <1321890510.10470.11.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <20111121161036.GA1679@x4.trippels.de> <1321894353.10470.19.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <1321895706.10470.21.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <20111121173556.GA1673@x4.trippels.de> <1321900743.10470.31.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <20111121185215.GA1673@x4.trippels.de> <20111121195113.GA1678@x4.trippels.de> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit Mime-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: Markus Trippelsdorf Cc: Eric Dumazet , "Alex,Shi" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , Christoph Lameter , Pekka Enberg , Matt Mackall , "netdev@vger.kernel.org" , Tejun Heo , Christian Kujau On Mon, 2011-11-21 at 20:51 +0100, Markus Trippelsdorf wrote: > On 2011.11.21 at 19:52 +0100, Markus Trippelsdorf wrote: > > On 2011.11.21 at 19:39 +0100, Eric Dumazet wrote: > > > Le lundi 21 novembre 2011 A 18:35 +0100, Markus Trippelsdorf a A(C)crit : > > > > > > > New one: > > > > > > ... > > > > > > I was just wondering if you were using CONFIG_CGROUPS=y, and if yes, if > > > you could try to disable it. > > > > # CONFIG_CGROUPS is not set > > > > (I never enable CGROUPS on my machines) > > Just for the record, I've attached full dmesg and my .config. > (Will continue testing tomorrow) Note that I hit a similar looking crash (sorry, I couldn't capture a backtrace back then) on a PowerMac G5 (ppc64) while doing a large rsync transfer yesterday with -rc2-something (cfcfc9ec) and Christian Kujau (CC) seems to be able to reproduce something similar on some other ppc platform (Christian, what is your setup ?) We haven't hit the poison checks, more like bad pointer derefs, almost always in SLUB coming from skb alloc or free. In my case, it's not easy to reproduce, so a bisection would be error-prone. Cheers, Ben. -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756325Ab1KUUdK (ORCPT ); Mon, 21 Nov 2011 15:33:10 -0500 Received: from gate.crashing.org ([63.228.1.57]:55304 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752502Ab1KUUdI (ORCPT ); Mon, 21 Nov 2011 15:33:08 -0500 Message-ID: <1321907275.13860.12.camel@pasglop> Subject: Re: WARNING: at mm/slub.c:3357, kernel BUG at mm/slub.c:3413 From: Benjamin Herrenschmidt To: Markus Trippelsdorf Cc: Eric Dumazet , "Alex,Shi" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , Christoph Lameter , Pekka Enberg , Matt Mackall , "netdev@vger.kernel.org" , Tejun Heo , Christian Kujau Date: Tue, 22 Nov 2011 07:27:55 +1100 In-Reply-To: <20111121195113.GA1678@x4.trippels.de> References: <20111121131531.GA1679@x4.trippels.de> <1321884966.10470.2.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <20111121153621.GA1678@x4.trippels.de> <1321890510.10470.11.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <20111121161036.GA1679@x4.trippels.de> <1321894353.10470.19.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <1321895706.10470.21.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <20111121173556.GA1673@x4.trippels.de> <1321900743.10470.31.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <20111121185215.GA1673@x4.trippels.de> <20111121195113.GA1678@x4.trippels.de> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.1- Content-Transfer-Encoding: 8bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2011-11-21 at 20:51 +0100, Markus Trippelsdorf wrote: > On 2011.11.21 at 19:52 +0100, Markus Trippelsdorf wrote: > > On 2011.11.21 at 19:39 +0100, Eric Dumazet wrote: > > > Le lundi 21 novembre 2011 à 18:35 +0100, Markus Trippelsdorf a écrit : > > > > > > > New one: > > > > > > ... > > > > > > I was just wondering if you were using CONFIG_CGROUPS=y, and if yes, if > > > you could try to disable it. > > > > # CONFIG_CGROUPS is not set > > > > (I never enable CGROUPS on my machines) > > Just for the record, I've attached full dmesg and my .config. > (Will continue testing tomorrow) Note that I hit a similar looking crash (sorry, I couldn't capture a backtrace back then) on a PowerMac G5 (ppc64) while doing a large rsync transfer yesterday with -rc2-something (cfcfc9ec) and Christian Kujau (CC) seems to be able to reproduce something similar on some other ppc platform (Christian, what is your setup ?) We haven't hit the poison checks, more like bad pointer derefs, almost always in SLUB coming from skb alloc or free. In my case, it's not easy to reproduce, so a bisection would be error-prone. Cheers, Ben. From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt Subject: Re: WARNING: at mm/slub.c:3357, kernel BUG at mm/slub.c:3413 Date: Tue, 22 Nov 2011 07:27:55 +1100 Message-ID: <1321907275.13860.12.camel@pasglop> References: <20111121131531.GA1679@x4.trippels.de> <1321884966.10470.2.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <20111121153621.GA1678@x4.trippels.de> <1321890510.10470.11.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <20111121161036.GA1679@x4.trippels.de> <1321894353.10470.19.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <1321895706.10470.21.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <20111121173556.GA1673@x4.trippels.de> <1321900743.10470.31.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <20111121185215.GA1673@x4.trippels.de> <20111121195113.GA1678@x4.trippels.de> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Cc: Eric Dumazet , "Alex,Shi" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , Christoph Lameter , Pekka Enberg , Matt Mackall , "netdev@vger.kernel.org" , Tejun Heo , Christian Kujau To: Markus Trippelsdorf Return-path: In-Reply-To: <20111121195113.GA1678@x4.trippels.de> Sender: owner-linux-mm@kvack.org List-Id: netdev.vger.kernel.org On Mon, 2011-11-21 at 20:51 +0100, Markus Trippelsdorf wrote: > On 2011.11.21 at 19:52 +0100, Markus Trippelsdorf wrote: > > On 2011.11.21 at 19:39 +0100, Eric Dumazet wrote: > > > Le lundi 21 novembre 2011 =C3=A0 18:35 +0100, Markus Trippelsdorf a= =C3=A9crit : > > >=20 > > > > New one: > > >=20 > > > ... > > >=20 > > > I was just wondering if you were using CONFIG_CGROUPS=3Dy, and if y= es, if > > > you could try to disable it. > >=20 > > # CONFIG_CGROUPS is not set > >=20 > > (I never enable CGROUPS on my machines) >=20 > Just for the record, I've attached full dmesg and my .config. > (Will continue testing tomorrow) Note that I hit a similar looking crash (sorry, I couldn't capture a backtrace back then) on a PowerMac G5 (ppc64) while doing a large rsync transfer yesterday with -rc2-something (cfcfc9ec) and=20 Christian Kujau (CC) seems to be able to reproduce something similar on some other ppc platform (Christian, what is your setup ?) We haven't hit the poison checks, more like bad pointer derefs, almost always in SLUB coming from skb alloc or free. In my case, it's not easy to reproduce, so a bisection would be error-prone. Cheers, Ben. -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter= .ca/ Don't email: email@kvack.org