From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail6.bemta7.messagelabs.com (mail6.bemta7.messagelabs.com [216.82.255.55]) by kanga.kvack.org (Postfix) with ESMTP id 465B56B002D for ; Mon, 21 Nov 2011 16:31:02 -0500 (EST) Received: by vbbfq11 with SMTP id fq11so3917927vbb.14 for ; Mon, 21 Nov 2011 13:30:59 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <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> <1321907275.13860.12.camel@pasglop> Date: Mon, 21 Nov 2011 23:30:59 +0200 Message-ID: Subject: Re: WARNING: at mm/slub.c:3357, kernel BUG at mm/slub.c:3413 From: Pekka Enberg Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: To: Benjamin Herrenschmidt Cc: Markus Trippelsdorf , Eric Dumazet , "Alex,Shi" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , Christoph Lameter , 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 =E0 18:35 +0100, Markus Trippelsdorf a =E9= crit : >> > > >> > > > New one: >> > > >> > > ... >> > > >> > > I was just wondering if you were using CONFIG_CGROUPS=3Dy, and if ye= s, 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) On Mon, Nov 21, 2011 at 10:27 PM, Benjamin Herrenschmidt wrote: > 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. Does CONFIG_SLAB make all the issues go away or are you still able to reproduce corruption with it? I'm asking because we have the per-cpu partial list patches in 3.2-rc1 and I'd like to rule them out as a suspect. Pekka -- 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