Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752711Ab1CNKww (ORCPT ); Mon, 14 Mar 2011 06:52:52 -0400 Received: from smtp-tls2.univ-nantes.fr ([193.52.101.146]:37803 "EHLO smtp-tls.univ-nantes.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751721Ab1CNKwt (ORCPT ); Mon, 14 Mar 2011 06:52:49 -0400 X-Greylist: delayed 405 seconds by postgrey-1.27 at vger.kernel.org; Mon, 14 Mar 2011 06:52:49 EDT Message-ID: <4D7DF1A3.6020501@univ-nantes.fr> Date: Mon, 14 Mar 2011 11:44:51 +0100 From: Yann Dupont User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.15pre) Gecko/20110207 Shredder/3.1.9pre MIME-Version: 1.0 To: Eric Dumazet CC: linux-kernel@vger.kernel.org, netdev Subject: Re: kernel 2.6.37 : oops in cleanup_once References: <4D491B8D.1000107@univ-nantes.fr> <1296643972.20445.9.camel@edumazet-laptop> <1296645887.20445.11.camel@edumazet-laptop> <4D495765.4090806@univ-nantes.fr> <1296658407.20445.19.camel@edumazet-laptop> <4D49726C.6020103@univ-nantes.fr> <1296659336.20445.22.camel@edumazet-laptop> In-Reply-To: <1296659336.20445.22.camel@edumazet-laptop> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 953 Lines: 35 Le 02/02/2011 16:08, Eric Dumazet a écrit : > I suspect a mem corruption from another layer (not inetpeer) > > Unfortunately many kmem caches share the "64 bytes" cache. > > Could you please add "slub_nomerge" on your boot command ? > ... > >> -Is there a very severe impact on performance ? >> > not at all > Maybe there is an impact after all : since then, we don't have problems anymore ! linkwood:~# uptime 11:42:03 up 39 days, 17:08, 3 users, load average: 0.01, 0.03, 0.05 So... could slub_nomerge hide or simply avoid the problem ? Or are we just lucky this time ? -- Yann Dupont - Service IRTS, DSI Université de Nantes Tel : 02.53.48.49.20 - Mail/Jabber : Yann.Dupont@univ-nantes.fr -- 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/