Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752034Ab1D0Ec7 (ORCPT ); Wed, 27 Apr 2011 00:32:59 -0400 Received: from mail-ww0-f44.google.com ([74.125.82.44]:50983 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751300Ab1D0Ec5 (ORCPT ); Wed, 27 Apr 2011 00:32:57 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:from:to:cc:in-reply-to:references:content-type:date :message-id:mime-version:x-mailer:content-transfer-encoding; b=GIUfgkh6ZpYTNoPg0PYJ47+nhHvk74QHGUMxTfpO99D6um8ZBt/p4y+KVCK7DZSfUZ g4oIxjMYV71EfwxMYctplDh8y6qDPmOVDjR3+L4u+gI9BjETqxBwL279vFIkOrd3htuY 9AZimF3IjKCfmy7ZiEzdQe4KRa7zuVj+yxw+o= Subject: Re: Kernel crash after using new Intel NIC (igb) From: Eric Dumazet To: Maximilian Engelhardt Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, StuStaNet Vorstand In-Reply-To: <1303878240.2699.41.camel@edumazet-laptop> References: <201104250033.03401.maxi@daemonizer.de> <1303878240.2699.41.camel@edumazet-laptop> Content-Type: text/plain; charset="UTF-8" Date: Wed, 27 Apr 2011 06:32:51 +0200 Message-ID: <1303878771.2699.44.camel@edumazet-laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1183 Lines: 29 Le mercredi 27 avril 2011 à 06:24 +0200, Eric Dumazet a écrit : > We had similar reports in the past that disappeared when adding > "slab_nomerge" to boot parameters. We suspect a memory corruption from > another part of kernel on 64bytes kmemcache objects. > > In 2.6.37, inetpeer code uses 64bytes objects. Using slab_nomerge and > SLUB allocator (as you already do), makes sure inetpeer kmemcache wont > be shared by other 64bytes objects in kernel. > Of course, the right option name is slub_nomerge vi +2293 Documentation/kernel-parameters.txt slub_nomerge [MM, SLUB] Disable merging of slabs with similar size. May be necessary if there is some reason to distinguish allocs to different slabs. Debug options disable merging on their own. For more information see Documentation/vm/slub.txt. -- 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/