Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758873Ab1D0LwY (ORCPT ); Wed, 27 Apr 2011 07:52:24 -0400 Received: from daemonizer.de ([178.77.99.65]:35714 "EHLO daemonizer.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756182Ab1D0LwX (ORCPT ); Wed, 27 Apr 2011 07:52:23 -0400 From: Maximilian Engelhardt To: Eric Dumazet Subject: Re: Kernel crash after using new Intel NIC (igb) Date: Wed, 27 Apr 2011 13:51:59 +0200 User-Agent: KMail/1.13.5 (Linux/2.6.38-2-686; KDE/4.4.5; i686; ; ) Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, StuStaNet Vorstand References: <201104250033.03401.maxi@daemonizer.de> <1303878240.2699.41.camel@edumazet-laptop> <1303878771.2699.44.camel@edumazet-laptop> In-Reply-To: <1303878771.2699.44.camel@edumazet-laptop> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart4929018.egx1Hc6T0B"; protocol="application/pgp-signature"; micalg=pgp-sha512 Content-Transfer-Encoding: 7bit Message-Id: <201104271352.00601.maxi@daemonizer.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2723 Lines: 68 --nextPart4929018.egx1Hc6T0B Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Hello Eric, On Wednesday 27 April 2011 06:32:51 Eric Dumazet wrote: > Le mercredi 27 avril 2011 =C3=A0 06:24 +0200, Eric Dumazet a =C3=A9crit : > > 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. > >=20 > > 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. >=20 > Of course, the right option name is slub_nomerge >=20 > vi +2293 Documentation/kernel-parameters.txt >=20 > 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.tx= t. thank you for this information. I updated the kernel of the affected server= to=20 version 2.6.38.4 yesterday. I'll report when there are still crashes, but i= t=20 might take a while, as in the past they only happened within the interval o= f=20 weeks to month. Greetings, Maxi --nextPart4929018.egx1Hc6T0B Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABCgAGBQJNuANgAAoJEIHqZH0kK9IVhI4P/AjlzQ00sMy9YNrayhfa3I7n A2pSPvZ4S22TeGpdiHrmRxQKnSR3jpk2C7ukDcNcsnY3hz5WUcqEc58FHYfp/elQ zGHPdo/8xGpsm56TAHA7qJgakRNaeyHcocWEhu8Flbw1TCB8CFkTfU38prUdWLJQ i7rz/k1A5PlLeJfHMGGvK6oSfC7wP/Eew+sI5kquYn/bddKQMo+sgFttMfhpvvaQ dkwXtBeZVX5QWP8QztzQiJbv2a+dqCfO4h/fj6NJfPlyifFYgSpC5LW7xFDHqxNM NSDxhoWfbbV6Tl4CSyTUHdzWU+NGJfJkXe95iWhjUnNmm9d/lMa7hwJdAEtPsQCM ydTb2YfEcjFe2w81IXoEdq6gS0AbNTsHkWVjfaIszUul9L3IOjijmPXxwWsTEr7n EfOhjYAMMNolraoA5k30HuJ8K2PiiBdvj7pWvCaEnblWpyG6q+2ZXgGOeL3GsTMm BUZLgIWlNJ8Y2QzQBuLPmk8sGSGwaPa/sbMCSAPO57hF7wkWup3IkKqzab1AqR52 OwWc1I13UEmCaorLAKYg+ZjKvJ0RytZP91WvJLs1fJcFiFZDkOYGZySHxGySz3HD b0IKHaQN2mS49YtKNiMFgHJfPu0Vxs+nu+lvxEn2sMVteWABjX5q9zzlsbr/ARKB 8oOuAjLq779KiezcXniV =Ydae -----END PGP SIGNATURE----- --nextPart4929018.egx1Hc6T0B-- -- 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/