From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiri Slaby Subject: 3.6: net circualr lockind dependence [was: 3.5 stable somewhere ?] Date: Fri, 05 Oct 2012 10:05:50 +0200 Message-ID: <506E94DE.6040507@suse.cz> References: <506DDFAC.5010900@opensuse.org> <506DEB58.5030707@suse.cz> <506E2369.4050908@opensuse.org> <506E2E50.3080205@opensuse.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: opensuse-kernel@opensuse.org, ML netdev To: =?UTF-8?B?Q3Jpc3RpYW4gUm9kcsOtZ3Vleg==?= Return-path: Received: from mail-wi0-f178.google.com ([209.85.212.178]:45214 "EHLO mail-wi0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751442Ab2JEIFy (ORCPT ); Fri, 5 Oct 2012 04:05:54 -0400 Received: by mail-wi0-f178.google.com with SMTP id hr7so264335wib.1 for ; Fri, 05 Oct 2012 01:05:52 -0700 (PDT) In-Reply-To: <506E2E50.3080205@opensuse.org> Sender: netdev-owner@vger.kernel.org List-ID: Adding netdev. (Cristian is seeing a circular locking dependence in 3.6= =2E) On 10/05/2012 02:48 AM, Cristian Rodr=C3=ADguez wrote: > El jue 04 oct 2012 21:01:45 CLST, Cristian Rodr=C3=ADguez escribi=C3=B3= : >> El 04/10/12 17:02, Jiri Slaby escribi=C3=B3: >>> On 10/04/2012 09:12 PM, Cristian Rodr=C3=ADguez wrote: >>>> BTW.. here is the crash.. is just a matter of generating a little >>>> load on apache2-event and something goes crazy. >>> >>> Is there a fix known? The traces below look pretty hopeless. Are th= ey >>> the first info printed? What's before them? >>> >> >> Do You have any hints how to proceed here ? I have both compiled cus= tom >> kernels and used SUSE packages plus >> >> kernel.softlockup_panic =3D 1 >> kernel.unknown_nmi_panic =3D 1 >> kernel.panic_on_unrecovered_nmi =3D 1 >> vm.panic_on_oom =3D 1 >> >> >> and kdump in order to get a workable backtrace, with no avail, machi= ne >> hangs and the kernel dump is never written. >=20 >=20 > With a debug kernel I get this at shutdown, but I am not sure it is=20 > related at all. Uploaded here: http://www.fi.muni.cz/~xslaby/sklad/panics/lockdep1.png --=20 js suse labs