Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752005AbbEFWLZ (ORCPT ); Wed, 6 May 2015 18:11:25 -0400 Received: from mailin.studentenwerk.mhn.de ([141.84.225.229]:45498 "EHLO email.studentenwerk.mhn.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750868AbbEFWLX convert rfc822-to-8bit (ORCPT ); Wed, 6 May 2015 18:11:23 -0400 From: Wolfgang Walter To: Cong Wang Cc: LKML , Hannes Frederic Sowa , Linux Kernel Network Developers Subject: Re: kernel >= 4.0: crashes when using traceroute6 with isatap Date: Thu, 07 May 2015 00:11:20 +0200 Message-ID: <1489362.AtetvSCXN1@h2o.as.studentenwerk.mhn.de> User-Agent: KMail/4.14.2 (Linux/3.13.11-031311-generic; KDE/4.14.2; i686; ; ) In-Reply-To: References: <1770409.aMESoOv08f@h2o.as.studentenwerk.mhn.de> <1958390.Ugr57PpLDS@h2o.as.studentenwerk.mhn.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8BIT Content-Type: text/plain; charset="iso-8859-1" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1092 Lines: 41 Am Mittwoch, 6. Mai 2015, 11:15:18 schrieben Sie: > (Cc'ing netdev.) > > On Sat, May 2, 2015 at 5:29 AM, Wolfgang Walter wrote: > > Am Samstag, 2. Mai 2015, 02:16:36 schrieb Wolfgang Walter: > >> Hello, > >> > >> kernel 4.0 (and 4.0.1) crashes immediately when I use traceroute6 with an > >> isatap-tunnel. > > > > I did some further tests. To trigger the crash you need > > > > * isatap-tunnel (probably any sit-tunnel will do it) > > * raw-socket > > * udp > > > > Using icmpv6 or tcp i.e. does not trigger it. > > Do you have a script to reproduce it? > > > Thanks for the bug report! You need a isatap-server with say ipv4-address $X Then, on host with 4.0, start isatapd: isatapd --mtu 1280 $X then do traceroute6 www.google.de Regards, -- Wolfgang Walter Studentenwerk M?nchen Anstalt des ?ffentlichen Rechts -- 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/