From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D81A4C43381 for ; Wed, 6 Mar 2019 22:28:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9A51220663 for ; Wed, 6 Mar 2019 22:28:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726763AbfCFW2V (ORCPT ); Wed, 6 Mar 2019 17:28:21 -0500 Received: from shards.monkeyblade.net ([23.128.96.9]:42326 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726715AbfCFW2V (ORCPT ); Wed, 6 Mar 2019 17:28:21 -0500 Received: from localhost (unknown [IPv6:2601:601:9f80:35cd::d71]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 13B62105D37DD; Wed, 6 Mar 2019 14:28:21 -0800 (PST) Date: Wed, 06 Mar 2019 14:28:18 -0800 (PST) Message-Id: <20190306.142818.1045935324715292108.davem@davemloft.net> To: captwiggum@gmail.com Cc: netdev@vger.kernel.org Subject: Re: TAHI testing fails for IPv6 Fragments in Kernel 4.9 From: David Miller In-Reply-To: References: X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Wed, 06 Mar 2019 14:28:21 -0800 (PST) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Captain Wiggum Date: Wed, 6 Mar 2019 15:26:43 -0700 > We are using the TAHI Self-test tools from IPv6 Ready Logo Program: > https://www.ipv6ready.org/?page=documents&tag=ipv6-core-protocols > > The test passed up to 4.9.133, then fails ever since. > > The are about 20 failing test cases regarding IPv6 fragments, > where the kernel is issuing an ICMPv6 parameter problem pointing > to the Fragmentation Header. > > I see lots of commits regarding improving fragment processing. > Has anyone else run TAHI tests on kernel 4.9 or later? > Is there any interest in looking into this to improve > the IPv6 functionality? It is intentionally failing those tests to fix a denial of service issue with ipv6 fragmentation and this will therefore not be changed.