From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751804AbeFEJIr (ORCPT ); Tue, 5 Jun 2018 05:08:47 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:36450 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751671AbeFEJIn (ORCPT ); Tue, 5 Jun 2018 05:08:43 -0400 Date: Tue, 5 Jun 2018 11:08:36 +0200 From: Stefano Brivio To: kernel test robot Cc: Steffen Klassert , Xin Long , LKML , Linus Torvalds , lkp@01.org Subject: Re: [lkp-robot] [vti6] b4331a6818: kernel_selftests.net.pmtu.sh.fail Message-ID: <20180605110836.4307eb3c@epycfail> In-Reply-To: <20180605070927.GN16472@yexl-desktop> References: <20180605070927.GN16472@yexl-desktop> Organization: Red Hat MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 5 Jun 2018 15:09:27 +0800 kernel test robot wrote: > FYI, we noticed the following commit (built with gcc-7): > > commit: b4331a681822b420511b3258f1c3db35001fde48 ("vti6: Change minimum MTU to IPV4_MIN_MTU, vti6 can carry IPv4 too") > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master > > [...] > > caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): > > > selftests: pmtu.sh > ======================================== > TEST: vti6: PMTU exceptions [ OK ] > TEST: vti4: PMTU exceptions [ OK ] > TEST: vti4: default MTU assignment [ OK ] > TEST: vti6: default MTU assignment [ OK ] > TEST: vti4: MTU setting on link creation [ OK ] > TEST: vti6: MTU setting on link creation [FAIL] > vti6 tunnel created with invalid MTU 1279 This is solved by net-next.git commit 5a643c861d0f ("selftests: pmtu: Minimum MTU for vti6 is 68"), which should get merged into net.git soon. -- Stefano