Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760294AbcLBL5e (ORCPT ); Fri, 2 Dec 2016 06:57:34 -0500 Received: from mx1.redhat.com ([209.132.183.28]:49428 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757860AbcLBL5d (ORCPT ); Fri, 2 Dec 2016 06:57:33 -0500 Date: Fri, 2 Dec 2016 12:57:31 +0100 From: Artem Savkov To: Don Bowman Cc: linux-kernel@vger.kernel.org Subject: Re: [PATCH] ip6_offload: check segs for NULL in ipv6_gso_segment. Message-ID: <20161202115731.ydq322564t62g7jd@shodan.usersys.redhat.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20161126 (1.7.1) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Fri, 02 Dec 2016 11:57:32 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 635 Lines: 27 On Thu, Dec 01, 2016 at 09:47:17PM -0500, Don Bowman wrote: > I have been having this problem (4.9rc6). > I applied this patch. > I still have the problem. > > My stack trace (attached as image, i did not get it in text) is: > > ipv6_gso_segment > skb_mac_gso_segment > __skb_gso_segment > validate_xmit_skb > sch_direct_xmit > __dev_queue_xmit > macvlan_start > > .. > > I think the macvlan is important (it does not seem to occur on my VM > that are not macvtap). I don't see any way that the same problem may get reproduced in ipv6_gso_segment with that patch applied, so this must be a different issue. -- Regards, Artem