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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 5523BC28CF6 for ; Wed, 1 Aug 2018 08:29:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 089B520844 for ; Wed, 1 Aug 2018 08:29:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="bw0HjeNQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 089B520844 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388737AbeHAKNg (ORCPT ); Wed, 1 Aug 2018 06:13:36 -0400 Received: from mail-pf1-f179.google.com ([209.85.210.179]:40941 "EHLO mail-pf1-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387836AbeHAKNf (ORCPT ); Wed, 1 Aug 2018 06:13:35 -0400 Received: by mail-pf1-f179.google.com with SMTP id e13-v6so7471994pff.7; Wed, 01 Aug 2018 01:29:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=u5VhfdgDn04a9GD5iPt4Mu70MTNBTOj6OhGSXRFGVK4=; b=bw0HjeNQ+HdPVub/7QlqNnSyu1LVhWG5x2KjLlQvEFae8Gc3qNsT9RaIgupNXi42AB YLSrgNOCyX5Hx5lLY8YdqVWHAMWsWiwYcbf+GJHOg23ktRVWZ7q6q+4MJe9Ab6WrkZiZ 1ZlfG1QB4obKTKeLDNUJ9OHjIf07+mtpDjg3OH29bkp/l35dSAY9TMM/EiOdxthQafZ6 nvb2eF80heD7lf66TAqZygyE8LGIzV5iLj5Y8TY6HemDatu+MX3oEqo9TZXw3iU7f7aU y+xTyaEVupS2OrU7ygtyt1oWwAF57z1quvreBsGcc6+pipm8ZccEupYUmcsoCSv0vGTo cnng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=u5VhfdgDn04a9GD5iPt4Mu70MTNBTOj6OhGSXRFGVK4=; b=s0jPHVsTSvS/X8luLIdsBcq8ED//t1oJ1b87etplhdObR7uVWR1mKNm24rmNNae5U/ AqHz94rlffucN8mXpIDvdKEx18unwprudlE5iZUf+tvjHzQ8qHLjC048Kw4bicK9lYn3 cYUCzBzregXQc6S9tidytLofGbIOYM9Elo5tgU9RCkbYzaqUwA81IU3Jgt2jTGd7BY4F TQNbvy+FyqvOHpwfrRmmdaedBPwo6JrTEdwej0j8vNeqsPg2Gylzb+4W72aSJ3G0zqBS l26TBZPN0yK/FE01BeTvxtOQBEOmSMFe5NfZ2OABGTw7hiEYXOjMmk5Wvu+gVXfnSktF 4oug== X-Gm-Message-State: AOUpUlF/6MiVmNxmjcUG+cLbrao/8v8LR6+bHSgw4KvB6kvSLYGp0zON Ri/2N2Q6H9bxb57MNF+hhNg= X-Google-Smtp-Source: AAOMgpcjJUcXI+DDjLRnrtCJg80jXg44VTNciRc2/PRyWwp7nzxK5sK/drcoIU6rg88VY/JMuk3X3A== X-Received: by 2002:a63:ba43:: with SMTP id l3-v6mr22885647pgu.295.1533112141543; Wed, 01 Aug 2018 01:29:01 -0700 (PDT) Received: from swr12sw01.cumulusnetworks.com ([216.129.126.118]) by smtp.googlemail.com with ESMTPSA id j22-v6sm21707658pfh.45.2018.08.01.01.28.57 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 01 Aug 2018 01:29:00 -0700 (PDT) Subject: Re: KASAN: use-after-free Read in rtnetlink_put_metrics To: Sabrina Dubroca , Cong Wang Cc: Eric Dumazet , syzbot+41f9c04b50ef70c66947@syzkaller.appspotmail.com, christian.brauner@ubuntu.com, David Miller , Florian Westphal , Jiri Benc , Kirill Tkhai , LKML , lucien xin , Linux Kernel Network Developers , syzkaller-bugs@googlegroups.com References: <0000000000004fe2be05724ac084@google.com> <20180731134014.GA32114@bistromath.localdomain> <20180801081537.GA31982@bistromath.localdomain> From: David Ahern Message-ID: <18196855-1085-9c70-fc58-fdcbe4060d21@gmail.com> Date: Wed, 1 Aug 2018 10:28:54 +0200 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20180801081537.GA31982@bistromath.localdomain> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 8/1/18 10:15 AM, Sabrina Dubroca wrote: > ip -net peerA route add fec0:B::/64 via fec0:A:: mtu 1300 I am on vacation right now with limited access to internet, so not able to take a look. In submitting the fib6_info changes I did tests like this and did not see memleak reports (and verified the metrics refcnts with printks), so I am surprised to see your patch in this area. Will take a look when I can but that will not be for a couple more weeks.