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 CA7DAC43387 for ; Mon, 24 Dec 2018 00:01:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 90CDC218A1 for ; Mon, 24 Dec 2018 00:01:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726549AbeLXABi (ORCPT ); Sun, 23 Dec 2018 19:01:38 -0500 Received: from gateway32.websitewelcome.com ([192.185.145.189]:26084 "EHLO gateway32.websitewelcome.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725954AbeLXABi (ORCPT ); Sun, 23 Dec 2018 19:01:38 -0500 Received: from cm10.websitewelcome.com (cm10.websitewelcome.com [100.42.49.4]) by gateway32.websitewelcome.com (Postfix) with ESMTP id 487E436794 for ; Sun, 23 Dec 2018 18:01:37 -0600 (CST) Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with SMTP id bDgfgHYoA2PzObDgfg0dA4; Sun, 23 Dec 2018 18:01:37 -0600 X-Authority-Reason: nr=8 Received: from [189.250.106.44] (port=60436 helo=[192.168.1.76]) by gator4166.hostgator.com with esmtpsa (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.91) (envelope-from ) id 1gbDge-000gdN-LI; Sun, 23 Dec 2018 18:01:36 -0600 Subject: Re: [PATCH] net: core: Fix Spectre v1 vulnerability To: David Miller , alexei.starovoitov@gmail.com Cc: ast@kernel.org, daniel@iogearbox.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org References: <20181223041253.bxqru567rs32mecg@ast-mbp.dhcp.thefacebook.com> <20181223055959.jlzbyd5ec55thiz7@ast-mbp.dhcp.thefacebook.com> <20181223.155838.90910738750758535.davem@davemloft.net> From: "Gustavo A. R. Silva" Message-ID: <31dc24bd-ef31-6db4-d1b7-10f9d6619843@embeddedor.com> Date: Sun, 23 Dec 2018 18:01:35 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: <20181223.155838.90910738750758535.davem@davemloft.net> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 189.250.106.44 X-Source-L: No X-Exim-ID: 1gbDge-000gdN-LI X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: ([192.168.1.76]) [189.250.106.44]:60436 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 6 X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/23/18 5:58 PM, David Miller wrote: > From: Alexei Starovoitov > Date: Sat, 22 Dec 2018 22:00:00 -0800 > >> On Sat, Dec 22, 2018 at 11:03:31PM -0600, Gustavo A. R. Silva wrote: >>>> I took another look at the following patches: >>>> "net: core: Fix Spectre v1 vulnerability" >>>> "nfc: af_nfc: Fix Spectre v1 vulnerability" >>>> "can: af_can: Fix Spectre v1 vulnerability" >>>> and I have to say that none of them are necessary. >>>> I'm not sure whether there were other patches that pretend to fix spectre1. > ... >> in other words there is no bug and there is no vulnerability, >> but there is a 'policy' set by ... ? >> So hence Nack to the policy and Nack to the patches. > > I have to agree with Alexei after looking at all of this stuff one more > time. > > I'm reverting all of these changes. > Yeah. That's fine with me. Thanks -- Gustavo