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=-8.5 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,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 CD2AEC433E2 for ; Mon, 7 Sep 2020 20:24:01 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id A0F93215A4 for ; Mon, 7 Sep 2020 20:24:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="Vf9HxRnj" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A0F93215A4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=gmx.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-19798-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 9320 invoked by uid 550); 7 Sep 2020 20:23:52 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Received: (qmail 26289 invoked from network); 7 Sep 2020 18:07:58 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1599502059; bh=7zF5NpWcH8s21/87X/Ym+6fJSfQf2cvf0ytrQcgPlcY=; h=X-UI-Sender-Class:Date:From:To:Cc:Subject:References:In-Reply-To; b=Vf9HxRnjoi1CmjydjRcaBBL0vJheixiX9wqMHcDv4UuoZZOhsfNALRandZGDQgAd1 kEbHGY2J98vTCwAl/Uj/kFGRFwj8h+KcFKNXR/Md6o1otMOlS4N73YyAYMWmZTqVBa pWARMSNopZ0y6w89mW0AfaKTCaA/xd/fDCtExbcs= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Date: Mon, 7 Sep 2020 20:07:26 +0200 From: John Wood To: Kees Cook , Matthew Wilcox Cc: kernel-hardening@lists.openwall.com, John Wood Subject: Re: [RFC PATCH 0/9] Fork brute force attack mitigation (fbfam) Message-ID: <20200907180726.GA3243@ubuntu> References: <20200906142029.6348-1-john.wood@gmx.com> <202009061323.75C4EC509F@keescook> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202009061323.75C4EC509F@keescook> X-Provags-ID: V03:K1:r20XgpBZGGlIYes1JuwUvIHb52ySfa/yF/3UAxfqvL2afg8psFP Q2mdi/dIifErvkekdX/r27PqHn9vVWRRZqvHeD+kZ6QQPpOdjXgYxO4rfDIrruhxCPxGqUC FgR3vavJSJD+kjPayfRt4xpjr31ih/1SpW2einud3Vg9dxK2M7JkWjjc9nhSPgGnjsY3S8Y AF7vKqLeCowcMlJIgP7bQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:mY5cKOoYAE4=:3EtrUYuFG0mSVvaFhHLttC OxzNV6qBxB6rQMqNvU7YcfTXIxRVpjLHqu9VS/59HfV92/RoLI7LtPrl/DDtpb3Nc99zkCT0Z cmJ22c3gAOKFm3+tU4YyZqMUGa5HtCWuwL9F09d3t43r4oIdXD+j+KIAmYZBq+pgxmHiB/dT9 y8joW4JfRfLqiOdh2OixoZdGdJpx4RG04WiGAkjBnbOGGgdXIJQcCIIN+Wz6wYg2l3VLThkjY pj8/gq/VZibPNtaO9/rdg6oep3nHBzAfrDJoeGJaeEqT/ZiI3kEU3HQVhf/PdRZw0va0slrMx iZNhGYxTfF1Z43Z8LTPgQFSU8EMZ4SkiOd/twmFmClKe3Hixu51vVz9yBUh1EyUcvgzb1K2Ab PmsiwLxoSmoH381aBOpAbqjndRhwW4eMxMJaVmxXWC+VX8VwQyLI4wELvolJLpRdwiIYCajG2 eebV62XPDSQg3gpngCvlS8E+GfKE6YioxWz4ScPv8BgFUdigx64+0sENH34Vc4GmJccQmqJDH NZG2M9N0ja0ikRvBPeGWQtLR4UYavCPfRk8CKZAcahIDxAcX54pIjmfPJJ4PVAblkcvQK46uO Ru1q2Y/RVTw9iP5u4nbocaNGdcnAK6KM/8yhpe8wrhrqeTIdi1U4gk5pkA+JYIkcXDbHFf77F jFh4uPshXB1iGQFWcpRj/rUX2NSNQt45qA4oiVb7J63IodkmCb1H6WYt8haHEiGv/yqtIoWV+ OZ2UUp7UrqnO0TF6gGILSh9+XrT1yuUUXv9AoB6k7Wp05gvheuQY9C4S1BTeCoO1gEOLogl5M 4cqCWzoydMWvwe6wtieju+2FPxvr6Ac/4YTMM8itvRRdeGQ96hAEotvCawGZcUG2qVAzQIYcu rZ6dZY20xew/72bahztc11MdcfoBAtl4LmBpan6MVolTbu/VcTeaQu2nWBw1MarR7BNcdqopW totm52hwdUhIoyMp7oAw86L9gAHIZ9uzJo6KOVIO3AQcaUQDhk6VrywxpSUkAuJM/5oqKXjt/ UuUyf3skbmst/dVCOUOIFtLXkIuUt+pW/STcU93K3FoGevdTDJC8I1uyxPI5XiPYEvZD6abgd EYAQRVuC4Rf9gYeEuegpicsFJQS4L26ESSnVknis8eZID27j80f6EoUz61MR3WwZUAhuJhYf9 RiPkTIFECkZSrpSHGWRLjFR4bP0HsQj66mIbCFcmdvEo9K6zus7oUlOffBdyggcBtI90KM4hK 0B4xKeNcYjyn03xheJeWswxHuwS6pvkzPOds3Uw== Content-Transfer-Encoding: quoted-printable Hi, On Sun, Sep 06, 2020 at 01:25:47PM -0700, Kees Cook wrote: > On Sun, Sep 06, 2020 at 04:20:20PM +0200, John Wood wrote: > > The goal of this patch serie is to detect and mitigate a fork brute fo= rce > > attack. > > I look forward to reviewing it on the list! :) In the meantime, you > could try adding this series as a branch on github (or whatever git > host) tree you have access to. That would allow contextual commenting > there too, if email continues to be a blocker. I've added this series as a branch on github. The branch's name is "fbfam"= . https://github.com/johwood/linux I hope this can allow a first review until Matthew send the series to the mailing list and I resolve the problems with my email account. Apologies. > > -- > Kees Cook Regards John Wood