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=-3.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 765DFC433E2 for ; Thu, 10 Sep 2020 23:58:50 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id ADA192065E for ; Thu, 10 Sep 2020 23:58:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="gfDQq0ZQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ADA192065E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-19876-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 13405 invoked by uid 550); 10 Sep 2020 23:58:44 -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 13385 invoked from network); 10 Sep 2020 23:58:43 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=TiD2LqrFMgU68bxi0s2xnUciJbQ2K0M9nK4+d+t39K8=; b=gfDQq0ZQqLUJ2DXD4GeetN5kOqP51hwBhKIkS41DxfjESdBN19BG5x+kfviKP/yh9X NBzaEVawSvptQ7Q4030RuEKgEvrEhYDi7bTC89bB7xG03X9rvK14W6PkRUtnT9UOr0Zn w2FsE0kcZLviYstxkTuTgVRezP064DYBbisLc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=TiD2LqrFMgU68bxi0s2xnUciJbQ2K0M9nK4+d+t39K8=; b=gcIVZq5OnTTqgtKAGQH+7ET4yukZ3Moh47Pfmy5ZqKKkOdzLHVafAbM7z0l2Gz1IEi rXNwPvl/4PissC1aMCkq2dHDQ3lHEWRnCL92J51rxh2ecC02wDjEaTVkAyuKudFaAkwb R9mZU0YDmrmT1GzlwFF6NrFahABIe1d2dD85J0RnFlA4YvqMAfcPlbenfwTLT/65dLlB K5iX+8nUV6F2hmPhLJhKXQaUmyNTafieDj8/4uI/eh4eNCGBIoMO5l5137K+HkSckNPc EMlh9zMtr1colpoGQer1LtoIqlcb7e+KZ7V5DsH4BhfHakA3RgrHEV3ZHGj3zbSClzSr 2K4g== X-Gm-Message-State: AOAM5337Z1DDeMOsK8kgi/9xTd/ld2vTz1jy9Mr2WHzXljxQ/su2Cv4S 7zruOB8IIk9ruITcleoxycP/VQ== X-Google-Smtp-Source: ABdhPJx7/8vv2eB24dRiaLxWkU+dxFBXMvFoW+hNl5OQ5bHZLnmTBQqdIzH3CPNupiTU/enKTlQaQg== X-Received: by 2002:a17:902:b216:: with SMTP id t22mr8241168plr.35.1599782311659; Thu, 10 Sep 2020 16:58:31 -0700 (PDT) Date: Thu, 10 Sep 2020 16:58:29 -0700 From: Kees Cook To: kernel-hardening@lists.openwall.com Cc: John Wood , Matthew Wilcox , Jonathan Corbet , Alexander Viro , Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Luis Chamberlain , Iurii Zaikin , James Morris , "Serge E. Hallyn" , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-security-module@vger.kernel.org Subject: Re: [RESEND][RFC PATCH 0/6] Fork brute force attack mitigation (fbfam) Message-ID: <202009101656.FB68C6A@keescook> References: <20200910202107.3799376-1-keescook@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200910202107.3799376-1-keescook@chromium.org> On Thu, Sep 10, 2020 at 01:21:01PM -0700, Kees Cook wrote: > From: John Wood > > The goal of this patch serie is to detect and mitigate a fork brute force > attack. Thanks for this RFC! I'm excited to get this problem finally handled in the kernel. Hopefully the feedback is useful. :) -- Kees Cook