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=-4.1 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 9E37BC433DF for ; Sat, 8 Aug 2020 20:53:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 71B4B206B5 for ; Sat, 8 Aug 2020 20:53:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596919982; bh=8P4V/wgKPRmDXC23dYi4K9MiJnFOVzTo7j09KGhT1FY=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=V2WH5+/eIa+hbbwWAZRWxJvRVIS8c+1C6/Mk2oLcS2HZQiG6yCFk7jAsMjhlZBQhl GZ9GqIY9XaZJzDWLkM85Uimsa8Qet4CZEhxEEcFfaA6mr8WSr1BeezlKKasbJzsJSO z+h7C1InhFWWHj/DJa752yKyX+y7J4/0ET4bVwUE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726246AbgHHUxB (ORCPT ); Sat, 8 Aug 2020 16:53:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41992 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726200AbgHHUw6 (ORCPT ); Sat, 8 Aug 2020 16:52:58 -0400 Received: from mail-lj1-x244.google.com (mail-lj1-x244.google.com [IPv6:2a00:1450:4864:20::244]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F24D4C061756 for ; Sat, 8 Aug 2020 13:52:57 -0700 (PDT) Received: by mail-lj1-x244.google.com with SMTP id g6so5673422ljn.11 for ; Sat, 08 Aug 2020 13:52:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=OB3GAa0Qn78dNiugi5A9sq+A1ic7+l5Zp7oAIGdm1hE=; b=BrBh1idcKULXXVVWwi6j4605pTX1qIR3kjUj/BP+PpMd8rTlFjAgByIkLqtYda9b3u E3g+pifNEDu3LTDg5EiXR6wehY5pqWbB3xWiDVkoL/gcqjTGrXTp4pwOw/jgsqVsgc+Q PJ5VDC4cgYFujnmogaqb9cfB6udj5xr+85LAs= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=OB3GAa0Qn78dNiugi5A9sq+A1ic7+l5Zp7oAIGdm1hE=; b=FaUmkg5FA/Nm9doJx1uxNUyB15rFO8twIRgL/KEdJnANSD87Q5Aj5ejVmM+4WfJ37C Jycgk2r/O7YgQIu97rkVTRu0vnesG5Z9GTYRJ0qar3flqL6V7lhKyVOUcQx4+JJ1noLt eLMaGSvCo4K1/AFSzrnDkK3sXZgR1RvisTbsOyAgwmcGmOA6uPb7cPrcsc2WcMqRrHDF zvqtAv0S2AZZEQ+VceBUhQACoePrFGupcJIcqd04idXwC0fk8h61lycccVaJHlgHZXrE G/Nvx6I+B4oG4woXEs3DlsBEFd5pSBucsdy79BqxbcTGdx362jdqrjj30GTrLAyWHh6r wBig== X-Gm-Message-State: AOAM5304DkKaMkXatB+ZKt93NUOg803Lg9iA8XiEo1TugVQCJB2gJwQ1 NCFNsE9zIbwxKX8qv+yb5REteH3jVRs= X-Google-Smtp-Source: ABdhPJxyjKX2hnYKR4Ql0cUP7oxbNn2nKgBvrSgiQPcE2Cq/6k2C39I4OnjHHxrfKjjYUq78GulNIQ== X-Received: by 2002:a05:651c:d0:: with SMTP id 16mr9316947ljr.313.1596919975836; Sat, 08 Aug 2020 13:52:55 -0700 (PDT) Received: from mail-lf1-f42.google.com (mail-lf1-f42.google.com. [209.85.167.42]) by smtp.gmail.com with ESMTPSA id 80sm5599244ljf.38.2020.08.08.13.52.53 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 08 Aug 2020 13:52:54 -0700 (PDT) Received: by mail-lf1-f42.google.com with SMTP id 140so2769278lfi.5 for ; Sat, 08 Aug 2020 13:52:53 -0700 (PDT) X-Received: by 2002:a19:408d:: with SMTP id n135mr9293411lfa.192.1596919973318; Sat, 08 Aug 2020 13:52:53 -0700 (PDT) MIME-Version: 1.0 References: <20200808152628.GA27941@SDF.ORG> <20200808174451.GA7429@1wt.eu> <20200808204729.GD27941@SDF.ORG> In-Reply-To: <20200808204729.GD27941@SDF.ORG> From: Linus Torvalds Date: Sat, 8 Aug 2020 13:52:37 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: Flaw in "random32: update the net random state on interrupt and activity" To: George Spelvin Cc: Willy Tarreau , Netdev , Amit Klein , Eric Dumazet , "Jason A. Donenfeld" , Andrew Lutomirski , Kees Cook , Thomas Gleixner , Peter Zijlstra , "Theodore Ts'o" , Marc Plumb , Stephen Hemminger Content-Type: text/plain; charset="UTF-8" Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Sat, Aug 8, 2020 at 1:47 PM George Spelvin wrote: > > I *just* finished explaining, using dribs and drabs of entropy allows an > *information theoretical attack* which *no* crypto can prevent. The key word here being "theoretical". The other key word is "reality". We will have to agree to disagree. I don't _care_ about the theoretical holes. I care about the real ones. We plugged a real one. Deal with it. Linus