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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, 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 B59D6C49ED7 for ; Tue, 17 Sep 2019 00:41:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7A6BA20665 for ; Tue, 17 Sep 2019 00:41:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=codon.org.uk header.i=@codon.org.uk header.b="KCiJ49Bm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732365AbfIQAlA (ORCPT ); Mon, 16 Sep 2019 20:41:00 -0400 Received: from cavan.codon.org.uk ([93.93.128.6]:47668 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726118AbfIQAlA (ORCPT ); Mon, 16 Sep 2019 20:41:00 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=codon.org.uk; s=63138784; h=Subject:Message-ID:From:CC:To: Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To: Date:Sender:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=dihqQD7YyeCHFuSd2ZY63lRCa0biQHHFoiX32AJkQOc=; b=KCiJ49BmtRanlAbRnpCcqbvlih tTFRLeONi8xeN/BdrtcelDsnfJByQwGor1b9F4xEPrwBsYBp5kRIebGADikf/tnqWf+ehtLQFMOd8 FKhgyXfZ8K07TpBW4ZqN2QVQPHN6WFt50d5UjDA72AdHoEzACsjK7IQbW07pnNvvisIU=; Received: from [216.9.110.8] (helo=[172.31.95.26]) by cavan.codon.org.uk with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1iA1Xo-0002KW-64; Tue, 17 Sep 2019 01:40:38 +0100 Date: Mon, 16 Sep 2019 17:40:23 -0700 User-Agent: K-9 Mail for Android In-Reply-To: References: <20190916014833.cbetw4sqm3lq4x6m@shells.gnugeneration.com> <20190916024904.GA22035@mit.edu> <20190916042952.GB23719@1wt.eu> <20190916061252.GA24002@1wt.eu> <20190916172117.GB15263@mit.edu> <20190916230217.vmgvsm6o2o4uq5j7@srcf.ucam.org> <20190916231103.bic65ab4ifv7vhio@srcf.ucam.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable To: Linus Torvalds CC: "Theodore Y. Ts'o" , Willy Tarreau , Vito Caputo , "Ahmed S. Darwish" , Lennart Poettering , Andreas Dilger , Jan Kara , Ray Strode , William Jon McCann , "Alexander E. Patrakov" , zhangjs , linux-ext4@vger.kernel.org, lkml From: Matthew Garrett Message-ID: <2BEA80F6-6EF5-42D8-8AAA-91D4FD545241@srcf.ucam.org> X-cavan-blacklisted-at: zen.spamhaus.org X-SA-Do-Not-Run: Yes X-SA-Exim-Connect-IP: 216.9.110.8 X-SA-Exim-Mail-From: mjg59@srcf.ucam.org Subject: Re: Linux 5.3-rc8 X-SA-Exim-Version: 4.2.1 (built Tue, 02 Aug 2016 21:08:31 +0000) X-SA-Exim-Scanned: No (on cavan.codon.org.uk); Unknown failure Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 16 September 2019 16:18:00 GMT-07:00, Linus Torvalds wrote: >On Mon, Sep 16, 2019 at 4:11 PM Matthew Garrett >wrote: >> >> In one case we have "Systems don't boot, but you can downgrade your >> kernel" and in the other case we have "Your cryptographic keys are >weak >> and you have no way of knowing unless you read dmesg", and I think >> causing boot problems is the better outcome here=2E > >Or: In one case you have a real and present problem=2E In the other >case, people are talking hypotheticals=2E (resending because accidental HTML, sorry about that)=20 We've been recommending that people use the default getrandom() behaviour = for key generation since it was merged=2E Github shows users, and it's like= ly there's cases in internal code as well=2E=20 --=20 Matthew Garrett | mjg59@srcf=2Eucam=2Eorg