From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1752775AbdKMWJN (ORCPT <rfc822;w@1wt.eu>);
        Mon, 13 Nov 2017 17:09:13 -0500
Received: from mail-it0-f50.google.com ([209.85.214.50]:53546 "EHLO
        mail-it0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1751247AbdKMWJL (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Mon, 13 Nov 2017 17:09:11 -0500
X-Google-Smtp-Source: AGs4zMZYr0M74Epcr5/1B/WpS98wwbyItM0QkASiaqduSoC5p4YQMYYwVbMXf+aRUKr3vkZ5mn/eO/QCMOob++/6kZg=
MIME-Version: 1.0
In-Reply-To: <454.1510609487@warthog.procyon.org.uk>
References: <150842463163.7923.11081723749106843698.stgit@warthog.procyon.org.uk>
 <14219.1509660259@warthog.procyon.org.uk> <1509660641.3416.24.camel@linux.vnet.ibm.com>
 <20171107230700.GJ22894@wotan.suse.de> <20171108061551.GD7859@linaro.org>
 <20171108194626.GQ22894@wotan.suse.de> <20171109014841.GF7859@linaro.org>
 <1510193857.4484.95.camel@linux.vnet.ibm.com> <20171109044619.GG7859@linaro.org>
 <20171111023240.2398ca55@alans-desktop> <20171113174250.GA22894@wotan.suse.de>
 <20171113210848.4dc344bd@alans-desktop> <454.1510609487@warthog.procyon.org.uk>
From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Mon, 13 Nov 2017 14:09:10 -0800
X-Google-Sender-Auth: m_IXtqJrgG7IPGbdoNCdhFperuI
Message-ID: <CA+55aFzrK29hbxoKs3GsvVUY4_uR7aBgZv2eeVyVq7MzfATY3w@mail.gmail.com>
Subject: Re: Firmware signing -- Re: [PATCH 00/27] security, efi: Add kernel lockdown
To: David Howells <dhowells@redhat.com>
Cc: Alan Cox <gnomes@lxorguk.ukuu.org.uk>,
        "Luis R. Rodriguez" <mcgrof@kernel.org>,
        "AKASHI, Takahiro" <takahiro.akashi@linaro.org>,
        Mimi Zohar <zohar@linux.vnet.ibm.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Jan Blunck <jblunck@infradead.org>,
        Julia Lawall <julia.lawall@lip6.fr>,
        Marcus Meissner <meissner@suse.de>, Gary Lin <GLin@suse.com>,
        LSM List <linux-security-module@vger.kernel.org>,
        linux-efi <linux-efi@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Matthew Garrett <mjg59@google.com>
Content-Type: text/plain; charset="UTF-8"
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Archived-At: <https://lore.kernel.org/lkml/CA+55aFzrK29hbxoKs3GsvVUY4_uR7aBgZv2eeVyVq7MzfATY3w@mail.gmail.com/>
List-Archive: <https://lore.kernel.org/lkml/>
List-Post: <mailto:linux-kernel@vger.kernel.org>

On Mon, Nov 13, 2017 at 1:44 PM, David Howells <dhowells@redhat.com> wrote:
>
> Whilst that may be true, we either have to check signatures on every bit of
> firmware that the appropriate driver doesn't say is meant to be signed or not
> bother.

I vote for "not bother".

Seriously, if you have firmware in /lib/firmware, and you don't trust
it, what the hell are you doing?

Oh, it's one of those "let's protect people from themselves, so that
they can't possibly break Disney^W^W be terrorists - but but the
children" things again, isn't it?

Watch me care.

                  Linus