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Date:   Mon, 16 Sep 2019 17:03:42 -0700
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To:     Linus Torvalds <torvalds@linux-foundation.org>
CC:     "Theodore Y. Ts'o" <tytso@mit.edu>, Willy Tarreau <w@1wt.eu>,
        Vito Caputo <vcaputo@pengaru.com>,
        "Ahmed S. Darwish" <darwish.07@gmail.com>,
        Lennart Poettering <mzxreary@0pointer.de>,
        Andreas Dilger <adilger.kernel@dilger.ca>,
        Jan Kara <jack@suse.cz>, Ray Strode <rstrode@redhat.com>,
        William Jon McCann <mccann@jhu.edu>,
        "Alexander E. Patrakov" <patrakov@gmail.com>,
        zhangjs <zachary@baishancloud.com>, linux-ext4@vger.kernel.org,
        lkml <linux-kernel@vger.kernel.org>
From:   Matthew Garrett <mjg59@srcf.ucam.org>
Message-ID: <ADFD1BDA-E512-42B8-8D03-E5894ACD7951@srcf.ucam.org>
Subject: Re: Linux 5.3-rc8
Sender: linux-ext4-owner@vger.kernel.org
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On 16 September 2019 16:18:00 GMT-07:00, Linus Torvalds <torvalds@linux-fou=
ndation=2Eorg> wrote:
>On Mon, Sep 16, 2019 at 4:11 PM Matthew Garrett <mjg59@srcf=2Eucam=2Eorg>
>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

We've been recommending that people use getrandom() for key generation sin=
ce it was first added to the kernel=2E Github suggests there are users in t=
he wild - there's almost certainly more cases where internal code depends o=
n the existing semantics=2E


--=20
Matthew Garrett | mjg59@srcf=2Eucam=2Eorg