linux-kernel - Re: [kernel-hardening] [PATCH v4 05/13] crypto/rng: ensure that the RNG is ready before using

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Message-ID: <CAHmME9rO7+WtWWLxGpzusqzZ352BB9vw0C12SB1rF6xxbuM7ig@mail.gmail.com>
Date:   Thu, 8 Jun 2017 02:47:36 +0200
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     "Theodore Ts'o" <tytso@....edu>,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-hardening@...ts.openwall.com,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        David Miller <davem@...emloft.net>,
        Eric Biggers <ebiggers3@...il.com>,
        Herbert Xu <herbert@...dor.apana.org.au>
Subject: Re: [kernel-hardening] [PATCH v4 05/13] crypto/rng: ensure that the
 RNG is ready before using

On Thu, Jun 8, 2017 at 2:41 AM, Theodore Ts'o <tytso@....edu> wrote:
> The use in keys/big_key is _being_ removed, so this commit is
> dependent on that commit landing, correct?  (Order matters, because
> otherwise we don't want to potentially screw up doing a kernel bisect
> and causing their kernel to deadlock during the boot while they are
> trying to track down an unreleated problem.)

Yes. It's actually landing with get_random_bytes, to avoid a
dependency problem when merging. After these both lands, I'll submit a
third changing that over to get_random_bytes_wait in the right place.