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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Kees Cook <keescook@chromium.org>
Cc: tcharding <me@tobin.cc>, "Theodore Ts'o" <tytso@mit.edu>,
	Steven Rostedt <rostedt@goodmis.org>,
	Anna-Maria Gleixner <anna-maria@linutronix.de>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	"Jason A. Donenfeld" <Jason@zx2c4.com>
Subject: Re: Hashed pointer issues
Date: Mon, 30 Apr 2018 20:01:13 +0000
Message-ID: <CA+55aFxfc8C9Hx+eQZrnyYuwoOitFvMpmWkWMTeA4mNCgLaSiQ@mail.gmail.com> (raw)
In-Reply-To: <CAGXu5jKbagUs7cS5y6zRQkgiA0tnD7K0FajwA1Gt+ZCPrc2jfQ@mail.gmail.com>

On Mon, Apr 30, 2018 at 12:16 PM Kees Cook <keescook@chromium.org> wrote:

> I just noticed: there are _no_ users of get_random_bytes_arch() ...
> didn't we once use it to feed entropy to the CRNG?

We use arch_get_random_long() for that. See "crng_initialize()".

But if there are no actual users of get_random_bytes_arch(), maybe we can
just remove the fallback to the non-arch code, and add that return value
(and the __must_check()).

                    Linus

  reply index

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-30 15:50 Anna-Maria Gleixner
2018-04-30 16:11 ` Kees Cook
2018-04-30 16:31   ` Linus Torvalds
2018-04-30 16:41     ` Steven Rostedt
2018-04-30 16:57       ` Linus Torvalds
2018-04-30 17:01         ` Linus Torvalds
2018-04-30 17:06           ` Randy Dunlap
2018-04-30 17:12             ` Linus Torvalds
2018-05-01  7:05               ` tcharding
2018-05-03  8:41             ` Geert Uytterhoeven
2018-04-30 18:38           ` Kees Cook
2018-04-30 19:00             ` Linus Torvalds
2018-04-30 19:16               ` Kees Cook
2018-04-30 20:01                 ` Linus Torvalds [this message]
2018-04-30 20:07                   ` Linus Torvalds
2018-04-30 21:23                 ` Tobin C. Harding

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