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Date: Tue, 31 May 2016 00:39:55 +0200
From: Emese Revfy <re.emese@...il.com>
To: Kees Cook <keescook@...omium.org>
Cc: PaX Team <pageexec@...email.hu>, "kernel-hardening@...ts.openwall.com"
<kernel-hardening@...ts.openwall.com>, Brad Spengler
<spender@...ecurity.net>, Michal Marek <mmarek@...e.com>, LKML
<linux-kernel@...r.kernel.org>, Masahiro Yamada
<yamada.masahiro@...ionext.com>, linux-kbuild
<linux-kbuild@...r.kernel.org>, "Theodore Ts'o" <tytso@....edu>, Andrew
Morton <akpm@...ux-foundation.org>, Linux-MM <linux-mm@...ck.org>, Jens
Axboe <axboe@...nel.dk>, Al Viro <viro@...iv.linux.org.uk>, Paul McKenney
<paulmck@...ux.vnet.ibm.com>, Ingo Molnar <mingo@...hat.com>, Thomas
Gleixner <tglx@...utronix.de>, bart.vanassche@...disk.com,
"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH v1 1/3] Add the latent_entropy gcc plugin
On Tue, 24 May 2016 19:55:17 -0700
Kees Cook <keescook@...omium.org> wrote:
> Yeah, answering "how random is this?" is not easy, but that's not what
> I meant. I'm more curious about specific build configs or hardware
> where calling get_random_int() early enough would always produce the
> same value (or the same value across all threads, etc), and in these
> cases, the new entropy should be visible when using the latent entropy
> plugin.
I booted minimal configs (not allnoconfig because it can't boot in qemu)
many times. I couldn't produce same values.
--
Emese
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