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Date:   Thu, 13 Aug 2020 09:53:11 +0200
From:   Sedat Dilek <>
To:     Willy Tarreau <>
Cc:     George Spelvin <>, Amit Klein <>,
        Eric Dumazet <>,
        "Jason A. Donenfeld" <>,
        Andy Lutomirski <>,
        Kees Cook <>,
        Thomas Gleixner <>,
        Peter Zijlstra <>,
        Linus Torvalds <>,
Subject: Re: [DRAFT PATCH] random32: make prandom_u32() output unpredictable

On Wed, Aug 12, 2020 at 5:21 AM Willy Tarreau <> wrote:
> On Tue, Aug 11, 2020 at 12:51:43PM +0200, Sedat Dilek wrote:
> > Can you share this "rebased to mainline" version of George's patch?
> You can pick it from there if that helps, but keep in mind that
> it's just experimental code that we use to explain our ideas and
> that we really don't care a single second what kernel it's applied
> to:

Thanks Willy.

I disagree: the base for testing should be clear(ly communicated).

There are two diffs from Eric to #1: add a trace event for
prandom_u32() and #2: a removal of prandom_u32() call in
In case you have not seen.
The first was helpful for playing with linux-perf.
I have tested both together with [2].

- Sedat -


Note2myself: Enable some useful random/random32 Kconfigs


- EOT -

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