linux-kernel - Re: [PATCH v3 1/2] kcsan: Rewrite kcsan_prandom_u32_max() without prandom_u32

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CANpmjNNKgKAxHVdxC9LWpwrxRREU7JdMTeDiCU7hzMG=Oh9QcA@mail.gmail.com>
Date:   Tue, 1 Dec 2020 09:41:01 +0100
From:   Marco Elver <elver@...gle.com>
To:     "Paul E. McKenney" <paulmck@...nel.org>
Cc:     Will Deacon <will@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Boqun Feng <boqun.feng@...il.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        kasan-dev <kasan-dev@...glegroups.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 1/2] kcsan: Rewrite kcsan_prandom_u32_max() without prandom_u32_state()

Hi Paul,

On Tue, 24 Nov 2020 at 12:02, Marco Elver <elver@...gle.com> wrote:
> Rewrite kcsan_prandom_u32_max() to not depend on code that might be
> instrumented, removing any dependency on lib/random32.c. The rewrite
> implements a simple linear congruential generator, that is sufficient
> for our purposes (for udelay() and skip_watch counter randomness).
>
[...]

It's been about 7 days -- feel free to pick up this series (unless
there are new comments).

Thanks,
-- Marco