linux-kernel - Re: [PATCH RFC v0] random: block in /dev/urandom

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: <CAHmME9ooEbgiv3DRk87ei+rUoVNMJthY7UuG_xCgm=kfMZAajw@mail.gmail.com>
Date:   Mon, 14 Feb 2022 15:05:03 +0100
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     Joshua Kinard <kumba@...too.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        "open list:BROADCOM NVRAM DRIVER" <linux-mips@...r.kernel.org>,
        Dominik Brodowski <linux@...inikbrodowski.net>,
        Eric Biggers <ebiggers@...gle.com>,
        Ard Biesheuvel <ardb@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andy Lutomirski <luto@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Lennart Poettering <mzxreary@...inter.de>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Theodore Ts'o" <tytso@....edu>
Subject: Re: [PATCH RFC v0] random: block in /dev/urandom

Hi Joshua,

Thanks a lot for the historical background.

On Sun, Feb 13, 2022 at 12:06 AM Joshua Kinard <kumba@...too.org> wrote:
> The R6000/R6000A CPU only ever existed in systems in the late 1980's that
> were fairly large, and I don't think there is a complete, working unit out
> there that can actually boot up, let alone boot a Linux kernel.

So from what you've written, it sounds like MIPS is actually not a problem here.

So the only systems we're actually talking about without a good cycle
counter are non-Amiga m68k? If so, that'd be a pretty terrific
finding. It'd mean that this idea can move forward, and we only need
to worry about some m68k museum pieces with misconfigured
userspaces...

Jason