linux-kernel - Re: [PATCH v4] random: fix crash on multiple early calls to add_bootloader

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Message-ID: <CAHmME9q6DnMk=p5kL0c1e4TxJOLpdxJpm3RbbgsNE8x1PWwi9g@mail.gmail.com>
Date:   Thu, 30 Dec 2021 19:05:23 +0100
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     "Ivan T. Ivanov" <iivanov@...e.de>
Cc:     Dominik Brodowski <linux@...inikbrodowski.net>,
        "Theodore Ts'o" <tytso@....edu>, Ard Biesheuvel <ardb@...nel.org>,
        linux-efi@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>
Subject: Re: [PATCH v4] random: fix crash on multiple early calls to add_bootloader_randomness()

Hey Ivan,

On Mon, Dec 6, 2021 at 9:14 AM Ivan T. Ivanov <iivanov@...e.de> wrote:
> Initial bug report could be found here [1]. Comments 14 and onward are
> probably helpful. To reproduce the issue I have downloaded "assets"
> from [2] and recreated test environment as found in autoinst-log.txt [3].
> Search for qemu-img and qemu-system-aarch64 in the log above. Login
> credentials for the images could be found by searching for "password"
> in the same file.
>
> Regards,
> Ivan
>
>
> [1] https://bugzilla.suse.com/show_bug.cgi?id=1184924
> [2] https://openqa.opensuse.org/tests/latest?arch=aarch64&distri=opensuse&flavor=DVD&machine=aarch64&test=extra_tests_in_textmode&version=15.3
> [3] https://openqa.opensuse.org/tests/2052459/logfile?filename=autoinst-log.txt

After a few rounds, Dominik and I converged on a set of patches that
are now in the crng/random.git tree. Do you think you could try this
tree out against your various test environments to confirm it fixes
the issue SUSE was seeing?

Tree is here: https://git.kernel.org/pub/scm/linux/kernel/git/crng/random.git

Thanks,
Jason