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

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Date:   Tue, 4 Jan 2022 17:06:14 +0200
From:   "Ivan T. Ivanov" <iivanov@...e.de>
To:     "Jason A. Donenfeld" <Jason@...c4.com>
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()

On 12-30 19:05, Jason A. Donenfeld wrote:
> 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()
> Message-ID: <CAHmME9q6DnMk=p5kL0c1e4TxJOLpdxJpm3RbbgsNE8x1PWwi9g@...l.gmail.com>
> 

Hi,

> 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
> 

Sure, once I have result will post back.

Thanks!
Ivan