linux-hardening - Re: [PATCH 4/5] pstore/ram: Set freed addresses to NULL

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Message-ID: <fb46724b-f696-c672-fed0-53d844c79151@igalia.com>
Date:   Wed, 12 Oct 2022 16:44:12 -0300
From:   "Guilherme G. Piccoli" <gpiccoli@...lia.com>
To:     Kees Cook <keescook@...omium.org>, linux-hardening@...r.kernel.org
Cc:     Anton Vorontsov <anton@...msg.org>,
        Colin Cross <ccross@...roid.com>,
        Tony Luck <tony.luck@...el.com>,
        Paramjit Oberoi <pso@...omium.org>,
        Ard Biesheuvel <ardb@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/5] pstore/ram: Set freed addresses to NULL

On 11/10/2022 17:01, Kees Cook wrote:
> For good measure, set all the freed addresses to NULL when managing
> przs.
> 
> Cc: Anton Vorontsov <anton@...msg.org>
> Cc: Colin Cross <ccross@...roid.com>
> Cc: Tony Luck <tony.luck@...el.com>
> Signed-off-by: Kees Cook <keescook@...omium.org>
> ---

Reviewed-and-tested-by: Guilherme G. Piccoli <gpiccoli@...lia.com>

Tested by building / booting and triggering crashes with efi and ramoops
backends.
Cheers,


Guilherme