linux-hardening - Re: [PATCH] pstore: migrate to crypto acomp interface (take 2)

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Date:   Mon, 17 Oct 2022 13:26:12 -0300
From:   "Guilherme G. Piccoli" <gpiccoli@...lia.com>
To:     Kees Cook <keescook@...omium.org>
Cc:     Ard Biesheuvel <ardb@...nel.org>,
        Anton Vorontsov <anton@...msg.org>,
        Colin Cross <ccross@...roid.com>,
        Tony Luck <tony.luck@...el.com>, linux-kernel@...r.kernel.org,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH] pstore: migrate to crypto acomp interface (take 2)

On 06/10/2022 20:41, Kees Cook wrote:
> From: Ard Biesheuvel <ardb@...nel.org>
> 
> The crypto 'compress' interface is deprecated, so before adding new
> features, migrate to the acomp interface. Note that we are only using
> synchronous implementations of acomp, so we don't have to deal with
> asynchronous completion.
> 
> [ Tweaked error paths to avoid memory leak, as pointed out byGuilherme
>   G. Piccoli <gpiccoli@...lia.com>, and fixed pstore_compress()
>   return value -kees ]
> 
> Signed-off-by: Ard Biesheuvel <ardb@...nel.org>
> Link: https://lore.kernel.org/lkml/CAMj1kXFnoqj+cn-0dT8fg0kgLvVx+Q2Ex-4CUjSnA9yRprmC-w@mail.gmail.com/
> Cc: "Guilherme G. Piccoli" <gpiccoli@...lia.com>
> Signed-off-by: Kees Cook <keescook@...omium.org>
> ---
>  fs/pstore/platform.c | 74 ++++++++++++++++++++++++++++++++++----------
>  1 file changed, 57 insertions(+), 17 deletions(-)
> 

Hi Kees, thanks for re-sending this one.

Just tested it on top of v6.0, with efi-pstore/ramoops, using zstd, lz4
and deflate - everything working as expected.
So, with the typo fixed, have my:

Tested-by: Guilherme G. Piccoli <gpiccoli@...lia.com>

Cheers,


Guilherme