Re: [PATCH 1/3] ARM: compressed: Pass the actual output length to the decompressor

From: Linus Walleij
Date: Wed Apr 12 2023 - 17:42:41 EST


On Wed, Apr 12, 2023 at 11:21 PM Jonathan Neuschäfer
<j.neuschaefer@xxxxxxx> wrote:

> ZSTD writes outside of the space that is necessary for the uncompressed
> data, when it is told it has unlimited output length. To fix this, pass
> the actual output length (the length of the uncompressed kernel) to the
> decompressor.
>
> The uncompressed length is already stored as a little endian 32-bit
> constant before the input_data_end symbol.
>
> Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@xxxxxxx>

Really neat fix!
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Yours,
Linus Walleij