Re: [PATCH] MIPS: boot: Fix unaligned access with CONFIG_MIPS_RAW_APPENDED_DTB

[Philippe Mathieu-Daudé]

On Thu, Dec 17, 2020 at 12:41 AM Paul Cercueil <paul@xxxxxxxxxxxxxxx> wrote:
>
> The compressed payload is not necesarily 4-byte aligned, at least when
> compiling with Clang. In that case, the 4-byte value appended to the
> compressed payload that corresponds to the uncompressed kernel image
> size must be read using get_unaligned_le().
>
> This fixes Clang-built kernels not booting on MIPS (tested on a Ingenic
> JZ4770 board).
>
> Fixes: b8f54f2cde78 ("MIPS: ZBOOT: copy appended dtb to the end of the kernel")
> Cc: <stable@xxxxxxxxxxxxxxx> # v4.7
> Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
> ---
>  arch/mips/boot/compressed/decompress.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Philippe Mathieu-Daudé <f4bug@xxxxxxxxx>