[FFmpeg-devel] [PATCH] swscale/x86/yuv2rgb: fix crashes when loading alpha from unaligned buffers

[Marton Balint]

On Wed, 28 Oct 2020, Marton Balint wrote:

> Regression since fc6a5883d6af8cae0e96af84dda0ad74b360a084 on SSSE3 enabled
> CPUs.
>
> Fixes ticket #8955.
>
> Signed-off-by: Marton Balint <cus at passwd.hu>
> ---
> libswscale/x86/yuv_2_rgb.asm | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libswscale/x86/yuv_2_rgb.asm b/libswscale/x86/yuv_2_rgb.asm
> index 003dff1f25..2f0b4130df 100644
> --- a/libswscale/x86/yuv_2_rgb.asm
> +++ b/libswscale/x86/yuv_2_rgb.asm
> @@ -286,7 +286,7 @@ cglobal %1_420_%2%3, GPR_num, GPR_num, reg_num, parameters
> %ifidn %1, yuv
>     pcmpeqd m3, m3 ; Set alpha empty
> %else
> -    mova m3, [pa_2indexq + 2 * indexq] ; Load alpha
> +    movu m3, [pa_2indexq + 2 * indexq] ; Load alpha
> %endif
>     mova m5, m_blue
>     mova m6, m_red

Will apply...

Regards,
Marton