[PATCH] drivers: video: efi-gop: fix null reference pointer on priv->fb.mode=NULL.
Ahmad Fatoum
a.fatoum at pengutronix.de
Mon Sep 1 03:36:48 PDT 2025
Hi,
On 8/28/25 6:14 AM, chalianis1 at gmail.com wrote:
> From: Chali Anis <chalianis1 at gmail.com>
>
> fix a null reference pointer on mode variable, that was never initialized,
> the mode will be set by the framebuffer subsyetem after initialisation so
> it's not necessary to change the resolution here.
>
> Fixes: 6518b21c6c66 ("video: add EFI Graphics Output Protocol support")
>
> Signed-off-by: Chali Anis <chalianis1 at gmail.com>
Uhh, so this has always been a null pointer dereference so far, but NULL
page read didn't trap for us on x86..?
Anyways:
Reviewed-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
Thanks,
Ahmad
> ---
> drivers/video/efi_gop.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/video/efi_gop.c b/drivers/video/efi_gop.c
> index f4f58d9271f5..cef8a6816cac 100644
> --- a/drivers/video/efi_gop.c
> +++ b/drivers/video/efi_gop.c
> @@ -169,8 +169,6 @@ static int efi_gop_query(struct efi_gop_priv *priv)
>
> priv->fb.screen_base = mode->frame_buffer_base;
> priv->mode = mode->mode;
> - priv->fb.xres = priv->fb.mode->xres;
> - priv->fb.yres = priv->fb.mode->yres;
>
> return 0;
> }
--
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