Re: [PATCH 2/2] media: venus: hfi_cmds: struct hfi_session_release_buffer_pkt: Add __counted_by annotation

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On 7/11/2024 4:39 AM, Kees Cook wrote:
> The only direct user of struct hfi_session_release_buffer_pkt is
> pkt_session_unset_buffers() which sets "num_buffers" before using it
> as a loop counter for accessing "buffer_info". Add the __counted_by
> annotation to reflect the relationship.
> 
> Signed-off-by: Kees Cook <kees@xxxxxxxxxx>
> ---
> Cc: Stanimir Varbanov <stanimir.k.varbanov@xxxxxxxxx>
> Cc: Vikash Garodia <quic_vgarodia@xxxxxxxxxxx>
> Cc: "Bryan O'Donoghue" <bryan.odonoghue@xxxxxxxxxx>
> Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
> Cc: "Gustavo A. R. Silva" <gustavoars@xxxxxxxxxx>
> Cc: linux-media@xxxxxxxxxxxxxxx
> Cc: linux-arm-msm@xxxxxxxxxxxxxxx
> Cc: linux-hardening@xxxxxxxxxxxxxxx
> ---
>  drivers/media/platform/qcom/venus/hfi_cmds.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/qcom/venus/hfi_cmds.h b/drivers/media/platform/qcom/venus/hfi_cmds.h
> index 42825f07939d..1adf2d2ae5f2 100644
> --- a/drivers/media/platform/qcom/venus/hfi_cmds.h
> +++ b/drivers/media/platform/qcom/venus/hfi_cmds.h
> @@ -227,7 +227,7 @@ struct hfi_session_release_buffer_pkt {
>  	u32 extradata_size;
>  	u32 response_req;
>  	u32 num_buffers;
> -	u32 buffer_info[];
> +	u32 buffer_info[] __counted_by(num_buffers);
>  };
>  
>  struct hfi_session_release_resources_pkt {

Reviewed-by: Vikash Garodia <quic_vgarodia@xxxxxxxxxxx>

Regards,
Vikash




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