Subject: Re: [PATCH net] net: cpsw: Properly initialise struct page_pool_params

From: Colin Foster <[email-masked]>
Date: Mon, 24 Jan 2022 21:15:22 -0800

On Mon, Jan 24, 2022 at 03:35:29PM +0100, Toke Høiland-Jørgensen wrote:
> The cpsw driver didn't properly initialise the struct page_pool_params
> before calling page_pool_create(), which leads to crashes after the struct
> has been expanded with new parameters.
> 
> The second Fixes tag below is where the buggy code was introduced, but
> because the code was moved around this patch will only apply on top of the
> commit in the first Fixes tag.
> 
> Fixes: c5013ac1dd0e ("net: ethernet: ti: cpsw: move set of common functions in cpsw_priv")
> Fixes: 9ed4050c0d75 ("net: ethernet: ti: cpsw: add XDP support")
> Reported-by: Colin Foster <[email-masked]>
> Signed-off-by: Toke Høiland-Jørgensen <[email-masked]>
> ---
>  drivers/net/ethernet/ti/cpsw_priv.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/ti/cpsw_priv.c b/drivers/net/ethernet/ti/cpsw_priv.c
> index ba220593e6db..8f6817f346ba 100644
> --- a/drivers/net/ethernet/ti/cpsw_priv.c
> +++ b/drivers/net/ethernet/ti/cpsw_priv.c
> @@ -1146,7 +1146,7 @@ int cpsw_fill_rx_channels(struct cpsw_priv *priv)
>  static struct page_pool *cpsw_create_page_pool(struct cpsw_common *cpsw,
>  					       int size)
>  {
> -	struct page_pool_params pp_params;
> +	struct page_pool_params pp_params = {};
>  	struct page_pool *pool;
>  
>  	pp_params.order = 0;
> -- 
> 2.34.1
> 

Works for me. Thanks Toke! Hopefully my tested by tag addition is done
correctly:

Tested-by: Colin Foster <[email-masked]>