Re: [Intel-wired-lan] [PATCH] ice: Fix a null pointer dereference in ice_copy_and_init_pkg()

[Michal Swiatkowski <michal.swiatkowski@linux.intel.com>]

On Sat, May 24, 2025 at 03:26:58PM +0800, Haoxiang Li wrote:
> Add check for the return value of devm_kmemdup()
> to prevent potential null pointer dereference.
> 
> Fixes: 2ffd87d38d6b ("ice: Move support DDP code out of ice_flex_pipe.c")

This commit is only moving the code to new file. I think it should be:
c76488109616 ("ice: Implement Dynamic Device Personalization (DDP) download")

> Cc: stable@vger.kernel.org
> Signed-off-by: Haoxiang Li <haoxiang_li2024@163.com>
> ---
>  drivers/net/ethernet/intel/ice/ice_ddp.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/net/ethernet/intel/ice/ice_ddp.c b/drivers/net/ethernet/intel/ice/ice_ddp.c
> index 59323c019544..351824dc3c62 100644
> --- a/drivers/net/ethernet/intel/ice/ice_ddp.c
> +++ b/drivers/net/ethernet/intel/ice/ice_ddp.c
> @@ -2301,6 +2301,8 @@ enum ice_ddp_state ice_copy_and_init_pkg(struct ice_hw *hw, const u8 *buf,
>  		return ICE_DDP_PKG_ERR;
>  
>  	buf_copy = devm_kmemdup(ice_hw_to_dev(hw), buf, len, GFP_KERNEL);
> +	if (!buf_copy)
> +		return ICE_DDP_PKG_ERR;

Fix looks fine, thanks
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>

>  
>  	state = ice_init_pkg(hw, buf_copy, len);
>  	if (!ice_is_init_pkg_successful(state)) {
> -- 
> 2.25.1