[PATCH 11/20] ethernet: ucc_geth: fix use-after-free in ucc_geth_remove()

Jakub Kicinski kuba at kernel.org
Sun Dec 6 07:48:59 AEDT 2020


On Sat,  5 Dec 2020 20:17:34 +0100 Rasmus Villemoes wrote:
> -	unregister_netdev(dev);
> -	free_netdev(dev);
>  	ucc_geth_memclean(ugeth);
>  	if (of_phy_is_fixed_link(np))
>  		of_phy_deregister_fixed_link(np);
>  	of_node_put(ugeth->ug_info->tbi_node);
>  	of_node_put(ugeth->ug_info->phy_node);
> +	unregister_netdev(dev);
> +	free_netdev(dev);

Are you sure you want to move the unregister_netdev() as well as the
free?


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