Re: [PATCH net] ieee802154: hwsim: free PIB after unregistering hardware

[Miquel Raynal]

Hello Yousef,

> @@ -1004,12 +1004,11 @@ static void hwsim_del(struct hwsim_phy *phy)
>  		list_del_rcu(&e->list);
>  		hwsim_free_edge(e);
>  	}
> -	pib = rcu_dereference(phy->pib);
>  	rcu_read_unlock();
>  
> -	kfree_rcu(pib, rcu);
> -
>  	ieee802154_unregister_hw(phy->hw);
> +	pib = rcu_dereference_protected(phy->pib, 1);
> +	kfree_rcu(pib, rcu);
>  	ieee802154_free_hw(phy->hw);
>  }

Would you mind justifying the choice for the _protected() version,
please?

Thanks,
Miquèl