netdev - Re: [PATCH net] sch_netem: fix skb leak in netem

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Date:   Mon, 05 Mar 2018 07:13:38 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Alexey Kodanev <alexey.kodanev@...cle.com>,
        Neil Horman <nhorman@...driver.com>
Cc:     netdev@...r.kernel.org, David Miller <davem@...emloft.net>
Subject: Re: [PATCH net] sch_netem: fix skb leak in netem_enqueue()

On Mon, 2018-03-05 at 15:57 +0300, Alexey Kodanev wrote:
> 
> +static inline void __qdisc_drop_all(struct sk_buff *skb,
> +                                   struct sk_buff **to_free)
> +{
> +       struct sk_buff *first = skb;
> +
> +       while (skb->next)
> +               skb = skb->next;
> +
> +       skb->next = *to_free;
> +       *to_free = first;
> +}

You probably can leverage what I did for commit bec3cfdca36bf43cfa
("net: skb_segment() provides list head and tail")
to avoid the iteration.