On Wed, 2015-10-21 at 21:34 +0300, Emmanuel Grumbach wrote:
> +
> + if (skb->protocol == htons(ETH_P_IP)) {
> + ip_hdr(tmp)->id = ip_hdr(skb)->id;
Too late, you already called consume_skb(skb).
So this is a potential use after free.
> + be16_add_cpu(&ip_hdr(tmp)->id, i * num_subframes);
> + }
> +
I would use
base_id = ip_hdr(skb)->id; // before the consume_skb(skb)
ip_hdr(tmp)->id = htons(base_id + i * num_subframes);
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