Re: [BUG] skb corruption and kernel panic at forwarding with fragmentation

[Eric Dumazet]

On Thu, Jan 7, 2016 at 6:38 AM, Konstantin Khlebnikov <koct9i@xxxxxxxxx> wrote:
>
> Also I've found strange thing: reason of expanding skb->cb from 40 to
> 48 bypes in 2006
> 3e3850e989c5d2eb1aab6f0fd9257759f0f4cbc6 was that struct inet6_skb_parm does
> not fit. But it's is only 24 bytes. Does some arches add pad after
> each _u16 field?

"struct inet6_skb_parm" is part of struct tcp_skb_cb

This is why Patrick had to increase skb->cb[]
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