From: Eric Dumazet <eric.duma...@gmail.com>
Date: Tue, 10 Jan 2017 12:24:01 -0800
> From: Herbert Xu <herb...@gondor.apana.org.au>
>
> The GRO path has a fast-path where we avoid calling pskb_may_pull
> and pskb_expand by directly accessing frag0. However, this should
> only be done if we have enough tailroom in the skb as otherwise
> we'll have to expand it later anyway.
>
> This patch adds the check by capping frag0_len with the skb tailroom.
>
> Fixes: cb18978cbf45 ("gro: Open-code final pskb_may_pull")
> Reported-by: Slava Shwartsman <slav...@mellanox.com>
> Signed-off-by: Herbert Xu <herb...@gondor.apana.org.au>
> Signed-off-by: Eric Dumazet <eduma...@google.com>
Applied and queued up for -stable.
