This patch adds a check on data pointer. If this pointer is NULL we don't copy data from skb into data. This is useful if we only check if we can run skb_pull and doing it afterwards. Cc: Jukka Rissanen <jukka.rissanen@xxxxxxxxxxxxxxx> Signed-off-by: Alexander Aring <alex.aring@xxxxxxxxx> --- include/net/6lowpan.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/include/net/6lowpan.h b/include/net/6lowpan.h index dc03d77..c64d274 100644 --- a/include/net/6lowpan.h +++ b/include/net/6lowpan.h @@ -246,7 +246,9 @@ static inline bool lowpan_fetch_skb(struct sk_buff *skb, if (unlikely(!pskb_may_pull(skb, len))) return true; - skb_copy_from_linear_data(skb, data, len); + if (likely(data)) + skb_copy_from_linear_data(skb, data, len); + skb_pull(skb, len); return false; -- 2.2.0 -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
