Commit e2f9dc3b authored Nov 19, 2015 by Eric Dumazet Committed by David S. Miller Nov 20, 2015

net: avoid NULL deref in napi_get_frags()



napi_alloc_skb() can return NULL.
We should not crash should this happen.

Fixes: 93f93a44 ("net: move skb_mark_napi_id() into core networking stack")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent b3d39a88

net/core/dev.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -4390,9 +4390,11 @@ struct sk_buff napi_get_frags(struct napi_struct napi)

		if (!skb) {
		skb = napi_alloc_skb(napi, GRO_MAX_HEAD);
		if (skb) {
		napi->skb = skb;
		skb_mark_napi_id(skb, napi);
		}
		}
		return skb;
		}
		EXPORT_SYMBOL(napi_get_frags);