Commit 3de03596 authored Jan 10, 2016 by John Fastabend Committed by David S. Miller Jan 11, 2016

net: pktgen: fix null ptr deref in skb allocation



Fix possible null pointer dereference that may occur when calling
skb_reserve() on a null skb.

Fixes: 879c7220 ("net: pktgen: Observe needed_headroom of the device")
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 366f2931

net/core/pktgen.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -2787,6 +2787,8 @@ static struct sk_buff pktgen_alloc_skb(struct net_device dev,
		} else {
		skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT);
		}

		if (likely(skb))
		skb_reserve(skb, LL_RESERVED_SPACE(dev));

		return skb;