Commit 3de03596 authored by John Fastabend's avatar John Fastabend Committed by David S. Miller
Browse files

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: default avatarJohn Fastabend <>
Signed-off-by: default avatarDavid S. Miller <>
parent 366f2931
......@@ -2787,7 +2787,9 @@ static struct sk_buff *pktgen_alloc_skb(struct net_device *dev,
} else {
skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT);
skb_reserve(skb, LL_RESERVED_SPACE(dev));
if (likely(skb))
skb_reserve(skb, LL_RESERVED_SPACE(dev));
return skb;
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