net: pktgen: fix null ptr deref in skb allocation
authorJohn Fastabend <john.fastabend@gmail.com>
Mon, 11 Jan 2016 05:38:44 +0000 (21:38 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 31 Jan 2016 19:29:00 +0000 (11:29 -0800)
commit4d90b0d1c15cf9daa3089faf163df75a68bba5b7
tree6f612aacb047989e79a73e7a6c5de8f498136f7f
parent8ece807074d09df2dc2a2ba12783cc5a36cb6cf2
net: pktgen: fix null ptr deref in skb allocation

[ Upstream commit 3de03596dfeee48bc803c1d1a6daf60a459929f3 ]

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

Fixes: 879c7220e82 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/core/pktgen.c