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net: fix potential null pointer dereference 

Add null check to avoid a potential null pointer dereference.

Addresses-Coverity-ID: 1408831
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gustavo A. R. Silva 2017-05-23 18:18:37 -05:00 committed by David S. Miller
parent 11387fe4a9
commit 65d786c21b
1 changed files with 1 additions and 1 deletions
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2
drivers/net/gtp.c
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@ -873,7 +873,7 @@ static struct gtp_dev *gtp_find_dev(struct net *src_net, struct nlattr *nla[])
/* Check if there's an existing gtpX device to configure */
dev = dev_get_by_index_rcu(net, nla_get_u32(nla[GTPA_LINK]));
if (dev->netdev_ops == &gtp_netdev_ops)
if (dev && dev->netdev_ops == &gtp_netdev_ops)
gtp = netdev_priv(dev);
put_net(net);