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From: "Gustavo A. R. Silva" <garsilva@embeddedor.com>
To: Pablo Neira Ayuso <pablo@netfilter.org>,
	Harald Welte <laforge@gnumonks.org>
Cc: osmocom-net-gprs@lists.osmocom.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	"Gustavo A. R. Silva" <garsilva@embeddedor.com>
Subject: [PATCH] net: fix potential null pointer dereference
Date: Tue, 23 May 2017 18:18:37 -0500	[thread overview]
Message-ID: <20170523231837.GA9364@embeddedgus> (raw)

Add null check to avoid a potential null pointer dereference.

Addresses-Coverity-ID: 1408831
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
---
 drivers/net/gtp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
index 4fea1b3..7b652bb 100644
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c
@@ -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);
-- 
2.5.0

             reply	other threads:[~2017-05-23 23:18 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-23 23:18 Gustavo A. R. Silva [this message]
2017-05-24  9:29 ` [PATCH] net: fix potential null pointer dereference Pablo Neira Ayuso
2017-05-25 16:54 ` David Miller

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