ieee802154: Fix oops during ieee802154_sock_ioctl

[safe/jmp/linux-2.6] / net / ieee802154 / af_ieee802154.c

diff --git a/net/ieee802154/af_ieee802154.c b/net/ieee802154/af_ieee802154.c
index c7da600..93c91b6 100644 (file)
--- a/net/ieee802154/af_ieee802154.c
+++ b/net/ieee802154/af_ieee802154.c
@@ -151,6 +151,9 @@ static int ieee802154_dev_ioctl(struct sock *sk, struct ifreq __user *arg,
        dev_load(sock_net(sk), ifr.ifr_name);
        dev = dev_get_by_name(sock_net(sk), ifr.ifr_name);
 
+       if (!dev)
+               return -ENODEV;
+
        if (dev->type == ARPHRD_IEEE802154 && dev->netdev_ops->ndo_do_ioctl)
                ret = dev->netdev_ops->ndo_do_ioctl(dev, &ifr, cmd);