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ieee802154: Fix oops during ieee802154_sock_ioctl
Trying to run izlisten (from lowpan-tools tests) on a device that does not exists I got the oops below. The problem is that we are using get_dev_by_name without checking if we really get a device back. We don't in this case and writing to dev->type generates this oops. [Oops code removed by Dmitry Eremin-Solenikov] If possible this patch should be applied to the current -rc fixes branch. Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org> Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -151,6 +151,9 @@ static int ieee802154_dev_ioctl(struct sock *sk, struct ifreq __user *arg,
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dev_load(sock_net(sk), ifr.ifr_name);
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dev = dev_get_by_name(sock_net(sk), ifr.ifr_name);
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if (!dev)
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return -ENODEV;
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if (dev->type == ARPHRD_IEEE802154 && dev->netdev_ops->ndo_do_ioctl)
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ret = dev->netdev_ops->ndo_do_ioctl(dev, &ifr, cmd);
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