From: Dan Carpenter <dan.carpenter@xxxxxxxxxx> This patch has been added to the 3.12 stable tree. If you have any objections, please let us know. =============== commit 78032f9b3eae3a43da9468d8ce30caa6be84f89d upstream. We recently added a new error path and it needs a dev_put(). Fixes: 7adac1ec8198 ('6lowpan: Only make 6lowpan links to IEEE802154 devices') Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Jiri Slaby <jslaby@xxxxxxx> --- net/ieee802154/6lowpan.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c index ceabe6f13216..70348be444c1 100644 --- a/net/ieee802154/6lowpan.c +++ b/net/ieee802154/6lowpan.c @@ -1392,8 +1392,10 @@ static int lowpan_newlink(struct net *src_net, struct net_device *dev, real_dev = dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); if (!real_dev) return -ENODEV; - if (real_dev->type != ARPHRD_IEEE802154) + if (real_dev->type != ARPHRD_IEEE802154) { + dev_put(real_dev); return -EINVAL; + } lowpan_dev_info(dev)->real_dev = real_dev; lowpan_dev_info(dev)->fragment_tag = 0; -- 2.12.0