commit 932c1329acebc03ef5efa3647c9c3a967b59d0c4
author Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Fri Jun 19 17:00:08 2009 +0400
committer Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Mon Jun 29 18:20:27 2009 +0400
tree c0e281f5074ea0e655543eba8a766d0fe500c8bd
parent e0af6062aa4f89081afb8a1a4269605775d354de

nl802154: fix Oops in ieee802154_nl_get_dev

ieee802154_nl_get_dev() lacks check for the existance of the device
that was returned by dev_get_XXX, thus resulting in Oops for non-existing
devices. Fix it.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>

net/ieee802154/netlink.c

diff --git a/net/ieee802154/netlink.c b/net/ieee802154/netlink.c
index 105ad10..332b947 100644
--- a/net/ieee802154/netlink.c
+++ b/net/ieee802154/netlink.c
@@ -276,6 +276,9 @@
 	else
 		return NULL;
 
+	if (!dev)
+		return NULL;
+
 	if (dev->type != ARPHRD_IEEE802154) {
 		dev_put(dev);
 		return NULL;