diff options
| -rw-r--r-- | net/decnet/dn_dev.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c index b5ef237c8a74..5790d660bc7d 100644 --- a/net/decnet/dn_dev.c +++ b/net/decnet/dn_dev.c @@ -828,13 +828,17 @@ static int dn_dev_get_first(struct net_device *dev, __le16 *addr) struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr; struct dn_ifaddr *ifa; int rv = -ENODEV; + if (dn_db == NULL) goto out; + + rtnl_lock(); ifa = dn_db->ifa_list; if (ifa != NULL) { *addr = ifa->ifa_local; rv = 0; } + rtnl_unlock(); out: return rv; } |