cfg80211: fix netns error unwinding bug

The error unwinding code in set_netns has a bug
that will make it run into a BUG_ON if passed a
bad wiphy index, fix by not trying to unlock a
wiphy that doesn't exist.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index eddab097435c..ca3c92a0a14f 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -4029,7 +4029,7 @@ static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
         rdev = cfg80211_get_dev_from_info(info);
         if (IS_ERR(rdev)) {
                 err = PTR_ERR(rdev);
-                goto out;
+                goto out_rtnl;
         }
 
         net = get_net_ns_by_pid(pid);
@@ -4049,6 +4049,7 @@ static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
         put_net(net);
  out:
         cfg80211_unlock_rdev(rdev);
+ out_rtnl:
         rtnl_unlock();
         return err;
 }