inet: Fix BUG triggered by __rt{,6}_get_peer().

If no peer actually gets attached (either because create is zero or
the peer allocation fails) we'll trigger a BUG because we
unconditionally do an rt{,6}_peer_ptr() afterwards.

Fix this by guarding it with the proper check.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index f88a85cf31c..a2cda240ca9 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -61,7 +61,7 @@ static inline struct inet_peer *__rt6_get_peer(struct rt6_info *rt, int create)
                 return rt6_peer_ptr(rt);
 
         rt6_bind_peer(rt, create);
-        return rt6_peer_ptr(rt);
+        return (rt6_has_peer(rt) ? rt6_peer_ptr(rt) : NULL);
 }
 
 static inline struct inet_peer *rt6_get_peer(struct rt6_info *rt)