[APPLETALK]: Fix potential OOPS in atalk_sendmsg().

atrtr_find() can return NULL, so do not blindly dereference
rt->dev before we check for rt being NULL.

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

1 files changed, 0 insertions, 2 deletions

diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 708e2e0371af..485e35c3b28b 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1584,7 +1584,6 @@ static int atalk_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr
 
         if (usat->sat_addr.s_net || usat->sat_addr.s_node == ATADDR_ANYNODE) {
                 rt = atrtr_find(&usat->sat_addr);
-                dev = rt->dev;
         } else {
                 struct atalk_addr at_hint;
 
@@ -1592,7 +1591,6 @@ static int atalk_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr
                 at_hint.s_net  = at->src_net;
 
                 rt = atrtr_find(&at_hint);
-                dev = rt->dev;
         }
         if (!rt)
                 return -ENETUNREACH;