ipv4: Give backtrace in ip_rt_bug().

Add a stack backtrace to the ip_rt_bug path for debugging

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index b24d58e6bbcd..52b0b956508b 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1665,6 +1665,7 @@ static int ip_rt_bug(struct sk_buff *skb)
                 &ip_hdr(skb)->saddr, &ip_hdr(skb)->daddr,
                 skb->dev ? skb->dev->name : "?");
         kfree_skb(skb);
+        WARN_ON(1);
         return 0;
 }