[PATCH net-next] ipvs: Avoid null-pointer deref in debug code

[Alex Gartrell <agartrell@xxxxxx>]

Ensure that the pointer is non-NULL before dereferencing it for debugging
purposes.

Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Alex Gartrell <agartrell@xxxxxx>
---
 net/netfilter/ipvs/ip_vs_xmit.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index 91f17c1..06bba9b 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -316,7 +316,7 @@ __ip_vs_get_out_rt(int skb_af, struct sk_buff *skb, struct 
ip_vs_dest *dest,
        if (unlikely(crosses_local_route_boundary(skb_af, skb, rt_mode,
                                                  local))) {
                IP_VS_DBG_RL("We are crossing local and non-local addresses"
-                            " daddr=%pI4\n", &dest->addr.ip);
+                            " daddr=%pI4\n", dest ? &dest->addr.ip : NULL);
                goto err_put;
        }
 
@@ -458,7 +458,7 @@ __ip_vs_get_out_rt_v6(int skb_af, struct sk_buff *skb, 
struct ip_vs_dest *dest,
        if (unlikely(crosses_local_route_boundary(skb_af, skb, rt_mode,
                                                  local))) {
                IP_VS_DBG_RL("We are crossing local and non-local addresses"
-                            " daddr=%pI6\n", &dest->addr.in6);
+                            " daddr=%pI6\n", dest ? &dest->addr.in6 : NULL);
                goto err_put;
        }
 
-- 
Alex Gartrell <agartrell@xxxxxx>

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