ipv6: check return value for dst_alloc

return value of dst_alloc must be checked before use

Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 1250f90..fb545ed 100644 (file)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -244,7 +244,9 @@ static inline struct rt6_info *ip6_dst_alloc(struct dst_ops *ops,
 {
        struct rt6_info *rt = dst_alloc(ops, dev, 0, 0, flags);
 
-       memset(&rt->rt6i_table, 0, sizeof(*rt) - sizeof(struct dst_entry));
+       if (rt != NULL)
+               memset(&rt->rt6i_table, 0,
+                       sizeof(*rt) - sizeof(struct dst_entry));
 
        return rt;
 }