[IPSEC]: Set dst->input to dst_discard

The input function should never be invoked on IPsec dst objects.  This
is because we don't apply IPsec on input until after we've made the
routing decision.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
index 7d250a1bd2c..c40a71b74db 100644
--- a/net/ipv4/xfrm4_policy.c
+++ b/net/ipv4/xfrm4_policy.c
@@ -10,6 +10,7 @@
 
 #include <linux/compiler.h>
 #include <linux/inetdevice.h>
+#include <net/dst.h>
 #include <net/xfrm.h>
 #include <net/ip.h>
 
@@ -167,7 +168,7 @@ __xfrm4_bundle_create(struct xfrm_policy *policy, struct xfrm_state **xfrm, int
                 dst_prev->trailer_len   = trailer_len;
                 memcpy(&dst_prev->metrics, &x->route->metrics, sizeof(dst_prev->metrics));
 
-                dst_prev->input         = rt->u.dst.input;
+                dst_prev->input = dst_discard;
                 dst_prev->output = dst_prev->xfrm->outer_mode->afinfo->output;
                 if (rt0->peer)
                         atomic_inc(&rt0->peer->refcnt);