1 files changed, 14 insertions, 8 deletions

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 54fd68c14c87..cb562fdd9b9a 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -90,6 +90,7 @@
 #include <linux/jhash.h>
 #include <linux/rcupdate.h>
 #include <linux/times.h>
+#include <linux/slab.h>
 #include <net/dst.h>
 #include <net/net_namespace.h>
 #include <net/protocol.h>
@@ -1097,7 +1098,7 @@ static int slow_chain_length(const struct rtable *head)
 }
 
 static int rt_intern_hash(unsigned hash, struct rtable *rt,
-                          struct rtable **rp, struct sk_buff *skb)
+                          struct rtable **rp, struct sk_buff *skb, int ifindex)
 {
         struct rtable   *rth, **rthp;
         unsigned long   now;
@@ -1212,11 +1213,16 @@ restart:
                     slow_chain_length(rt_hash_table[hash].chain) > rt_chain_length_max) {
                         struct net *net = dev_net(rt->u.dst.dev);
                         int num = ++net->ipv4.current_rt_cache_rebuild_count;
-                        if (!rt_caching(dev_net(rt->u.dst.dev))) {
+                        if (!rt_caching(net)) {
                                 printk(KERN_WARNING "%s: %d rebuilds is over limit, route caching disabled\n",
                                         rt->u.dst.dev->name, num);
                         }
-                        rt_emergency_hash_rebuild(dev_net(rt->u.dst.dev));
+                        rt_emergency_hash_rebuild(net);
+                        spin_unlock_bh(rt_hash_lock_addr(hash));
+
+                        hash = rt_hash(rt->fl.fl4_dst, rt->fl.fl4_src,
+                                        ifindex, rt_genid(net));
+                        goto restart;
                 }
         }
 
@@ -1477,7 +1483,7 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
                                                         &netevent);
 
                                 rt_del(hash, rth);
-                                if (!rt_intern_hash(hash, rt, &rt, NULL))
+                                if (!rt_intern_hash(hash, rt, &rt, NULL, rt->fl.oif))
                                         ip_rt_put(rt);
                                 goto do_next;
                         }
@@ -1931,7 +1937,7 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 
         in_dev_put(in_dev);
         hash = rt_hash(daddr, saddr, dev->ifindex, rt_genid(dev_net(dev)));
-        return rt_intern_hash(hash, rth, NULL, skb);
+        return rt_intern_hash(hash, rth, NULL, skb, dev->ifindex);
 
 e_nobufs:
         in_dev_put(in_dev);
@@ -2098,7 +2104,7 @@ static int ip_mkroute_input(struct sk_buff *skb,
         /* put it into the cache */
         hash = rt_hash(daddr, saddr, fl->iif,
                        rt_genid(dev_net(rth->u.dst.dev)));
-        return rt_intern_hash(hash, rth, NULL, skb);
+        return rt_intern_hash(hash, rth, NULL, skb, fl->iif);
 }
 
 /*
@@ -2255,7 +2261,7 @@ local_input:
         }
         rth->rt_type    = res.type;
         hash = rt_hash(daddr, saddr, fl.iif, rt_genid(net));
-        err = rt_intern_hash(hash, rth, NULL, skb);
+        err = rt_intern_hash(hash, rth, NULL, skb, fl.iif);
         goto done;
 
 no_route:
@@ -2502,7 +2508,7 @@ static int ip_mkroute_output(struct rtable **rp,
         if (err == 0) {
                 hash = rt_hash(oldflp->fl4_dst, oldflp->fl4_src, oldflp->oif,
                                rt_genid(dev_net(dev_out)));
-                err = rt_intern_hash(hash, rth, rp, NULL);
+                err = rt_intern_hash(hash, rth, rp, NULL, oldflp->oif);
         }
 
         return err;