Merge branch 'linus' into perf/core

Conflicts:
	tools/perf/Makefile
	tools/perf/builtin-test.c
	tools/perf/perf.h
	tools/perf/tests/parse-events.c
	tools/perf/util/evsel.h

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 12 insertions, 6 deletions

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 432f4bb7723..df251424d81 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1163,8 +1163,12 @@ static bool rt_bind_exception(struct rtable *rt, struct fib_nh_exception *fnhe,
 	spin_lock_bh(&fnhe_lock);
 
 	if (daddr == fnhe->fnhe_daddr) {
-		struct rtable *orig;
-
+		struct rtable *orig = rcu_dereference(fnhe->fnhe_rth);
+		if (orig && rt_is_expired(orig)) {
+			fnhe->fnhe_gw = 0;
+			fnhe->fnhe_pmtu = 0;
+			fnhe->fnhe_expires = 0;
+		}
 		if (fnhe->fnhe_pmtu) {
 			unsigned long expires = fnhe->fnhe_expires;
 			unsigned long diff = expires - jiffies;
@@ -1181,7 +1185,6 @@ static bool rt_bind_exception(struct rtable *rt, struct fib_nh_exception *fnhe,
 		} else if (!rt->rt_gateway)
 			rt->rt_gateway = daddr;
 
-		orig = rcu_dereference(fnhe->fnhe_rth);
 		rcu_assign_pointer(fnhe->fnhe_rth, rt);
 		if (orig)
 			rt_free(orig);
@@ -1782,6 +1785,7 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
 	if (dev_out->flags & IFF_LOOPBACK)
 		flags |= RTCF_LOCAL;
 
+	do_cache = true;
 	if (type == RTN_BROADCAST) {
 		flags |= RTCF_BROADCAST | RTCF_LOCAL;
 		fi = NULL;
@@ -1790,6 +1794,8 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
 		if (!ip_check_mc_rcu(in_dev, fl4->daddr, fl4->saddr,
 				     fl4->flowi4_proto))
 			flags &= ~RTCF_LOCAL;
+		else
+			do_cache = false;
 		/* If multicast route do not exist use
 		 * default one, but do not gateway in this case.
 		 * Yes, it is hack.
@@ -1799,8 +1805,8 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
 	}
 
 	fnhe = NULL;
-	do_cache = fi != NULL;
-	if (fi) {
+	do_cache &= fi != NULL;
+	if (do_cache) {
 		struct rtable __rcu **prth;
 		struct fib_nh *nh = &FIB_RES_NH(*res);
 
@@ -2594,7 +2600,7 @@ int __init ip_rt_init(void)
 		pr_err("Unable to create route proc files\n");
 #ifdef CONFIG_XFRM
 	xfrm_init();
-	xfrm4_init(ip_rt_max_size);
+	xfrm4_init();
 #endif
 	rtnl_register(PF_INET, RTM_GETROUTE, inet_rtm_getroute, NULL, NULL);