3 files changed, 10 insertions, 5 deletions

diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 57be71dd6a9e..23b9b3e86f4c 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -1111,11 +1111,10 @@ static void ip_fib_net_exit(struct net *net)
 {
         unsigned int i;
 
+        rtnl_lock();
 #ifdef CONFIG_IP_MULTIPLE_TABLES
         fib4_rules_exit(net);
 #endif
-
-        rtnl_lock();
         for (i = 0; i < FIB_TABLE_HASHSZ; i++) {
                 struct fib_table *tb;
                 struct hlist_head *head;
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 92825443fad6..fe54eba6d00d 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -278,11 +278,13 @@ static void __net_exit ipmr_rules_exit(struct net *net)
 {
         struct mr_table *mrt, *next;
 
+        rtnl_lock();
         list_for_each_entry_safe(mrt, next, &net->ipv4.mr_tables, list) {
                 list_del(&mrt->list);
                 ipmr_free_table(mrt);
         }
         fib_rules_unregister(net->ipv4.mr_rules_ops);
+        rtnl_unlock();
 }
 #else
 #define ipmr_for_each_table(mrt, net) \
@@ -308,7 +310,10 @@ static int __net_init ipmr_rules_init(struct net *net)
 
 static void __net_exit ipmr_rules_exit(struct net *net)
 {
+        rtnl_lock();
         ipmr_free_table(net->ipv4.mrt);
+        net->ipv4.mrt = NULL;
+        rtnl_unlock();
 }
 #endif
 
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index fb4cf8b8e121..f501ac048366 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -3105,10 +3105,11 @@ static int tcp_clean_rtx_queue(struct sock *sk, int prior_fackets,
                         if (!first_ackt.v64)
                                 first_ackt = last_ackt;
 
-                        if (!(sacked & TCPCB_SACKED_ACKED))
+                        if (!(sacked & TCPCB_SACKED_ACKED)) {
                                 reord = min(pkts_acked, reord);
-                        if (!after(scb->end_seq, tp->high_seq))
-                                flag |= FLAG_ORIG_SACK_ACKED;
+                                if (!after(scb->end_seq, tp->high_seq))
+                                        flag |= FLAG_ORIG_SACK_ACKED;
+                        }
                 }
 
                 if (sacked & TCPCB_SACKED_ACKED)