[IPV4]: Fix memory leak on error path during FIB initialization.

net->ipv4.fib_table_hash is not freed when fib4_rules_init failed.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 1 deletions

diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index d28261826bc2..d0507f4f848a 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -975,6 +975,7 @@ static struct notifier_block fib_netdev_notifier = {
 
 static int __net_init ip_fib_net_init(struct net *net)
 {
+        int err;
         unsigned int i;
 
         net->ipv4.fib_table_hash = kzalloc(
@@ -985,7 +986,14 @@ static int __net_init ip_fib_net_init(struct net *net)
         for (i = 0; i < FIB_TABLE_HASHSZ; i++)
                 INIT_HLIST_HEAD(&net->ipv4.fib_table_hash[i]);
 
-        return fib4_rules_init(net);
+        err = fib4_rules_init(net);
+        if (err < 0)
+                goto fail;
+        return 0;
+
+fail:
+        kfree(net->ipv4.fib_table_hash);
+        return err;
 }
 
 static void __net_exit ip_fib_net_exit(struct net *net)