Revert "ipv6: Prevent access to uninitialized fib_table_hash via /proc/net/ipv6_route"

This reverts commit 2a0c451ade8e1783c5d453948289e4a978d417c9.

It causes crashes, because now ip6_null_entry is used before
it is initialized.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 11 deletions

diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index fbd4aff..74c21b9 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -1692,25 +1692,21 @@ int __init fib6_init(void)
 	ret = register_pernet_subsys(&fib6_net_ops);
 	if (ret)
 		goto out_kmem_cache_create;
+
+	ret = __rtnl_register(PF_INET6, RTM_GETROUTE, NULL, inet6_dump_fib,
+			      NULL);
+	if (ret)
+		goto out_unregister_subsys;
 out:
 	return ret;
 
+out_unregister_subsys:
+	unregister_pernet_subsys(&fib6_net_ops);
 out_kmem_cache_create:
 	kmem_cache_destroy(fib6_node_kmem);
 	goto out;
 }
 
-int __init fib6_init_late(void)
-{
-	return __rtnl_register(PF_INET6, RTM_GETROUTE, NULL, inet6_dump_fib,
-			       NULL);
-}
-
-void fib6_cleanup_late(void)
-{
-	rtnl_unregister(PF_INET6, RTM_GETROUTE);
-}
-
 void fib6_gc_cleanup(void)
 {
 	unregister_pernet_subsys(&fib6_net_ops);