[IPV6]: Adjust inet6_exit() cleanup sequence against inet6_init()

This patch for adjust inet6_exit() to inverse sequence to inet6_init().

At ipv6_init, it first create proc_root/net/dev_snmp6 entry by call
ipv6_misc_proc_init(), then call addrconf_init() to create the corresponding
device entry at this directory, but at inet6_exit, ipv6_misc_proc_exit()
called first, then call addrconf_init().

Signed-off-by: Joe Jin <joe.jin@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 14 insertions, 10 deletions

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 3585d8fa7f02..5cac14a5c778 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -929,25 +929,28 @@ static void __exit inet6_exit(void)
 {
         /* First of all disallow new sockets creation. */
         sock_unregister(PF_INET6);
+
+        /* Cleanup code parts. */
+        ipv6_packet_cleanup();
+#ifdef CONFIG_IPV6_MIP6
+        mip6_fini();
+#endif
+        addrconf_cleanup();
+        ip6_flowlabel_cleanup();
+        ip6_route_cleanup();
 #ifdef CONFIG_PROC_FS
+
+        /* Cleanup code parts. */
         if6_proc_exit();
         ac6_proc_exit();
         ipv6_misc_proc_exit();
-        udp6_proc_exit();
         udplite6_proc_exit();
+        udp6_proc_exit();
         tcp6_proc_exit();
         raw6_proc_exit();
 #endif
-#ifdef CONFIG_IPV6_MIP6
-        mip6_fini();
-#endif
-        /* Cleanup code parts. */
-        ip6_flowlabel_cleanup();
-        addrconf_cleanup();
-        ip6_route_cleanup();
-        ipv6_packet_cleanup();
-        igmp6_cleanup();
         ipv6_netfilter_fini();
+        igmp6_cleanup();
         ndisc_cleanup();
         icmpv6_cleanup();
 #ifdef CONFIG_SYSCTL
@@ -955,6 +958,7 @@ static void __exit inet6_exit(void)
 #endif
         cleanup_ipv6_mibs();
         proto_unregister(&rawv6_prot);
+        proto_unregister(&udplitev6_prot);
         proto_unregister(&udpv6_prot);
         proto_unregister(&tcpv6_prot);
 }