rtnl: reset calcit fptr in rtnl_unregister()

commit f567e950bf51290755a2539ff2aaef4c26f735d3 upstream.

To avoid having dangling function pointers left behind, reset calcit in
rtnl_unregister(), too.

This is no issue so far, as only the rtnl core registers a netlink
handler with a calcit hook which won't be unregistered, but may become
one if new code makes use of the calcit hook.

Fixes: c7ac8679bec9 ("rtnetlink: Compute and store minimum ifinfo...")
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index a9da58204afa4403ffedc2b290b03b9e5d659978..6f32d3086c7a3a2bb28aa7bd4910ddbfe9732c72 100644 (file)
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -253,6 +253,7 @@ int rtnl_unregister(int protocol, int msgtype)
 
        rtnl_msg_handlers[protocol][msgindex].doit = NULL;
        rtnl_msg_handlers[protocol][msgindex].dumpit = NULL;
+       rtnl_msg_handlers[protocol][msgindex].calcit = NULL;
 
        return 0;
 }