netdev - [PATCH] rtnl: reset calcit fptr in rtnl

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Date:   Mon,  7 Nov 2016 23:22:19 +0100
From:   Mathias Krause <minipli@...glemail.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, Mathias Krause <minipli@...glemail.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
        Greg Rose <gregory.v.rose@...el.com>
Subject: [PATCH] rtnl: reset calcit fptr in rtnl_unregister()

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@...el.com>
Cc: Greg Rose <gregory.v.rose@...el.com>
Signed-off-by: Mathias Krause <minipli@...glemail.com>
---
 net/core/rtnetlink.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 189cc78c77eb..d4c601604bf7 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -275,6 +275,7 @@ 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;
 }
-- 
1.7.10.4