3.16.7-ckt2 -stable review patch.  If anyone has any objections, please let me 
know.

------------------

From: Hiroaki SHIMODA <[email protected]>

commit 6251edd932ce3faadbfe27b0a0fe79780e0972e9 upstream.

Even if netlink_kernel_cfg::unbind is implemented the unbind() method is
not called, because cfg->unbind is omitted in __netlink_kernel_create().
And fix wrong argument of test_bit() and off by one problem.

At this point, no unbind() method is implemented, so there is no real
issue.

Fixes: 4f520900522f ("netlink: have netlink per-protocol bind function return 
an error code.")
Signed-off-by: Hiroaki SHIMODA <[email protected]>
Cc: Richard Guy Briggs <[email protected]>
Acked-by: Richard Guy Briggs <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Luis Henriques <[email protected]>
---
 net/netlink/af_netlink.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index d158e1c888d8..0ed3c2b65fb7 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1491,7 +1491,7 @@ static void netlink_unbind(int group, long unsigned int 
groups,
                return;
 
        for (undo = 0; undo < group; undo++)
-               if (test_bit(group, &groups))
+               if (test_bit(undo, &groups))
                        nlk->netlink_unbind(undo);
 }
 
@@ -1543,7 +1543,7 @@ static int netlink_bind(struct socket *sock, struct 
sockaddr *addr,
                        netlink_insert(sk, net, nladdr->nl_pid) :
                        netlink_autobind(sock);
                if (err) {
-                       netlink_unbind(nlk->ngroups - 1, groups, nlk);
+                       netlink_unbind(nlk->ngroups, groups, nlk);
                        return err;
                }
        }
@@ -2563,6 +2563,7 @@ __netlink_kernel_create(struct net *net, int unit, struct 
module *module,
                nl_table[unit].module = module;
                if (cfg) {
                        nl_table[unit].bind = cfg->bind;
+                       nl_table[unit].unbind = cfg->unbind;
                        nl_table[unit].flags = cfg->flags;
                        if (cfg->compare)
                                nl_table[unit].compare = cfg->compare;
-- 
2.1.0

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