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-rw-r--r--net/netlink/af_netlink.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 21f9e30184e..29fef558aab 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -498,9 +498,12 @@ static int netlink_release(struct socket *sock)
netlink_table_grab();
if (netlink_is_kernel(sk)) {
- kfree(nl_table[sk->sk_protocol].listeners);
- nl_table[sk->sk_protocol].module = NULL;
- nl_table[sk->sk_protocol].registered = 0;
+ BUG_ON(nl_table[sk->sk_protocol].registered == 0);
+ if (--nl_table[sk->sk_protocol].registered == 0) {
+ kfree(nl_table[sk->sk_protocol].listeners);
+ nl_table[sk->sk_protocol].module = NULL;
+ nl_table[sk->sk_protocol].registered = 0;
+ }
} else if (nlk->subscriptions)
netlink_update_listeners(sk);
netlink_table_ungrab();
@@ -1389,6 +1392,7 @@ netlink_kernel_create(struct net *net, int unit, unsigned int groups,
nl_table[unit].registered = 1;
} else {
kfree(listeners);
+ nl_table[unit].registered++;
}
netlink_table_ungrab();