diff options
| -rw-r--r-- | net/netlink/af_netlink.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 21f9e30184e2..29fef558aab6 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(); |