It will kfree NULL pointer if listeners is NULL. fix it.

Signed-off-by: bookjovi@gmail.com
net/netlink/af_netlink.c |    5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 980fe4a..1c7bf48 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1532,8 +1532,10 @@ netlink_kernel_create(struct net *net, int
unit, unsigned int groups,
       if (input)
               nlk_sk(sk)->netlink_rcv = input;

-       if (netlink_insert(sk, net, 0))
+       if (netlink_insert(sk, net, 0)) {
+               kfree(listeners);
               goto out_sock_release;
+       }

       nlk = nlk_sk(sk);
       nlk->flags |= NETLINK_KERNEL_SOCKET;
@@ -1553,7 +1555,6 @@ netlink_kernel_create(struct net *net, int unit,
unsigned int groups,
       return sk;

out_sock_release:
-       kfree(listeners);
       netlink_kernel_release(sk);
       return NULL;
--
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