[NETLINK] genetlink: Fix bugs spotted by Andrew Morton.

- panic() doesn't return.

- Don't forget to unlock on genl_register_family() error path

- genl_rcv_msg() is called via pointer so there's no point in declaring it
  `inline'.

Notes:

genl_ctrl_event() ignores the genlmsg_multicast() return value.

lots of things ignore the genl_ctrl_event() return value.

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 7 deletions

diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index 4ae1538c54a9..43e72419c868 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -238,7 +238,7 @@ int genl_register_family(struct genl_family *family)
                                         sizeof(struct nlattr *), GFP_KERNEL);
                 if (family->attrbuf == NULL) {
                         err = -ENOMEM;
-                        goto errout;
+                        goto errout_locked;
                 }
         } else
                 family->attrbuf = NULL;
@@ -288,7 +288,7 @@ int genl_unregister_family(struct genl_family *family)
         return -ENOENT;
 }
 
-static inline int genl_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh,
+static int genl_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh,
                                int *errp)
 {
         struct genl_ops *ops;
@@ -375,7 +375,7 @@ static void genl_rcv(struct sock *sk, int len)
         do {
                 if (genl_trylock())
                         return;
-                netlink_run_queue(sk, &qlen, &genl_rcv_msg);
+                netlink_run_queue(sk, &qlen, genl_rcv_msg);
                 genl_unlock();
         } while (qlen && genl_sock && genl_sock->sk_receive_queue.qlen);
 }
@@ -549,10 +549,8 @@ static int __init genl_init(void)
         netlink_set_nonroot(NETLINK_GENERIC, NL_NONROOT_RECV);
         genl_sock = netlink_kernel_create(NETLINK_GENERIC, GENL_MAX_ID,
                                           genl_rcv, THIS_MODULE);
-        if (genl_sock == NULL) {
+        if (genl_sock == NULL)
                 panic("GENL: Cannot initialize generic netlink\n");
-                return -ENOMEM;
-        }
 
         return 0;
 
@@ -560,7 +558,6 @@ errout_register:
         genl_unregister_family(&genl_ctrl);
 errout:
         panic("GENL: Cannot register controller: %d\n", err);
-        return err;
 }
 
 subsys_initcall(genl_init);