net: Make sure BHs are disabled in sock_prot_inuse_add()

There is still a call to sock_prot_inuse_add() in af_netlink
while in a preemptable section. Add explicit BH disable around
this call.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index c7d76579bf3c..9eb895c7a2a9 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -515,7 +515,9 @@ static int netlink_release(struct socket *sock)
         kfree(nlk->groups);
         nlk->groups = NULL;
 
+        local_bh_disable();
         sock_prot_inuse_add(sock_net(sk), &netlink_proto, -1);
+        local_bh_enable();
         sock_put(sk);
         return 0;
 }