netfilter: nfnetlink: fix missing rcu_read_unlock in nfnetlink_rcv_msg

Bug added in commit 6b75e3e8d664a9a (netfilter: nfnetlink: add RCU in
nfnetlink_rcv_msg())

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
index 3e797d1fcb94..791d56bbd74a 100644
--- a/net/netfilter/nfnetlink.c
+++ b/net/netfilter/nfnetlink.c
@@ -169,8 +169,10 @@ replay:
 
                 err = nla_parse(cda, ss->cb[cb_id].attr_count,
                                 attr, attrlen, ss->cb[cb_id].policy);
-                if (err < 0)
+                if (err < 0) {
+                        rcu_read_unlock();
                         return err;
+                }
 
                 if (nc->call_rcu) {
                         err = nc->call_rcu(net->nfnl, skb, nlh,