commit 64119e05f7b31e83e2555f6782e6cdc8f81c63f4
author YueHaibing <yuehaibing@huawei.com> Thu Jul 19 10:27:13 2018 +0800
committer David S. Miller <davem@davemloft.net> Sat Jul 21 16:14:39 2018 -0700
tree 87d44bf9e7cecbc6fa4cbb7e6d45f8ec32b62b4a
parent c1f897ce186a529a494441642125479d38727a3d

net: caif: Add a missing rcu_read_unlock() in caif_flow_cb

Add a missing rcu_read_unlock in the error path

Fixes: c95567c80352 ("caif: added check for potential null return")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/caif/caif_dev.c

diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index e0adcd1..711d715 100644
--- a/net/caif/caif_dev.c
+++ b/net/caif/caif_dev.c
@@ -131,8 +131,10 @@
 	caifd = caif_get(skb->dev);
 
 	WARN_ON(caifd == NULL);
-	if (caifd == NULL)
+	if (!caifd) {
+		rcu_read_unlock();
 		return;
+	}
 
 	caifd_hold(caifd);
 	rcu_read_unlock();