From 6f3eabcd041aa062cfabd2fc62194a33b507f51c Mon Sep 17 00:00:00 2001
From: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Date: Tue, 20 May 2014 13:14:22 +0200
Subject: [PATCH] mac802154: llsec: fix incorrect lock pairing

In encrypt, sec->lock is taken with read_lock_bh, so in the error path,
we must read_unlock_bh.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/mac802154/llsec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/mac802154/llsec.c b/net/mac802154/llsec.c
index a83674e..6edcb20 100644
--- a/net/mac802154/llsec.c
+++ b/net/mac802154/llsec.c
@@ -776,7 +776,7 @@ int mac802154_llsec_encrypt(struct mac802154_llsec *sec, struct sk_buff *skb)
 	return rc < 0 ? rc : 0;
 
 fail_read:
-	read_unlock(&sec->lock);
+	read_unlock_bh(&sec->lock);
 fail:
 	rcu_read_unlock();
 	return rc;
-- 
2.7.4