commit 6f3eabcd041aa062cfabd2fc62194a33b507f51c
author Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Tue May 20 13:14:22 2014 +0200
committer David S. Miller <davem@davemloft.net> Thu May 22 15:24:13 2014 -0400
tree a9af119650dbecdfa82d5bbfb83761f589a9571e
parent 68bc74feb0ce1cc79cb2b5bbdfc592f30f37dab8

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

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 @@
 	return rc < 0 ? rc : 0;
 
 fail_read:
-	read_unlock(&sec->lock);
+	read_unlock_bh(&sec->lock);
 fail:
 	rcu_read_unlock();
 	return rc;