From: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Date: Tue, 20 May 2014 11:14:22 +0000 (+0200)
Subject: mac802154: llsec: fix incorrect lock pairing
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6f3eabcd041aa062cfabd2fc62194a33b507f51c;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

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>
---

diff --git a/net/mac802154/llsec.c b/net/mac802154/llsec.c
index a83674edaafd..6edcb20c2e70 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;