From: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
Date: Tue, 25 Feb 2020 13:17:53 +0000 (+0530)
Subject: Bluetooth: Use list_for_each_entry_rcu() to traverse RCU list in RCU read-side CS
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=0c2ac7d4f08d330dc5b092b4beba9ef88602d369;p=openwrt%2Fstaging%2Fblogic.git

Bluetooth: Use list_for_each_entry_rcu() to traverse RCU list in RCU read-side CS

In function hci_is_blocked_key() RCU list is traversed with
list_for_each_entry() in RCU read-side CS.
Use list_for_each_entry_rcu() instead.

Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
---

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 8ddd1bea02be..4e6d61a95b20 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -2327,7 +2327,7 @@ bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16])
 	struct blocked_key *b;
 
 	rcu_read_lock();
-	list_for_each_entry(b, &hdev->blocked_keys, list) {
+	list_for_each_entry_rcu(b, &hdev->blocked_keys, list) {
 		if (b->type == type && !memcmp(b->val, val, sizeof(b->val))) {
 			blocked = true;
 			break;