From 0c2ac7d4f08d330dc5b092b4beba9ef88602d369 Mon Sep 17 00:00:00 2001
From: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
Date: Tue, 25 Feb 2020 18:47:53 +0530
Subject: [PATCH] Bluetooth: Use list_for_each_entry_rcu() to traverse RCU list in RCU read-side CS
Git-commit: 0c2ac7d4f08d330dc5b092b4beba9ef88602d369
Patch-mainline: v5.7-rc1
References: jsc#SLE-13430
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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
net/bluetooth/hci_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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;
--
2.16.4