From 3aa21311f36d8a2730c7ccef37235e951f23927b Mon Sep 17 00:00:00 2001
From: Zhengchao Shao <shaozhengchao@huawei.com>
Date: Wed, 4 Jan 2023 14:46:23 +0800
Subject: [PATCH] Bluetooth: hci_conn: Fix memory leaks
Git-commit: 3aa21311f36d8a2730c7ccef37235e951f23927b
Patch-mainline: v6.2-rc5
References: git-fixes

When hci_cmd_sync_queue() failed in hci_le_terminate_big() or
hci_le_big_terminate(), the memory pointed by variable d is not freed,
which will cause memory leak. Add release process to error path.

Fixes: eca0ae4aea66 ("Bluetooth: Add initial implementation of BIS connections")
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 net/bluetooth/hci_conn.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index d3e542c2fc3e..acf563fbdfd9 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -821,6 +821,7 @@ static void terminate_big_destroy(struct hci_dev *hdev, void *data, int err)
 static int hci_le_terminate_big(struct hci_dev *hdev, u8 big, u8 bis)
 {
 	struct iso_list_data *d;
+	int ret;
 
 	bt_dev_dbg(hdev, "big 0x%2.2x bis 0x%2.2x", big, bis);
 
@@ -831,8 +832,12 @@ static int hci_le_terminate_big(struct hci_dev *hdev, u8 big, u8 bis)
 	d->big = big;
 	d->bis = bis;
 
-	return hci_cmd_sync_queue(hdev, terminate_big_sync, d,
-				  terminate_big_destroy);
+	ret = hci_cmd_sync_queue(hdev, terminate_big_sync, d,
+				 terminate_big_destroy);
+	if (ret)
+		kfree(d);
+
+	return ret;
 }
 
 static int big_terminate_sync(struct hci_dev *hdev, void *data)
@@ -857,6 +862,7 @@ static int big_terminate_sync(struct hci_dev *hdev, void *data)
 static int hci_le_big_terminate(struct hci_dev *hdev, u8 big, u16 sync_handle)
 {
 	struct iso_list_data *d;
+	int ret;
 
 	bt_dev_dbg(hdev, "big 0x%2.2x sync_handle 0x%4.4x", big, sync_handle);
 
@@ -867,8 +873,12 @@ static int hci_le_big_terminate(struct hci_dev *hdev, u8 big, u16 sync_handle)
 	d->big = big;
 	d->sync_handle = sync_handle;
 
-	return hci_cmd_sync_queue(hdev, big_terminate_sync, d,
-				  terminate_big_destroy);
+	ret = hci_cmd_sync_queue(hdev, big_terminate_sync, d,
+				 terminate_big_destroy);
+	if (ret)
+		kfree(d);
+
+	return ret;
 }
 
 /* Cleanup BIS connection
-- 
2.35.3