linux-kernel - [PATCH] Bluetooth: btintel: Fix missing free skb in btintel_setup

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Message-ID: <20221205135357.3961836-1-bobo.shaobowang@huawei.com>
Date:   Mon, 5 Dec 2022 21:53:57 +0800
From:   Wang ShaoBo <bobo.shaobowang@...wei.com>
To:     unlisted-recipients:; (no To-header on input)
CC:     <liwei391@...wei.com>, <marcel@...tmann.org>,
        <luiz.dentz@...il.com>, <johan.hedberg@...il.com>,
        <linux-bluetooth@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <bobo.shaobowang@...wei.com>
Subject: [PATCH] Bluetooth: btintel: Fix missing free skb in btintel_setup_combined()

skb allocated by __hci_cmd_sync would not be used whether in checking
for supported iBT hardware variants or after, we should free it in all
error branches, this patch makes the case read version failed or default
error case free skb before return.

Fixes: c86c7285bb08 ("Bluetooth: btintel: Fix the legacy bootloader returns tlv based version")
Fixes: 019a1caa7fd2 ("Bluetooth: btintel: Refactoring setup routine for bootloader devices")
Signed-off-by: Wang ShaoBo <bobo.shaobowang@...wei.com>
---
 drivers/bluetooth/btintel.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
index a657e9a3e96a..f6b4b7a1be4c 100644
--- a/drivers/bluetooth/btintel.c
+++ b/drivers/bluetooth/btintel.c
@@ -2524,7 +2524,7 @@ static int btintel_setup_combined(struct hci_dev *hdev)
 		 */
 		err = btintel_read_version(hdev, &ver);
 		if (err)
-			return err;
+			break;
 
 		/* Apply the device specific HCI quirks
 		 *
@@ -2566,7 +2566,8 @@ static int btintel_setup_combined(struct hci_dev *hdev)
 	default:
 		bt_dev_err(hdev, "Unsupported Intel hw variant (%u)",
 			   INTEL_HW_VARIANT(ver_tlv.cnvi_bt));
-		return -EINVAL;
+		err = -EINVAL;
+		break;
 	}
 
 exit_error:
-- 
2.25.1