linux-kernel - [PATCH 5.10 036/663] Bluetooth: hci_qca: Fix memleak in qca_controller

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Message-Id: <20210301161143.582291749@linuxfoundation.org>
Date:   Mon,  1 Mar 2021 17:04:44 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dinghao Liu <dinghao.liu@....edu.cn>,
        Marcel Holtmann <marcel@...tmann.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 036/663] Bluetooth: hci_qca: Fix memleak in qca_controller_memdump

From: Dinghao Liu <dinghao.liu@....edu.cn>

[ Upstream commit 71f8e707557b9bc25dc90a59a752528d4e7c1cbf ]

When __le32_to_cpu() fails, qca_memdump should be freed
just like when vmalloc() fails.

Fixes: d841502c79e3f ("Bluetooth: hci_qca: Collect controller memory dump during SSR")
Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
Signed-off-by: Marcel Holtmann <marcel@...tmann.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/bluetooth/hci_qca.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 244b8feba5232..5c26c7d941731 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -1020,7 +1020,9 @@ static void qca_controller_memdump(struct work_struct *work)
 			dump_size = __le32_to_cpu(dump->dump_size);
 			if (!(dump_size)) {
 				bt_dev_err(hu->hdev, "Rx invalid memdump size");
+				kfree(qca_memdump);
 				kfree_skb(skb);
+				qca->qca_memdump = NULL;
 				mutex_unlock(&qca->hci_memdump_lock);
 				return;
 			}
-- 
2.27.0