linux-kernel - [PATCH] Bluetooth: btusb: Return when coredump trigger cmd fails

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Message-ID: <20231107054609.1.I4c7ab22148e168e3cde00f27b89748ff4bc651c2@changeid>
Date:   Tue,  7 Nov 2023 05:46:10 -0800
From:   Manish Mandlik <mmandlik@...gle.com>
To:     marcel@...tmann.org, luiz.dentz@...il.com
Cc:     chromeos-bluetooth-upstreaming@...omium.org,
        linux-bluetooth@...r.kernel.org,
        Manish Mandlik <mmandlik@...gle.com>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Tim Jiang <quic_tjiang@...cinc.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] Bluetooth: btusb: Return when coredump trigger cmd fails

Avoid freeing NULL skb when hci command fails.

Fixes: 20981ce2d5a5 ("Bluetooth: btusb: Add WCN6855 devcoredump support")

Signed-off-by: Manish Mandlik <mmandlik@...gle.com>
---

 drivers/bluetooth/btusb.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index b8e9de887b5d..a0359702c0a1 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -3463,8 +3463,11 @@ static void btusb_coredump_qca(struct hci_dev *hdev)
 	struct sk_buff *skb;
 
 	skb = __hci_cmd_sync(hdev, 0xfc0c, 1, param, HCI_CMD_TIMEOUT);
-	if (IS_ERR(skb))
+	if (IS_ERR(skb)) {
 		bt_dev_err(hdev, "%s: triggle crash failed (%ld)", __func__, PTR_ERR(skb));
+		return;
+	}
+
 	kfree_skb(skb);
 }
 
-- 
2.42.0.869.gea05f2083d-goog