Commit 22cc6b7a authored Nov 28, 2019 by Johan Hovold Committed by Marcel Holtmann Nov 28, 2019

Bluetooth: btusb: fix non-atomic allocation in completion handler



USB completion handlers are called in atomic context and must
specifically not allocate memory using GFP_KERNEL.

Fixes: a1c49c43 ("Bluetooth: btusb: Add protocol support for MediaTek MT7668U USB devices")
Cc: stable <stable@vger.kernel.org>     # 5.3
Cc: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

parent 3cd9d35e

drivers/bluetooth/btusb.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2602,7 +2602,7 @@ static void btusb_mtk_wmt_recv(struct urb *urb)
		* and being processed the events from there then.
		*/
		if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
		data->evt_skb = skb_clone(skb, GFP_KERNEL);
		data->evt_skb = skb_clone(skb, GFP_ATOMIC);
		if (!data->evt_skb)
		goto err_out;
		}

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