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

commit 22cc6b7a1d upstream.

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

Fixes: a1c49c434e ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Johan Hovold 2019-11-28 19:24:27 +01:00 committed by Greg Kroah-Hartman
parent 60b6aa2b71
commit 619c458f8f
1 changed files with 1 additions and 1 deletions
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2
drivers/bluetooth/btusb.c
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@ -2585,7 +2585,7 @@ 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;
}