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

Fixes: a1c49c434e15 ("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 --- drivers/bluetooth/btusb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 70e385987d41..b6bf5c195d94 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -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; }