From 22cc6b7a1dbb58da4afc539d9b7d470b23a25eea Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@kernel.org>
Date: Thu, 28 Nov 2019 19:24:27 +0100
Subject: [PATCH] Bluetooth: btusb: fix non-atomic allocation in completion handler
Git-commit: 22cc6b7a1dbb58da4afc539d9b7d470b23a25eea
Patch-mainline: v5.6-rc1
References: git-fixes
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>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
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 82fb2e7b2892..9b587e662b48 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;
}
--
2.16.4