This is a note to let you know that I've just added the patch titled
Bluetooth: hci_qca: don't call kfree_skb() under spin_lock_irqsave()
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bluetooth-hci_qca-don-t-call-kfree_skb-under-spin_lo.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 33b9a963b5e0b38369e061413ad79672a0c61a38
Author: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date: Wed Dec 7 10:18:30 2022 +0800
Bluetooth: hci_qca: don't call kfree_skb() under spin_lock_irqsave()
[ Upstream commit df4cfc91208e0a98f078223793f5871b1a82cc54 ]
It is not allowed to call kfree_skb() from hardware interrupt
context or with interrupts being disabled. So replace kfree_skb()
with dev_kfree_skb_irq() under spin_lock_irqsave().
Fixes: 0ff252c1976d ("Bluetooth: hciuart: Add support QCA chipset for UART")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index f96e58de049b..f8b6823db04a 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -810,7 +810,7 @@ static int qca_enqueue(struct hci_uart *hu, struct sk_buff *skb)
default:
BT_ERR("Illegal tx state: %d (losing packet)",
qca->tx_ibs_state);
- kfree_skb(skb);
+ dev_kfree_skb_irq(skb);
break;
}
