This is a note to let you know that I've just added the patch titled
Bluetooth: btusb: Do not call kfree_skb() under spin_lock_irqsave()
to the 5.15-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-btusb-do-not-call-kfree_skb-under-spin_loc.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2e4d4467c5feb19fc175f9e05bcb2b30d7993c17
Author: Jinjie Ruan <ruanjinjie@xxxxxxxxxx>
Date: Wed Aug 23 11:46:37 2023 +0800
Bluetooth: btusb: Do not call kfree_skb() under spin_lock_irqsave()
[ Upstream commit 2a05334d7f91ff189692089c05fc48cc1d8204de ]
It is not allowed to call kfree_skb() from hardware interrupt
context or with hardware interrupts being disabled.
So replace kfree_skb() with dev_kfree_skb_irq() under
spin_lock_irqsave(). Compile tested only.
Fixes: baac6276c0a9 ("Bluetooth: btusb: handle mSBC audio over USB Endpoints")
Signed-off-by: Jinjie Ruan <ruanjinjie@xxxxxxxxxx>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 15d253325fd8a..84a42348b3bcb 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -1756,7 +1756,7 @@ static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
* alternate setting.
*/
spin_lock_irqsave(&data->rxlock, flags);
- kfree_skb(data->sco_skb);
+ dev_kfree_skb_irq(data->sco_skb);
data->sco_skb = NULL;
spin_unlock_irqrestore(&data->rxlock, flags);
