This is a note to let you know that I've just added the patch titled
Bluetooth: hci_h5: don't call kfree_skb() under spin_lock_irqsave()
to the 4.9-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_h5-don-t-call-kfree_skb-under-spin_loc.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a8e899aad9eab04a4f34bcf3ec8db58eac268a0e
Author: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date: Wed Dec 7 10:18:32 2022 +0800
Bluetooth: hci_h5: don't call kfree_skb() under spin_lock_irqsave()
[ Upstream commit 383630cc6758d619874c2e8bb2f68a61f3f9ef6e ]
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: 43eb12d78960 ("Bluetooth: Fix/implement Three-wire reliable packet sending")
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_h5.c b/drivers/bluetooth/hci_h5.c
index 0879d64b1caf..a947e3c0af18 100644
--- a/drivers/bluetooth/hci_h5.c
+++ b/drivers/bluetooth/hci_h5.c
@@ -266,7 +266,7 @@ static void h5_pkt_cull(struct h5 *h5)
break;
__skb_unlink(skb, &h5->unack);
- kfree_skb(skb);
+ dev_kfree_skb_irq(skb);
}
if (skb_queue_empty(&h5->unack))
