This is a note to let you know that I've just added the patch titled
Bluetooth: hci_bcsp: don't call kfree_skb() under spin_lock_irqsave()
to the 5.4-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_bcsp-don-t-call-kfree_skb-under-spin_l.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 0107aede7620afcf874d2c81a09e6ed1d3767988
Author: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date: Wed Dec 7 10:18:33 2022 +0800
Bluetooth: hci_bcsp: don't call kfree_skb() under spin_lock_irqsave()
[ Upstream commit 7b503e339c1a80bf0051ec2d19c3bc777014ac61 ]
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: 1da177e4c3f4 ("Linux-2.6.12-rc2")
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_bcsp.c b/drivers/bluetooth/hci_bcsp.c
index cf4a56095817..8055f63603f4 100644
--- a/drivers/bluetooth/hci_bcsp.c
+++ b/drivers/bluetooth/hci_bcsp.c
@@ -378,7 +378,7 @@ static void bcsp_pkt_cull(struct bcsp_struct *bcsp)
i++;
__skb_unlink(skb, &bcsp->unack);
- kfree_skb(skb);
+ dev_kfree_skb_irq(skb);
}
if (skb_queue_empty(&bcsp->unack))
