This is a note to let you know that I've just added the patch titled wifi: libertas: main: 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: wifi-libertas-main-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 3d2f6c5cc20f5e6c40468f9633945ebfeca73565 Author: Yang Yingliang <yangyingliang@xxxxxxxxxx> Date: Wed Dec 7 23:00:07 2022 +0800 wifi: libertas: main: don't call kfree_skb() under spin_lock_irqsave() [ Upstream commit f393df151540bf858effbd29ff572ab94e76a4c4 ] 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(). Compile tested only. Fixes: d2e7b3425c47 ("libertas: disable functionality when interface is down") Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx> Link: https://lore.kernel.org/r/20221207150008.111743-4-yangyingliang@xxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/net/wireless/marvell/libertas/main.c b/drivers/net/wireless/marvell/libertas/main.c index a94e50eb34bfb..ff0b3a0e9dcd6 100644 --- a/drivers/net/wireless/marvell/libertas/main.c +++ b/drivers/net/wireless/marvell/libertas/main.c @@ -217,7 +217,7 @@ int lbs_stop_iface(struct lbs_private *priv) spin_lock_irqsave(&priv->driver_lock, flags); priv->iface_running = false; - kfree_skb(priv->currenttxskb); + dev_kfree_skb_irq(priv->currenttxskb); priv->currenttxskb = NULL; priv->tx_pending_len = 0; spin_unlock_irqrestore(&priv->driver_lock, flags);