This is a note to let you know that I've just added the patch titled wifi: libertas: cmdresp: don't 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: wifi-libertas-cmdresp-don-t-call-kfree_skb-under-spi.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 6a176406346b7438a804c7d93fa30d524c2cc62c Author: Yang Yingliang <yangyingliang@xxxxxxxxxx> Date: Wed Dec 7 23:00:08 2022 +0800 wifi: libertas: cmdresp: don't call kfree_skb() under spin_lock_irqsave() [ Upstream commit 708a49a64237f19bd404852f297aaadbc9e7fee0 ] 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: f52b041aed77 ("libertas: Add spinlock to avoid race condition") Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx> Link: https://lore.kernel.org/r/20221207150008.111743-5-yangyingliang@xxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/net/wireless/marvell/libertas/cmdresp.c b/drivers/net/wireless/marvell/libertas/cmdresp.c index cb515c5584c1f..74cb7551f4275 100644 --- a/drivers/net/wireless/marvell/libertas/cmdresp.c +++ b/drivers/net/wireless/marvell/libertas/cmdresp.c @@ -48,7 +48,7 @@ void lbs_mac_event_disconnected(struct lbs_private *priv, /* Free Tx and Rx packets */ spin_lock_irqsave(&priv->driver_lock, flags); - 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);