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 4.19-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-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f7fb0fe7de175502f8155144ebca6e8e89c0ab7d
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 41e37c17d9c28..997c246b971e7 100644
--- a/drivers/net/wireless/marvell/libertas/main.c
+++ b/drivers/net/wireless/marvell/libertas/main.c
@@ -216,7 +216,7 @@ 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);
