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 5.4-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-cmdresp-don-t-call-kfree_skb-under-spi.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 9cd5a240446aca20d52e9719e5d819ecc7aa0264
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 b73d083813985..5908f07d62ed7 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);
