[PATCH 4/4] libertas: don't call kfree_skb() under spin_lock_irqsave() in lbs_mac_event_disconnected()

Yang Yingliang yangyingliang at huawei.com
Tue Dec 6 03:46:09 PST 2022


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: f52b041aed77 ("libertas: Add spinlock to avoid race condition")
Signed-off-by: Yang Yingliang <yangyingliang at huawei.com>
---
 drivers/net/wireless/marvell/libertas/cmdresp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/marvell/libertas/cmdresp.c b/drivers/net/wireless/marvell/libertas/cmdresp.c
index cb515c5584c1..74cb7551f427 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);
-- 
2.25.1




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