From afa42dbbb1f20d09dd541e4c3381fbb051dc83d8 Mon Sep 17 00:00:00 2001 From: Yang Yingliang Date: Thu, 8 Dec 2022 22:35:17 +0800 Subject: wifi: rtl8xxxu: don't call dev_kfree_skb() under spin_lock_irqsave() [ Upstream commit 4c2005ac87685907b3719b4f40215b578efd27c4 ] It is not allowed to call kfree_skb() or consume_skb() from hardware interrupt context or with hardware interrupts being disabled. It should use dev_kfree_skb_irq() or dev_consume_skb_irq() instead. The difference between them is free reason, dev_kfree_skb_irq() means the SKB is dropped in error and dev_consume_skb_irq() means the SKB is consumed in normal. In this case, dev_kfree_skb() is called to free and drop the SKB when it's shutdown, so replace it with dev_kfree_skb_irq(). Compile tested only. Fixes: 26f1fad29ad9 ("New driver: rtl8xxxu (mac80211)") Signed-off-by: Yang Yingliang Reviewed-by: Ping-Ke Shih Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20221208143517.2383424-1-yangyingliang@huawei.com Signed-off-by: Sasha Levin --- drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c index e445084e358f..8d91939dea8c 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c @@ -5270,7 +5270,7 @@ static void rtl8xxxu_queue_rx_urb(struct rtl8xxxu_priv *priv, pending = priv->rx_urb_pending_count; } else { skb = (struct sk_buff *)rx_urb->urb.context; - dev_kfree_skb(skb); + dev_kfree_skb_irq(skb); usb_free_urb(&rx_urb->urb); } -- cgit v1.2.3