This is a note to let you know that I've just added the patch titled
wifi: wl3501_cs: don't call kfree_skb() under spin_lock_irqsave()
to the 4.14-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-wl3501_cs-don-t-call-kfree_skb-under-spin_lock_.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 62b8b69151113f114279be189f1b520bcedde7a1
Author: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date: Wed Dec 7 23:04:53 2022 +0800
wifi: wl3501_cs: don't call kfree_skb() under spin_lock_irqsave()
[ Upstream commit 44bacbdf9066c590423259dbd6d520baac99c1a8 ]
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: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221207150453.114742-1-yangyingliang@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/wl3501_cs.c b/drivers/net/wireless/wl3501_cs.c
index f33ece9370473..cfde9b94b4b60 100644
--- a/drivers/net/wireless/wl3501_cs.c
+++ b/drivers/net/wireless/wl3501_cs.c
@@ -1329,7 +1329,7 @@ static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb,
} else {
++dev->stats.tx_packets;
dev->stats.tx_bytes += skb->len;
- kfree_skb(skb);
+ dev_kfree_skb_irq(skb);
if (this->tx_buffer_cnt < 2)
netif_stop_queue(dev);
