This is a note to let you know that I've just added the patch titled wifi: libertas: if_usb: don't call kfree_skb() under spin_lock_irqsave() to the 6.2-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-if_usb-don-t-call-kfree_skb-under-spin.patch and it can be found in the queue-6.2 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 522b0dc9391093724c8977eced6b922decee36a4 Author: Yang Yingliang <yangyingliang@xxxxxxxxxx> Date: Wed Dec 7 23:00:06 2022 +0800 wifi: libertas: if_usb: don't call kfree_skb() under spin_lock_irqsave() [ Upstream commit 3968e81ba644f10a7d45bae2539560db9edac501 ] 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: a3128feef6d5 ("libertas: use irqsave() in USB's complete callback") Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx> Link: https://lore.kernel.org/r/20221207150008.111743-3-yangyingliang@xxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/net/wireless/marvell/libertas/if_usb.c b/drivers/net/wireless/marvell/libertas/if_usb.c index 32fdc4150b605..2240b4db8c036 100644 --- a/drivers/net/wireless/marvell/libertas/if_usb.c +++ b/drivers/net/wireless/marvell/libertas/if_usb.c @@ -637,7 +637,7 @@ static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff, priv->resp_len[i] = (recvlength - MESSAGE_HEADER_LEN); memcpy(priv->resp_buf[i], recvbuff + MESSAGE_HEADER_LEN, priv->resp_len[i]); - kfree_skb(skb); + dev_kfree_skb_irq(skb); lbs_notify_command_response(priv, i); spin_unlock_irqrestore(&priv->driver_lock, flags);