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Commit c7276ee6 authored by Yang Yingliang's avatar Yang Yingliang Committed by Greg Kroah-Hartman
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Bluetooth: btusb: don't call kfree_skb() under spin_lock_irqsave() 



[ Upstream commit b15a6bd3c80c77faec8317319b97f976b1a08332 ]

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: 803b5836 ("Bluetooth: btusb: Implement driver internal packet reassembly")
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: default avatarLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent d4460c82

drivers/bluetooth/btusb.c

+3 −3
Original line number Diff line number Diff line
@@ -440,13 +440,13 @@ static inline void btusb_free_frags(struct btusb_data *data) 


	spin_lock_irqsave(&data->rxlock, flags);



	kfree_skb(data->evt_skb);

	dev_kfree_skb_irq(data->evt_skb);

	data->evt_skb = NULL;



	kfree_skb(data->acl_skb);

	dev_kfree_skb_irq(data->acl_skb);

	data->acl_skb = NULL;



	kfree_skb(data->sco_skb);

	dev_kfree_skb_irq(data->sco_skb);

	data->sco_skb = NULL;



	spin_unlock_irqrestore(&data->rxlock, flags);