[PATCH 6.0 0543/1073] Bluetooth: btusb: dont call kfree_skb() under spin_lock_irqsave()

Greg Kroah-Hartman
2022-12-28T16:08:35Z

From: Yang Yingliang <yangyingliang@huawei.com>

[ 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: 803b58367ffb ("Bluetooth: btusb: Implement driver internal packet reassembly")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/bluetooth/btusb.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 882b5893f910..a132e7aba605 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -788,13 +788,13 @@ 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);
--
2.35.1