[PATCH 6.0 0547/1073] Bluetooth: hci_bcsp: dont call kfree_skb() under spin_lock_irqsave()

Greg Kroah-Hartman
2022-12-28T16:06:16Z

From: Yang Yingliang <yangyingliang@huawei.com>

[ Upstream commit 7b503e339c1a80bf0051ec2d19c3bc777014ac61 ]

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: 1da177e4c3f4 ("Linux-2.6.12-rc2")
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/hci_bcsp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bluetooth/hci_bcsp.c b/drivers/bluetooth/hci_bcsp.c
index cf4a56095817..8055f63603f4 100644
--- a/drivers/bluetooth/hci_bcsp.c
+++ b/drivers/bluetooth/hci_bcsp.c
@@ -378,7 +378,7 @@ static void bcsp_pkt_cull(struct bcsp_struct *bcsp)
i++;

__skb_unlink(skb, &bcsp->unack);
- kfree_skb(skb);
+ dev_kfree_skb_irq(skb);
}

if (skb_queue_empty(&bcsp->unack))
--
2.35.1