[PATCH 4.14 139/338] Bluetooth: RFCOMM: dont call kfree_skb() under spin_lock_irqsave()

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From: Yang Yingliang <yangyingliang@xxxxxxxxxx>

[ Upstream commit 0ba18967d4544955b2eff2fbc4f2a8750c4df90a ]

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: 81be03e026dc ("Bluetooth: RFCOMM: Replace use of memcpy_from_msg with bt_skb_sendmmsg")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 net/bluetooth/rfcomm/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 3f7d042a09b4..3d1287d02fdd 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -593,7 +593,7 @@ int rfcomm_dlc_send(struct rfcomm_dlc *d, struct sk_buff *skb)
 
 		ret = rfcomm_dlc_send_frag(d, frag);
 		if (ret < 0) {
-			kfree_skb(frag);
+			dev_kfree_skb_irq(frag);
 			goto unlock;
 		}
 
-- 
2.35.1






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