From: Loic Poulain <loic.poulain@xxxxxxxxxx>
[ Upstream commit 67b8fbead4685b36d290a0ef91c6ddffc4920ec9 ]
In case of hci send frame failure, skb is still owned
by the caller (hci_core) and then should not be freed.
This fixes crash on dragonboard-410c when sending SCO
packet. skb is freed by both btqcomsmd and hci_core.
Fixes: 1511cc750c3d ("Bluetooth: Introduce Qualcomm WCNSS SMD based HCI driver")
Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxx>
Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
drivers/bluetooth/btqcomsmd.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/bluetooth/btqcomsmd.c b/drivers/bluetooth/btqcomsmd.c
index bd810d01538a..093fd096f0c8 100644
--- a/drivers/bluetooth/btqcomsmd.c
+++ b/drivers/bluetooth/btqcomsmd.c
@@ -86,7 +86,8 @@ static int btqcomsmd_send(struct hci_dev *hdev, struct sk_buff *skb)
break;
}
- kfree_skb(skb);
+ if (!ret)
+ kfree_skb(skb);
return ret;
}
--
2.14.1