4.9-stable review patch. If anyone has any objections, please let me know.
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From: Loic Poulain loic.poulain@linaro.org
[ 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@linaro.org Signed-off-by: Marcel Holtmann marcel@holtmann.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/bluetooth/btqcomsmd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/bluetooth/btqcomsmd.c +++ b/drivers/bluetooth/btqcomsmd.c @@ -85,7 +85,8 @@ static int btqcomsmd_send(struct hci_dev break; }
- kfree_skb(skb); + if (!ret) + kfree_skb(skb);
return ret; }