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Bluetooth: btqcomsmd: Fix skb double free corruption

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[ 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>
This commit is contained in:
Loic Poulain 2017-11-22 15:03:17 +01:00 committed by Greg Kroah-Hartman
parent f37dc00bac
commit dadb6c1a8d
1 changed files with 2 additions and 1 deletions
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3
drivers/bluetooth/btqcomsmd.c
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@ -85,7 +85,8 @@ static int btqcomsmd_send(struct hci_dev *hdev, struct sk_buff *skb)
break;
}
kfree_skb(skb);
if (!ret)
kfree_skb(skb);
return ret;
}