Return-Path: From: Fugang Duan To: CC: , , , Subject: [PATCH] Bluetooth: add hdev check to avoid passing null pointer Date: Thu, 21 Jan 2016 12:45:58 +0800 Message-ID: <1453351558-7726-1-git-send-email-b38611@freescale.com> MIME-Version: 1.0 Content-Type: text/plain List-ID: Function hci_mgmt_cmd() may pass hdev with null pointer to hci_mgmt_handler->func() like below code: err = handler->func(sk, hdev, cp, len); Add hdev check to avoid passing null pointer. Signed-off-by: Fugang Duan --- net/bluetooth/hci_sock.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index 1298d72..7fdfc80 100644 --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -1186,6 +1186,8 @@ static int hci_mgmt_cmd(struct hci_mgmt_chan *chan, struct sock *sk, if (hdev && chan->hdev_init) chan->hdev_init(sk, hdev); + else if (!hdev) + goto done; cp = buf + sizeof(*hdr); -- 1.9.1