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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Pan Bian <bianpan2016@163.com>,
        Marcel Holtmann <marcel@holtmann.org>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.4 038/340] Bluetooth: Put HCI device if inquiry procedure interrupts
Date:   Mon,  1 Mar 2021 17:09:42 +0100
Message-Id: <20210301161050.194391516@linuxfoundation.org>
In-Reply-To: <20210301161048.294656001@linuxfoundation.org>
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From: Pan Bian <bianpan2016@163.com>

[ Upstream commit 28a758c861ff290e39d4f1ee0aa5df0f0b9a45ee ]

Jump to the label done to decrement the reference count of HCI device
hdev on path that the Inquiry procedure is interrupted.

Fixes: 3e13fa1e1fab ("Bluetooth: Fix hci_inquiry ioctl usage")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bluetooth/hci_core.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 9e19d5a3aac87..83b324419ad3d 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1317,8 +1317,10 @@ int hci_inquiry(void __user *arg)
 		 * cleared). If it is interrupted by a signal, return -EINTR.
 		 */
 		if (wait_on_bit(&hdev->flags, HCI_INQUIRY,
-				TASK_INTERRUPTIBLE))
-			return -EINTR;
+				TASK_INTERRUPTIBLE)) {
+			err = -EINTR;
+			goto done;
+		}
 	}
 
 	/* for unlimited number of responses we will use buffer with
-- 
2.27.0