From: Pan Bian <bianpan2016@163.com>
Date: Thu, 21 Jan 2021 08:10:45 +0000 (-0800)
Subject: Bluetooth: Put HCI device if inquiry procedure interrupts
X-Git-Tag: v4.19.178~204
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=33840f94e3c7824f171ba283f2b9c3cd00f4c831;p=thirdparty%2Fkernel%2Fstable.git

Bluetooth: Put HCI device if inquiry procedure interrupts

[ 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>
---

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index e03faca84919e..04d6f50798c98 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1316,8 +1316,10 @@ 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