[PATCH 4.19 044/247] Bluetooth: Put HCI device if inquiry procedure interrupts

From: Greg Kroah-Hartman
Date: Mon Mar 01 2021 - 15:05:47 EST


From: Pan Bian <bianpan2016@xxxxxxx>

[ 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@xxxxxxx>
Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 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
--
2.27.0