[ Upstream commit 11a087f484bf15ff65f0a9f277aa5a61fd07ed2a ]
We need to check whether this work we are canceling actually is
initialized.
Signed-off-by: Oliver Neukum <oneu...@suse.com>
Reported-by: syzbot+2e1ef9188251d9cc7...@syzkaller.appspotmail.com
Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+sams...@kernel.org>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/media/usb/uvc/uvc_ctrl.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index 14cff91b7aea..aa021498036a 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -2350,7 +2350,9 @@ void uvc_ctrl_cleanup_device(struct uvc_device *dev)
struct uvc_entity *entity;
unsigned int i;
- cancel_work_sync(&dev->async_ctrl.work);
+ /* Can be uninitialized if we are aborting on probe error. */
+ if (dev->async_ctrl.work.func)
+ cancel_work_sync(&dev->async_ctrl.work);
/* Free controls and control mappings for all entities. */
list_for_each_entry(entity, &dev->entities, list) {
--
2.20.1
