From: Max Kellermann <[email protected]> commit 88336e174645948da269e1812f138f727cd2896b upstream.
We should protect the device unregister patch too, at the error condition. Signed-off-by: Max Kellermann <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> Signed-off-by: Sasha Levin <[email protected]> --- drivers/media/media-devnode.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/media-devnode.c b/drivers/media/media-devnode.c index 6c56aebd8db0..86c7c3732c84 100644 --- a/drivers/media/media-devnode.c +++ b/drivers/media/media-devnode.c @@ -282,8 +282,11 @@ int __must_check media_devnode_register(struct media_devnode *mdev, return 0; error: + mutex_lock(&media_devnode_lock); cdev_del(&mdev->cdev); clear_bit(mdev->minor, media_devnode_nums); + mutex_unlock(&media_devnode_lock); + return ret; } -- 2.25.1
