From: Yang Yingliang yangyingliang@huawei.com
[ Upstream commit 25c94b051592c010abe92c85b0485f1faedc83f3 ]
If device_register() returns error in vmbus_device_register(), the name allocated by dev_set_name() must be freed. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So fix this by calling put_device(), then the name can be freed in kobject_cleanup().
Fixes: 09d50ff8a233 ("Staging: hv: make the Hyper-V virtual bus code build") Signed-off-by: Yang Yingliang yangyingliang@huawei.com Reviewed-by: Michael Kelley mikelley@microsoft.com Link: https://lore.kernel.org/r/20221119081135.1564691-3-yangyingliang@huawei.com Signed-off-by: Wei Liu wei.liu@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hv/vmbus_drv.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index d4c5efc6e157..a1cfa7596853 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1863,6 +1863,7 @@ int vmbus_device_register(struct hv_device *child_device_obj) ret = device_register(&child_device_obj->device); if (ret) { pr_err("Unable to register child device\n"); + put_device(&child_device_obj->device); return ret; }