From: Yang Yingliang <yangyingliang@xxxxxxxxxx>
[ Upstream commit da36a2a76b01b210ffaa55cdc2c99bc8783697c5 ]
In device_add(), dev_set_name() is called to allocate name, if it returns
error, the name need 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: f65c9bb3fb72 ("xen/pcpu: Xen physical cpus online/offline sys interface")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
Link: https://lore.kernel.org/r/20221110152441.401630-1-yangyingliang@xxxxxxxxxx
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/xen/pcpu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/xen/pcpu.c b/drivers/xen/pcpu.c
index 47aa3a1ccaf5..fd3a644b0855 100644
--- a/drivers/xen/pcpu.c
+++ b/drivers/xen/pcpu.c
@@ -228,7 +228,7 @@ static int register_pcpu(struct pcpu *pcpu)
err = device_register(dev);
if (err) {
- pcpu_release(dev);
+ put_device(dev);
return err;
}
--
2.35.1
