| Message ID | 20221102093112.2678-1-yangyingliang@huawei.com |
|---|---|
| State | New |
| Headers | show |
| Series | scsi: raid_class: fix possible memory leak in raid_component_add() | expand |
diff --git a/drivers/scsi/raid_class.c b/drivers/scsi/raid_class.c index 898a0bdf8df6..86ed1f66d749 100644 --- a/drivers/scsi/raid_class.c +++ b/drivers/scsi/raid_class.c @@ -250,8 +250,7 @@ int raid_component_add(struct raid_template *r,struct device *raid_dev, err_out: list_del(&rc->node); rd->component_count--; - put_device(component_dev); - kfree(rc); + put_device(&rc->dev); return err; } EXPORT_SYMBOL(raid_component_add);
Afer commit 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array"), the name of device is allocated dynamically, it need be freed if device_add(&rc->dev) returns error, as comment of device_add() says, it should call put_device() to drop the reference on error. Fix it by calling put_device(&rc->dev) so that the name can be freed in kobject_cleanup(). In raid_component_release(), it will put refcount of component_dev and free 'rc', so the release code of them in error path can be removed. Fixes: 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array") Cc: "James E.J. Bottomley" <jejb@linux.ibm.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/scsi/raid_class.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)