On Fri, Jan 28, 2022 at 01:56:04PM -0800, Juan Vazquez wrote:
> On Wed, Jan 26, 2022 at 05:52:46AM +0000, Miaoqian Lin wrote:
> > kobject_init_and_add() takes reference even when it fails.
> > According to the doc of kobject_init_and_add()：
> >
> > If this function returns an error, kobject_put() must be called to
> > properly clean up the memory associated with the object.
> >
> > Fix memory leak by calling kobject_put().
> >
> > Fixes: c2e5df616e1a ("vmbus: add per-channel sysfs info")
> > Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
> > ---
> > drivers/hv/vmbus_drv.c | 4 +++-
> > 1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
> > index 17bf55fe3169..9e055697783b 100644
> > --- a/drivers/hv/vmbus_drv.c
> > +++ b/drivers/hv/vmbus_drv.c
> > @@ -2028,8 +2028,10 @@ int vmbus_add_channel_kobj(struct hv_device *dev, struct vmbus_channel *channel)
> > kobj->kset = dev->channels_kset;
> > ret = kobject_init_and_add(kobj, &vmbus_chan_ktype, NULL,
> > "%u", relid);
> > - if (ret)
> > + if (ret) {
> > + kobject_put(kobj);
> > return ret;
> > + }
> >
> > ret = sysfs_create_group(kobj, &vmbus_chan_group);
> If sysfs_create_group() fails same cleanup I think is required.
>
> Later kobject_uevent() may fail according to doc, but there is no error
> handling, maybe a good moment to consider adding it and do same cleanup.
Miaoqian, are you going to post a new version to address Juan's comment
here?
Thanks,
Wei.
> >
> > --
> > 2.17.1
