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From:   Dongliang Mu <mudongliangabcd@gmail.com>
Date:   Thu, 2 Sep 2021 18:23:36 +0800
Message-ID: <CAD-N9QWj8w-xVAni2cGHyEei78iKEX_V0a00r0x3We7tfFGZjw@mail.gmail.com>
Subject: Re: [PATCH] media: usb: fix memory leak in stk_camera_probe
To:     Mauro Carvalho Chehab <mchehab@kernel.org>,
        Dongliang Mu <mudongliangabcd@gmail.com>
Cc:     linux-media@vger.kernel.org,
        linux-kernel <linux-kernel@vger.kernel.org>,
        Dan Carpenter <dan.carpenter@oracle.com>,
        Greg KH <gregkh@linuxfoundation.org>
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On Fri, Jul 23, 2021 at 6:11 PM Dongliang Mu <mudongliangabcd@gmail.com> wrote:
>
> On Wed, Jul 14, 2021 at 11:23 AM Dongliang Mu <mudongliangabcd@gmail.com> wrote:
> >
> > stk_camera_probe mistakenly execute usb_get_intf and increase the
> > refcount of interface->dev.
> >
> > Fix this by removing the execution of usb_get_intf.
>
> Any idea about this patch?

+cc Dan Carpenter, gregkh

There is no reply in this thread in one month. Can someone give some
feedback on this patch?

>
> >
> > Reported-by: Dongliang Mu <mudongliangabcd@gmail.com>
> > Fixes: 0aa77f6c2954 ("[media] move the remaining USB drivers to drivers/media/usb")
> > Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
> > ---
> >  drivers/media/usb/stkwebcam/stk-webcam.c | 1 -
> >  1 file changed, 1 deletion(-)
> >
> > diff --git a/drivers/media/usb/stkwebcam/stk-webcam.c b/drivers/media/usb/stkwebcam/stk-webcam.c
> > index a45d464427c4..5bd8e85b9452 100644
> > --- a/drivers/media/usb/stkwebcam/stk-webcam.c
> > +++ b/drivers/media/usb/stkwebcam/stk-webcam.c
> > @@ -1311,7 +1311,6 @@ static int stk_camera_probe(struct usb_interface *interface,
> >
> >         dev->udev = udev;
> >         dev->interface = interface;
> > -       usb_get_intf(interface);
> >
> >         if (hflip != -1)
> >                 dev->vsettings.hflip = hflip;
> > --
> > 2.25.1
> >