linux-kernel - Re: [PATCH] media: usb: fix memory leak in stk_camera

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Message-ID: <CAD-N9QV-N3gS5ySHxRL5eSPYUygwaLF=g9Qczjr8B6p--tsNBA@mail.gmail.com>
Date:   Fri, 3 Sep 2021 07:51:17 +0800
From:   Dongliang Mu <mudongliangabcd@...il.com>
To:     Pavel Skripkin <paskripkin@...il.com>
Cc:     Hans Verkuil <hverkuil@...all.nl>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        linux-media@...r.kernel.org,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [PATCH] media: usb: fix memory leak in stk_camera_probe

On Fri, Sep 3, 2021 at 2:14 AM Pavel Skripkin <paskripkin@...il.com> wrote:
>
> On 9/2/21 14:22, Dongliang Mu wrote:
> > On Thu, Sep 2, 2021 at 7:15 PM Hans Verkuil <hverkuil@...all.nl> wrote:
> >>
> >> On 02/09/2021 13:10, Dongliang Mu wrote:
> >> > On Thu, Sep 2, 2021 at 6:59 PM Dongliang Mu <mudongliangabcd@...il.com> wrote:
> >> >>
> >> >> On Thu, Sep 2, 2021 at 6:54 PM Mauro Carvalho Chehab <mchehab@...nel.org> wrote:
> >> >>>
> >> >>> Em Thu, 2 Sep 2021 12:39:37 +0200
> >> >>> Greg KH <gregkh@...uxfoundation.org> escreveu:
> >> >>>
> >> >>>> On Thu, Sep 02, 2021 at 06:23:36PM +0800, Dongliang Mu wrote:
> >> >>>>> On Fri, Jul 23, 2021 at 6:11 PM Dongliang Mu <mudongliangabcd@...il.com> wrote:
> >> >>>>>>
> >> >>>>>> On Wed, Jul 14, 2021 at 11:23 AM Dongliang Mu <mudongliangabcd@...il.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?
> >> >>>>
> >> >>>> This is the media developers domain, not much I can do here.
> >> >>>
> >> >>> There is a high volume of patches for the media subsystem. Anyway,
> >> >>> as your patch is at our patchwork instance:
> >> >>>
> >> >>>         https://patchwork.linuxtv.org/project/linux-media/patch/20210714032340.504836-1-mudongliangabcd@gmail.com/
> >> >>>
> >> >>> It should be properly tracked, and likely handled after the end of
> >> >>> the merge window.
> >> >
> >> > Hi Mauro,
> >> >
> >> > I found there is another fix [1] for the same memory leak from Pavel
> >> > Skripkin (already cc-ed in this thread).
> >> >
> >> > [1] https://www.spinics.net/lists/stable/msg479628.html
> >>
> >> Ah, that's why I marked it as Obsoleted :-)
> >
> > Oh, I see. If that patch is already merged, please remark my patch as Obsoleted.
> >
> > Curiously, I did not get an email notification to mark my patch as
> > Obsoleted before. Why?
> >
> >>
>
> Hi, Dongliang!
>
> Yep my patch has been merged already (1 month ago, I guess).

Yes. When I submit this patch, your patch is still pending. I did not
know someone is already sending a patch with good quality.

So I am curious if there are any methods to notify people there are
already some similar patches in the patchwork or some other resources.

>
>
>
>
> With regards,
> Pavel Skripkin