netdev - Re: refcount_warn_saturate WARNING (was: Re: cls_flower: Fix the behavior using port ranges with hw-offload)

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Message-ID: <CAM_iQpWOhXR=x10i0S88qXTfG2nv9EypONTp6_vpBzs=iOySRQ@mail.gmail.com>
Date:   Thu, 19 Dec 2019 12:50:14 -0800
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Yoshiki Komachi <komachi.yoshiki@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Jiri Pirko <jiri@...nulli.us>,
        Amritha Nambiar <amritha.nambiar@...el.com>,
        netdev <netdev@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: refcount_warn_saturate WARNING (was: Re: cls_flower: Fix the
 behavior using port ranges with hw-offload)

On Thu, Dec 19, 2019 at 2:12 AM Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
> I still see the below warning on m68k/ARAnyM during boot with v5.5-rc2
> and next-20191219.
> Reverting commit 8ffb055beae58574 ("cls_flower: Fix the behavior using
> port ranges with hw-offload") fixes that.
>
> As this is networking, perhaps this is seen on big-endian only?
> Or !CONFIG_SMP?
>
> Do you have a clue?
> I'm especially worried as this commit is already being backported to stable.
> Thanks!

I did a quick look at the offending commit, I can't even connect it to
any dst refcnt.

Do you have any more information? Like what happened before the
warning? Does your system use cls_flower filters at all? If so, please
share your tc configurations.

Thanks.