netdev - Re: FW: lock dep issue

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Message-ID: <CAM_iQpWBrHQy2-sfNmWkua=yAA8No+F4hiFS9hpGbrKBdxeZFw@mail.gmail.com>
Date:   Fri, 25 Jan 2019 15:10:54 -0800
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     "Ruhl, Michael J" <michael.j.ruhl@...el.com>
Cc:     "intel-wired-lan@...osl.org" <intel-wired-lan@...osl.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: FW: lock dep issue

On Fri, Jan 25, 2019 at 5:03 AM Ruhl, Michael J
<michael.j.ruhl@...el.com> wrote:
>
> Hi,
>
> While running a 5.0.0.rc1 kernel with the LOCKDEP debug configuration turned on, and I saw this LOCKDEP error:
...
>
> I saw this on the console while not doing anything on the system (i.e. no test were running, or any overt network work).
>
> Since this didn't seem like a good thing I thought I would drop this  note.

Yes, the offending commit has been reverted:

commit 5642e27bf6a935c1d0d9149e83d625dfba286463
Author: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Date:   Wed Jan 9 09:10:53 2019 -0800

    Revert "igb: reduce CPU0 latency when updating statistics"

Please try a newer kernel.

Thanks for your report.