netdev - Re: WARNING: bad unlock balance detected! (3)

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Message-ID: <e3d9d95fd07502cccf8ef97ba7b2e2adb4eefbb3.camel@baylibre.com>
Date:   Mon, 25 Mar 2019 12:54:49 +0100
From:   Jerome Brunet <jbrunet@...libre.com>
To:     syzbot <syzbot+f3e3434787332dfc1c47@...kaller.appspotmail.com>,
        davem@...emloft.net, devicetree@...r.kernel.org,
        khilman@...libre.com, kuznet@....inr.ac.ru,
        linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        mark.rutland@....com, netdev@...r.kernel.org, robh+dt@...nel.org,
        syzkaller-bugs@...glegroups.com, yoshfuji@...ux-ipv6.org
Subject: Re: WARNING: bad unlock balance detected! (3)

On Sat, 2019-03-23 at 07:14 -0700, syzbot wrote:
> syzbot has bisected this bug to:
> 
> commit ec01fb69ac8034ad6e839b31f9df167a110f868b
> Author: Jerome Brunet <jbrunet@...libre.com>
> Date:   Wed Jan 16 17:59:47 2019 +0000
> 
>      arm64: dts: meson: s400: fix emmc maximum rate
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10afb7cf200000
> start commit:   065b6c4c Merge tag 'devicetree-for-5.1' of git://git.kerne..
> git tree:       upstream
> final crash:    https://syzkaller.appspot.com/x/report.txt?x=12afb7cf200000
> console output: https://syzkaller.appspot.com/x/log.txt?x=14afb7cf200000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=ea4067c9a08ae046
> dashboard link: https://syzkaller.appspot.com/bug?extid=f3e3434787332dfc1c47
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12a10577200000
> 
> Reported-by: syzbot+f3e3434787332dfc1c47@...kaller.appspotmail.com
> Fixes: ec01fb69ac80 ("arm64: dts: meson: s400: fix emmc maximum rate")
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Hi David,

I'm not sure I understand what the problem reported is but I don't think a DT
patch could be the cause of a locking issue on x86.

If I missed something, feel free to let me know.

Cheers
Jerome