linux-kernel - Re: WARNING in mark

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Message-ID: <CACT4Y+YwNGWCXBazm+7GHpSw-gXsxmA8NA-o7O7Mpj3d-dhGYA@mail.gmail.com>
Date:   Thu, 28 Nov 2019 09:40:32 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Sven Eckelmann <sven@...fation.org>,
        syzkaller <syzkaller@...glegroups.com>
Cc:     syzbot <syzbot+a229d8d995b74f8c4b6c@...kaller.appspotmail.com>,
        a@...table.cc, b.a.t.m.a.n@...ts.open-mesh.org,
        David Miller <davem@...emloft.net>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Jiří Pírko <jiri@...nulli.us>,
        LKML <linux-kernel@...r.kernel.org>, mareklindner@...mailbox.ch,
        netdev <netdev@...r.kernel.org>, sw@...onwunderlich.de,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        vinicius.gomes@...el.com, wang.yi59@....com.cn,
        Cong Wang <xiyou.wangcong@...il.com>
Subject: Re: WARNING in mark_lock (3)

On Thu, Nov 28, 2019 at 8:25 AM Sven Eckelmann <sven@...fation.org> wrote:
>
> On Thursday, 28 November 2019 03:00:01 CET syzbot wrote:
> [...]
> > bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=132ee536e00000
> > start commit:   89d57ddd Merge tag 'media/v5.5-1' of git://git.kernel.org/..
> > git tree:       upstream
> > final crash:    https://syzkaller.appspot.com/x/report.txt?x=10aee536e00000
>
> Can the syzbot infrastructure be told to ignore this crash in the bisect run?
> Because this should be an unrelated crash which is (hopefully) fixed in
> 40e220b4218b ("batman-adv: Avoid free/alloc race when handling OGM buffer").

+syzkaller mailing list for syzbot discussion

Hi Sven,

There is no such functionality at the moment.
What exactly do you mean? Somehow telling it interactively? Or
hardcode some set of crashes for linux? I don't see how any of these
options can really work...