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From:   Sven Eckelmann <sven@narfation.org>
To:     Dmitry Vyukov <dvyukov@google.com>
Cc:     syzkaller <syzkaller@googlegroups.com>,
        syzbot <syzbot+a229d8d995b74f8c4b6c@syzkaller.appspotmail.com>,
        a@unstable.cc, b.a.t.m.a.n@lists.open-mesh.org,
        David Miller <davem@davemloft.net>,
        Jakub Kicinski <jakub.kicinski@netronome.com>,
        Jamal Hadi Salim <jhs@mojatatu.com>,
        =?utf-8?B?SmnFmcOtIFDDrXJrbw==?= <jiri@resnulli.us>,
        LKML <linux-kernel@vger.kernel.org>, mareklindner@neomailbox.ch,
        netdev <netdev@vger.kernel.org>, sw@simonwunderlich.de,
        syzkaller-bugs <syzkaller-bugs@googlegroups.com>,
        vinicius.gomes@intel.com, wang.yi59@zte.com.cn,
        Cong Wang <xiyou.wangcong@gmail.com>
Subject: Re: WARNING in mark_lock (3)
Date:   Thu, 28 Nov 2019 09:46:49 +0100
Message-ID: <1809369.KjlzdqruN6@sven-edge>
In-Reply-To: <CACT4Y+YwNGWCXBazm+7GHpSw-gXsxmA8NA-o7O7Mpj3d-dhGYA@mail.gmail.com>
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On Thursday, 28 November 2019 09:40:32 CET Dmitry Vyukov wrote:
> On Thu, Nov 28, 2019 at 8:25 AM Sven Eckelmann <sven@narfation.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...

I was thinking more about rerunning the same bisect but tell it to assume 
"crashed: general protection fault in batadv_iv_ogm_queue_add" as OK instead 
of assuming that it is a crashed like the previous "crashed: WARNING in 
mark_lock". Just to get a non-bogus bisect result. Or try to rerun the
bisect between 40e220b4218b and 89d57dddd7d319ded00415790a0bb3c954b7e386

Kind regards,
	Sven
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