linux-kernel - Re: WARNING in add_event_to

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Message-ID: <20200110094502.2d6015ab@gandalf.local.home>
Date:   Fri, 10 Jan 2020 09:45:02 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     syzbot <syzbot+704bfe2c7d156640ad7a@...kaller.appspotmail.com>
Cc:     acme@...nel.org, acme@...hat.com,
        alexander.shishkin@...ux.intel.com, arvid.brodin@...en.se,
        ast@...nel.org, bpf@...r.kernel.org, daniel@...earbox.net,
        davem@...emloft.net, jbacik@...com, jolsa@...hat.com, kafai@...com,
        kernel-team@...com, linux-kernel@...r.kernel.org, mingo@...nel.org,
        mingo@...hat.com, namhyung@...nel.org, netdev@...r.kernel.org,
        peterz@...radead.org, songliubraving@...com,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de,
        torvalds@...ux-foundation.org, xiyou.wangcong@...il.com, yhs@...com
Subject: Re: WARNING in add_event_to_ctx

On Thu, 09 Jan 2020 22:50:00 -0800
syzbot <syzbot+704bfe2c7d156640ad7a@...kaller.appspotmail.com> wrote:

> syzbot suspects this bug was fixed by commit:

I think these reports need some more information. Like the sample crash
report, so we don't need to be clicking through links to find it.
Because I have no idea what bug was fixed.

-- Steve

> 
> commit 311633b604063a8a5d3fbc74d0565b42df721f68
> Author: Cong Wang <xiyou.wangcong@...il.com>
> Date:   Wed Jul 10 06:24:54 2019 +0000
> 
>      hsr: switch ->dellink() to ->ndo_uninit()
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1005033ee00000
> start commit:   6fbc7275 Linux 5.2-rc7
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=bff6583efcfaed3f
> dashboard link: https://syzkaller.appspot.com/bug?extid=704bfe2c7d156640ad7a
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1016165da00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12b27be5a00000
> 
> If the result looks correct, please mark the bug fixed by replying with:
> 
> #syz fix: hsr: switch ->dellink() to ->ndo_uninit()
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection