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From:   Dmitry Vyukov <dvyukov@google.com>
Date:   Fri, 14 May 2021 09:50:05 +0200
Message-ID: <CACT4Y+ZFfu6a4z_fFHLupQQndH-1dn=z9s41MAmPK=QmCg+aCA@mail.gmail.com>
Subject: Re: [syzbot] WARNING: ODEBUG bug in bt_host_release
To:     syzbot <syzbot+0ce8a29c6c6469b16632@syzkaller.appspotmail.com>
Cc:     David Miller <davem@davemloft.net>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Johan Hedberg <johan.hedberg@gmail.com>,
        Jakub Kicinski <kuba@kernel.org>, linma@zju.edu.cn,
        linux-bluetooth <linux-bluetooth@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>, luiz.dentz@gmail.com,
        Marcel Holtmann <marcel@holtmann.org>,
        netdev <netdev@vger.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@googlegroups.com>,
        syzscope@gmail.com
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On Fri, May 14, 2021 at 8:33 AM syzbot
<syzbot+0ce8a29c6c6469b16632@syzkaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit e2cb6b891ad2b8caa9131e3be70f45243df82a80
> Author: Lin Ma <linma@zju.edu.cn>
> Date:   Mon Apr 12 11:17:57 2021 +0000
>
>     bluetooth: eliminate the potential race condition when removing the HCI controller
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15427145d00000
> start commit:   f873db9a Merge tag 'io_uring-5.9-2020-08-21' of git://git...
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=bb68b9e8a8cc842f
> dashboard link: https://syzkaller.appspot.com/bug?extid=0ce8a29c6c6469b16632
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10310972900000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: bluetooth: eliminate the potential race condition when removing the HCI controller
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Looks reasonable based on the commit and bisection log.
Unfortunately I cannot easily send this as my email client will wrap
the commit title line (longer than 80 chars)...