linux-kernel - Re: [syzbot] BUG: corrupted list in hci_conn_add

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Date:   Sun, 6 Nov 2022 15:24:53 -0800
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     syzbot <syzbot+b30ccad4684cce846cef@...kaller.appspotmail.com>
Cc:     davem@...emloft.net, edumazet@...gle.com,
        gregkh@...uxfoundation.org, johan.hedberg@...il.com,
        kuba@...nel.org, linux-bluetooth@...r.kernel.org,
        linux-kernel@...r.kernel.org, luiz.dentz@...il.com,
        luiz.von.dentz@...el.com, marcel@...tmann.org,
        netdev@...r.kernel.org, pabeni@...hat.com, rafael@...nel.org,
        syzkaller-bugs@...glegroups.com, yin31149@...il.com
Subject: Re: [syzbot] BUG: corrupted list in hci_conn_add_sysfs

On Fri, 4 Nov 2022 at 10:56, syzbot
<syzbot+b30ccad4684cce846cef@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 448a496f760664d3e2e79466aa1787e6abc922b5
> Author: Luiz Augusto von Dentz <luiz.von.dentz@...el.com>
> Date:   Mon Sep 19 17:56:59 2022 +0000
>
>     Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1052f8fe880000
> start commit:   dc164f4fb00a Merge tag 'for-linus-6.0-rc7' of git://git.ke..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=122d7bd4fc8e0ecb
> dashboard link: https://syzkaller.appspot.com/bug?extid=b30ccad4684cce846cef
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1110db8c880000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13e58aef080000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection


Looks reasonable based on subsystem and the patch:

#syz fix: Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times