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From:   Dmitry Vyukov <dvyukov@google.com>
Date:   Mon, 19 Jun 2023 08:10:19 +0200
Message-ID: <CACT4Y+ZEL5FKx+R7poFFE_v2Di=qFRfv7GNnEoa9f9Y4r6ZK=w@mail.gmail.com>
Subject: Re: [syzbot] [bluetooth?] possible deadlock in sco_conn_del
To:     syzbot <syzbot+b825d87fe2d043e3e652@syzkaller.appspotmail.com>
Cc:     davem@davemloft.net, edumazet@google.com, fgheet255t@gmail.com,
        hdanton@sina.com, johan.hedberg@gmail.com, josephsih@chromium.org,
        kuba@kernel.org, linux-bluetooth@vger.kernel.org,
        linux-kernel@vger.kernel.org, lrh2000@pku.edu.cn,
        luiz.dentz@gmail.com, luiz.von.dentz@intel.com,
        marcel@holtmann.org, netdev@vger.kernel.org, pabeni@redhat.com,
        syzkaller-bugs@googlegroups.com, yinghsu@chromium.org
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On Fri, 16 Jun 2023 at 17:09, syzbot
<syzbot+b825d87fe2d043e3e652@syzkaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit a2ac591cb4d83e1f2d4b4adb3c14b2c79764650a
> Author: Ruihan Li <lrh2000@pku.edu.cn>
> Date:   Wed May 3 13:39:36 2023 +0000
>
>     Bluetooth: Fix UAF in hci_conn_hash_flush again
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13755717280000
> start commit:   e4cf7c25bae5 Merge tag 'kbuild-fixes-v6.2' of git://git.ke..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=555d27e379d75ff1
> dashboard link: https://syzkaller.appspot.com/bug?extid=b825d87fe2d043e3e652
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10052058480000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1190687c480000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: Bluetooth: Fix UAF in hci_conn_hash_flush again
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Looks reasonable:

#syz fix: Bluetooth: Fix UAF in hci_conn_hash_flush again