Re: WARNING: refcount bug in l2cap_chan_put

From: Dmitry Vyukov
Date: Wed Nov 11 2020 - 08:26:56 EST


On Sun, Sep 6, 2020 at 3:07 AM syzbot
<syzbot+198362c76088d1515529@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit b83764f9220a4a14525657466f299850bbc98de9
> Author: Miao-chen Chou <mcchou@xxxxxxxxxxxx>
> Date: Tue Jun 30 03:15:00 2020 +0000
>
> Bluetooth: Fix kernel oops triggered by hci_adv_monitors_clear()
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11aaff5d900000
> start commit: fffe3ae0 Merge tag 'for-linus-hmm' of git://git.kernel.org..
> git tree: upstream
> kernel config: https://syzkaller.appspot.com/x/.config?x=18bb86f2e4ebfda2
> dashboard link: https://syzkaller.appspot.com/bug?extid=198362c76088d1515529
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=152a482c900000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=109b781a900000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: Bluetooth: Fix kernel oops triggered by hci_adv_monitors_clear()
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

#syz fix: Bluetooth: Fix kernel oops triggered by hci_adv_monitors_clear()