Re: KASAN: use-after-free Write in hci_sock_release

[Dmitry Vyukov]

On Fri, Mar 22, 2019 at 1:04 PM syzbot
<syzbot+b364ed862aa07c74bc62@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> syzbot has bisected this bug to:
>
> commit c470abd4fde40ea6a0846a2beab642a578c0b8cd
> Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
> Date:   Sun Feb 19 22:34:00 2017 +0000
>
>      Linux 4.10
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1664c6df200000
> start commit:   c470abd4 Linux 4.10
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=7308e68273924137
> dashboard link: https://syzkaller.appspot.com/bug?extid=b364ed862aa07c74bc62
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=152532bb400000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13f73320c00000
>
> Reported-by: syzbot+b364ed862aa07c74bc62@xxxxxxxxxxxxxxxxxxxxxxxxx
> Fixes: c470abd4fde4 ("Linux 4.10")
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

The same story of HCI being broken before v4.10, so this is bisected
to the release.