On Wed, Jul 29, 2020 at 01:59:05AM -0700, syzbot wrote:> syzbot has bisected this issue to:
>
> commit 408624af4c89989117bb2c6517bd50b7708a2fcd
> Author: Stefano Garzarella <sgarzare at redhat.com>
> Date: Tue Dec 10 10:43:06 2019 +0000
>
> vsock: use local transport when it is loaded
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17e6489b100000
> start commit: 92ed3019 Linux 5.8-rc7
> git tree: upstream
> final oops: https://syzkaller.appspot.com/x/report.txt?x=1416489b100000
> console output: https://syzkaller.appspot.com/x/log.txt?x=1016489b100000
> kernel config: https://syzkaller.appspot.com/x/.config?x=84f076779e989e69
> dashboard link:
https://syzkaller.appspot.com/bug?extid=a61bac2fcc1a7c6623fe
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15930b64900000
>
> Reported-by: syzbot+a61bac2fcc1a7c6623fe at syzkaller.appspotmail.com
> Fixes: 408624af4c89 ("vsock: use local transport when it is
loaded")
>
> For information about bisection process see:
https://goo.gl/tpsmEJ#bisection
>
I'll take a look.
At first glance it seems strange, because if sk_state is TCP_ESTABLISHED,
the transport shouldn't be NULL, that's why we didn't put the check.
Stefano
