panic: kernel diagnostic serialport: VM disconnected.

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: 6a51f920 Fix authentication failures when "AuthenticationM..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1208d33b200000
kernel config: https://syzkaller.appspot.com/x/.config?x=fa145722143cbd64
dashboard link: https://syzkaller.appspot.com/bug?extid=38f903c5aa40a7940403

Unfortunately, I don't have any reproducer for this crash yet.

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+38f903...@syzkaller.appspotmail.com

panic: kernel diagnostic serialport: VM disconnected.


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[Dmitry Vyukov]

On Tue, Mar 26, 2019 at 9:42 AM syzbot
<syzbot+38f903...@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: 6a51f920 Fix authentication failures when "AuthenticationM..
> git tree: openbsd
> console output: https://syzkaller.appspot.com/x/log.txt?x=1208d33b200000
> kernel config: https://syzkaller.appspot.com/x/.config?x=fa145722143cbd64
> dashboard link: https://syzkaller.appspot.com/bug?extid=38f903c5aa40a7940403
>
> Unfortunately, I don't have any reproducer for this crash yet.
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+38f903...@syzkaller.appspotmail.com
>
> panic: kernel diagnostic serialport: VM disconnected.

This is either a GCE bug, or a bug in a way we detect shut down
preemptive VMs. Hard to say which one since these happen very
infrequently.
If these don't appear frequently enough to cause pain for humans, I
think we should just close them.

#syz invalid