assert "tname->un_flags & UNVEIL_USERSET" failed in kern_serialport: VM disconnected.

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: ad597a5f Use limits.h instead of sys/limits.h for portabil..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=17e4e21f200000
kernel config: https://syzkaller.appspot.com/x/.config?x=fa145722143cbd64
dashboard link: https://syzkaller.appspot.com/bug?extid=7daad3f1a9755a5388ba

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+7daad3...@syzkaller.appspotmail.com

panic: kernel diagnostic assertion "tname->un_flags & UNVEIL_USERSET"
failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_serialport:
VM disconnected.


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[Anton Lindqvist]

#syz dup: assert "tname->un_flags & UNVEIL_USERSET" failed in kern_unveil.c