Setting for displaying utf8 characters on all vt consoles results in panic on 14-CURRENT and 13.0-ALPHA3

[Yasuhiro Kimura]

From: Yasuhiro Kimura <yasu at utahime.org>
Subject: Setting for displaying utf8 characters on all vt consoles results in panic on 14-CURRENT and 13.0-ALPHA3
Date: Mon, 01 Feb 2021 11:41:35 +0900 (JST)

> To display utf8 characters on all vt console I did following settings.
> 
> 1. Download GNU Unifont BDF file
>    (http://unifoundry.com/pub/unifont/unifont-13.0.05/font-builds/unifont-13.0.05.bdf.gz)
> 2. gunzip unifont-13.0.05.bdf.gz
> 3. vtfontcvt unifont-13.0.05.bdf unifont.fnt
> 4. cp unifont.fnt /usr/share/vt/fonts
> 5. Add 'allscreens_flags="-f 8x16 unifont.fnt"' to /etc/rc.conf
> 6. Add 'hw.vga.textmode=0' to /boot/loader.conf.local
> 7. shutdown -r now
> 
> On 12.2-RELEASE and 11.4-RELEASE it works as is expected. But on
> 14-CURRENT(man) and 13.0-ALPHA3(stable/13) it result in kernel panic.
> 
> Screen shot of 14-CURRENT.
> https://www.utahime.org/FreeBSD/panic.20210201.14-CURRENT.png
> 
> 14-CURRENT(main):
> yasu at rolling-vm-freebsd1[1006]% uname -a
> FreeBSD rolling-vm-freebsd1.home.utahime.org 14.0-CURRENT FreeBSD 14.0-CURRENT #0 main-n244517-f17fc5439f5: Mon Feb  1 10:55:51 JST 2021     rootz at rolling-vm-freebsd1.home.utahime.org:/usr0/freebsd/src/obj/usr0/freebsd/src/git/amd64.amd64/sys/GENERIC  amd64
> 
> 13.0-ALPHA3(stable/13):
> yasu at rolling-vm-freebsd5[1005]% uname -a
> FreeBSD rolling-vm-freebsd5.home.utahime.org 13.0-ALPHA3 FreeBSD 13.0-ALPHA3 #0 stable/13-c256214-g40cb0344eb2: Mon Feb  1 11:30:28 JST 2021     rootz at rolling-vm-freebsd5.home.utahime.org:/usr0/freebsd/src/obj/usr0/freebsd/src/git/amd64.amd64/sys/GENERIC  amd64

I submitted this problem to Bugzilla.

Bug 253147 - Setting for displaying utf8 characters on all vt consoles
results in panic on 14-CURRENT and 13.0-ALPHA3
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253147

---
Yasuhiro Kimura