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Date:      Tue, 19 Jan 2021 16:32:52 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 252833] panic changing vt font with gfx-enabled EFI loader
Message-ID:  <bug-252833-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D252833

            Bug ID: 252833
           Summary: panic changing vt font with gfx-enabled EFI loader
           Product: Base System
           Version: CURRENT
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: ben@desync.com

After booting with the new gfx EFI loader, changing the vt font causes a pa=
nic:

--- trap 0xc, rip =3D 0xffffffff80b65bfd, rsp =3D 0xfffffe01a1c02560, rbp =
=3D
0xfffffe01a1c02590 ---
free() at free+0x4d/frame 0xfffffe01a1c02590
vt_change_font() at vt_change_font+0x19a/frame 0xfffffe01a1c025e0
vtterm_ioctl() at vtterm_ioctl+0xf30/frame 0xfffffe01a1c02630
termtty_ioctl() at termtty_ioctl+0xc5/frame 0xfffffe01a1c02680
tty_ioctl() at tty_ioctl+0x3b/frame 0xfffffe01a1c026c0

#11 0xffffffff809e5f4a in vt_change_font (vw=3Dvw@entry=3D0xfffff8002888fd8=
0,
vf=3D0xfffff8003a286880)
    at /usr/src/sys/dev/vt/vt_core.c:1901
1901                    vtfont_unref(vw->vw_font);
(kgdb) p vw->vw_font
$6 =3D (struct vt_font *) 0xffffffff81c50400 <vt_font_loader>

#10 0xffffffff809e73c0 in vtfont_unref (vf=3D<optimized out>) at
/usr/src/sys/dev/vt/vt_font.c:135
135                     free(vf, M_VTFONT);

FreeBSD 13.0-ALPHA1 #0 main-c256114-g5290493a200-dirty

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