From 81c4166aaa6987f9eab29b912824ca910bba379a Mon Sep 17 00:00:00 2001 From: emaste Date: Mon, 20 Oct 2014 03:17:48 +0000 Subject: [PATCH] MFS10 r273296 (r273219 in HEAD): Do nothing in vt_upgrade if there is no vt driver Previously, if no drivers attached at boot we would panic with "vtbuf_fill_locked begin.tp_row 0 must be < screen height 0". PR: 192248 Approved by: re git-svn-id: svn://svn.freebsd.org/base/releng/10.1@273300 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f --- sys/dev/vt/vt_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/dev/vt/vt_core.c b/sys/dev/vt/vt_core.c index 67d43489e..0ad06dd63 100644 --- a/sys/dev/vt/vt_core.c +++ b/sys/dev/vt/vt_core.c @@ -2491,6 +2491,8 @@ vt_upgrade(struct vt_device *vd) if (!vty_enabled(VTY_VT)) return; + if (main_vd->vd_driver == NULL) + return; for (i = 0; i < VT_MAXWINDOWS; i++) { vw = vd->vd_windows[i]; -- 2.42.0