[Bug 283341] In version FreeBSD12.2 to FreeBSD 14.2 (include) bhyve host don't boot guest FreeBSD any version on BSD partition

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=283341

            Bug ID: 283341
           Summary: In version FreeBSD12.2 to FreeBSD 14.2 (include) bhyve
                    host don't boot guest FreeBSD any version on BSD
                    partition
           Product: Base System
           Version: Unspecified
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: dym@afalina.od.ua

In version FreeBSD12.2 to FreeBSD 14.2 (include) bhyve host don't boot guest
FreeBSD any version on BSD partition.

# uname -a
FreeBSD HOST 14.2-RELEASE FreeBSD 14.2-RELEASE c8918d6c7 HOST amd64

FreeBSD guest no boot if partitioning BSD-label.

This has been going on since version FreeBSD 12.2 and to this moment,
see report https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254813

Reproduce:
Fresh install FreeBSD 14.2, install vm-bhyve.
Install into bhyve new FreeBSD 14.2 (in sample, it doesn't really depend on
whether it's line 13, 14 or 15) guest.
===============================================================================
# cat testboot.conf
uuid="c3b3fb80-bab9-11ef-a22f-ac1f6bf2c45c"

loader="bhyveload"

cpu=8
memory=16G

#disk0_type="ahci-hd"
#disk0_type="virtio-blk"
disk0_type="nvme"
disk0_name="system.img"
---------------------------------
# vm start testboot
Starting FreeBSD14.2
  * found guest in /VM/test
  * booting...
===============================================================================
After installing system in partition "BSD label":

# vm console test
...
nvme0: temperature threshold not supported
nvme0: SET_FEATURES (09) sqid:0 cid:9 nsid:0 cdw10:00000008 cdw11:00000000
nvme0: FEATURE NOT CHANGEABLE (01/0e) crd:0 m:0 dnr:0 p:1 sqid:0 cid:9 cdw0:0
nda0 at nvme0 bus 0 scbus1 target 0 lun 1
nda0: <bhyve-NVMe 1.0 NVME-4-0>
nda0: Serial Number NVME-4-0
nda0: nvme version 1.4
nda0: 40960MB (83886080 512 byte sectors)
cd0 at ahcich0 bus 0 scbus0 target 0 lun 0
cd0: <BHYVE BHYVE DVD-ROM 001> Removable CD-ROM SCSI device
cd0: Serial Number BHYVE-0FEB-8A5B-3E90
cd0: 600.000MB/s transfers (SATA 3.x, UDMA6, ATAPI 12bytes, PIO 8192bytes)
cd0: 1249MB (639668 2048 byte sectors)

Loader variables:

Manual root filesystem specification:
  <fstype>:<device> [options]
      Mount <device> using filesystem <fstype>
      and with the specified (optional) option list.

    eg. ufs:/dev/da0s1a
        zfs:zroot/ROOT/default
        cd9660:/dev/cd0 ro
          (which is equivalent to: mount -t cd9660 -o ro /dev/cd0 /)

  ?               List valid disk boot devices
  .               Yield 1 second (for background tasks)
  <empty line>    Abort manual input

mountroot> ?

List of GEOM managed disk devices:
  iso9660/14_2_RELEASE_AMD64_CD cd0 diskid/DISK-NVME-4-0a
ufsid/675e8fff44f37a2ea diskid/DISK-NVME-4-0 ufsid/675e8fff44f37a2e nda0a nda0
---------------------------------
If I press ENTER result:

panic: mountroot: unable to (re-)mount root.
cpuid = 0
time = 9
KDB: stack backtrace:
#0 0xffffffff80b8b89d at kdb_backtrace+0x5d
#1 0xffffffff80b3dc01 at vpanic+0x131
#2 0xffffffff80b3dac3 at panic+0x43
#3 0xffffffff80c2152c at vfs_mountroot+0x1cac
#4 0xffffffff80ac6f83 at start_init+0x23
#5 0xffffffff80af760f at fork_exit+0x7f
#6 0xffffffff80ffd3fe at fork_trampoline+0xe
Uptime: 9s
Automatic reboot in 15 seconds - press a key on the console to abort
---------------------------------
If I write ufs:/dev/nda0a after prompt system normal loading.
---------------------------------
Guest system:
# uname -a
FreeBSD test 14.2-RELEASE FreeBSD 14.2-RELEASE releng/14.2-n269506-c8918d6c7412
GENERIC amd64
===============================================================================

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