# DF-5065 baseline run -- 2026-09-26, guest fresh from `vm.sh reset with-src`
# command: vm.sh run_root 'sh /tmp/run.sh'   (ssh session died at the panic;
# the authoritative record is the serial console => panic.txt)
#
# Predicted & observed sequence on the serial console (panic.txt):
#   Device Mapper version 4.16.0 loaded        <- kldload dm
#   dm_target_error: Successfully initialized  <- builtin targets registered
#   dm_target_zero: Successfully initialized
#   [create df5065dev; kldunload dm -> EBUSY veto; remove df5065dev]
#   dm_target_linear: Successfully initialized <- kldload dm_target_linear (dm refs 0->1)
#   Device Mapper unloaded                     <- kldunload dm SUCCEEDED (BUG:
#                                                dm_target_uninit freed linear's
#                                                registered entry; dm.ko text freed)
#   Fatal trap 12: page fault while in kernel mode
#   fault virtual address = 0xffffffff82604950
#   fault code = supervisor read instruction, page not present
#   instruction pointer = 0x8:0xffffffff82604950   <- executing freed dm.ko text
#   current process = 870                          <- the kldunload dm_target_linear
#   Stopped at -0x7d9fb6b0:  (db> prompt; guest down)
#
# Deterministic: first and only attempt, no race, no timing.