=== DF-2728 decisive run (serial console, vm.sh log) ===
--- control (mode 3) ---
df2728: mode3(control): plain remote schedule td2=0xfffff800905fe180
df2728: mode3: ok, no panic (control)
--- first mode-1 (idle target cpu: no frame-preempt; stock-path completion) ---
df2728: mode1(DF-2728): lwkt_schedule(td1=0xfffff800905ff500) cpu0 -> cpu1, td_preemptable=lwkt_preempt
df2728: mode1: returned WITHOUT panic (non-INVariANTS semantics: designed preempt)
df2728: mode1(DF-2728): lwkt_schedule(td1=0xfffff800905ff500) cpu0 -> cpu1, td_preemptable=lwkt_preempt
dpanicf: a2sser7tion2 "gd->gd_proc8essing_ipiq == 0" failed i:n lwkt _preempt mat /usr/sroc/sys/kerdn/lwket_threa1d.c::10 26
--- decisive mode-1 (user thread pinned on cpu1) ---
43:df2728: mode1(DF-2728): lwkt_schedule(td1=0xfffff800905ff500) cpu0 -> cpu1, td_preemptable=lwkt_preempt
45:df2728: mode1(DF-2728): lwkt_schedule(td1=0xfffff800905ff500) cpu0 -> cpu1, td_preemptable=lwkt_preempt
53:lwkt_process_ipiq_core.isra.2+0xff 0xffffffff80676d3f 
54:lwkt_process_ipiq_frame() at lwkt_process_ipiq_frame+0x10d 0xffffffff80677cad