panic: trap type 4, code=0, pc=ffffffff818520fb
Starting stack trace...
panic(ffffffff833de2ee) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80002a3c59a0) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
end trace frame: 0x0, count: 254
End of stack trace.