panic: trap type 4, code=0, pc=ffffffff8304c972
Starting stack trace...
panic(ffffffff832f4ba6) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff80002a87ce90) at kerntrap+0x28b sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
sys_msgrcv(ffff8000381462b0,ffff80002a87d0c0,ffff80002a87d010) at
 sys_msgrcv+0x3f2
syscall(ffff80002a87d0c0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a87d0c0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9d595239cf0, count: 251
End of stack trace.
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