panic: trap type 4, code=0, pc=ffffffff81a11b67
Starting stack trace...
panic(ffffffff832ef7ac) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff80003ca4f050) at kerntrap+0x28b sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyout() at copyout+0x57
syscall(ffff80003ca4f290) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003ca4f290) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa5bbdf48d80, count: 251
End of stack trace.