Need help resolving this ptr-ptr problem I am facing

#include <stdio.h>
#include <string.h>
#include <conio.h>

typedef struct 
{
    char name[10];
    int age;
}detailsStruct;

static int fnProcess(detailsStruct** detailsPtrPtr)
{
    detailsStruct detailsStr;

    strcpy_s(detailsStr.name,"Arjun");
    detailsStr.age = 25;

    *detailsPtrPtr = &detailsStr; 


    return 0;
}

int main()
{
    int rv = 0;
    detailsStruct* detailsPtr;

    rv= fnProcess(&detailsPtr);

    printf("\n Name %s", detailsPtr->name);
    printf("\n Age %d", detailsPtr->age);
    _getch();
    return rv;
}

Name Arju£²▲
Age 221459990