Can someone please give some pointers. 
Adding some more details, the module name is "npdereference.ko" and the function
where the crash is done looks like below. So I expect "null_deref_module_init" 
to be present instead of "_MODULE_INIT_TEXT_START_npdereference" :
static int __init null_deref_module_init(void) {
    // Pointer to an integer, initialized to NULL
    int *null_pointer = NULL;
    printk(KERN_INFO "Null dereference module loaded\n");
    // Dereferencing the NULL pointer to trigger a crash
    printk(KERN_INFO "Triggering null pointer dereference...\n");
    *null_pointer = 1; // This line will cause a null pointer dereference
    return 0; // This will never be reached
}