Illegal memory access when executing cufftExecD2Z

Question

Here is some part of my code

int N = 128; int M = 128;
int Np = 916;
int Np = 916;
int n = (2*Np-1);       int m = (2*Mp-1);
int nm_FFT = (n*m)/2 + 1;

dim3 T