dynamic array getting "error code unspecified launch failure"

[herdiandkun]

Hi, i want to use dynamic array in my kernel with c variable, but i always getting this error “error code unspecified launch failure” when i use thread more than 1 threa. and if i comment this code c[letak] = 5; i did’t get this error. how to solve it?

this my kernel

__global__ void FillMatrix(char **sequence,int *s_length, int n, int *score)
{
  int b = threadIdx.x + blockIdx.x*blockDim.x;
  int a = threadIdx.y + blockIdx.y*blockDim.y;
  const int rows = s_length[a],cols = s_length[b];
      char *X = sequence[a];
      char *Y = sequence[b];
      
      const int jum = (cols + 1)*(rows + 1);

      size_t sizeArr = jum;
      int *c;
      c = (int*)malloc(sizeArr);
      memset(c,0,sizeArr);
      printf("Thread %d got C pointer: %p\n", threadIdx.x, c);
      score[(a*(n)) + b] = 0;
      if(b < n){
        printf("index ke %d - %d = %d --- %d - %d \n", a,b, jum, cols, rows);
        int letak,kiri,atas,miring, n_letak, n_atas, n_kiri,x=0,y=0,i;
        for(i = 0; i < jum;i++)
        {   
          if(i > (cols + 1 )  && (i % (cols+1) != 0))
          {
              y = (i/(cols + 1) - 1);
              x = (i-1) % (cols + 1);
          
              letak = i ;
              kiri  = letak - 1;
              atas  = (letak - cols) - 1 ;
              miring = atas - 1;
              int scoring = scoringsMatrix[X[y] - 'A'][Y[x] - 'A'];    
              n_letak = c[miring] + scoring;
              n_kiri = c[kiri] + GAP;
              n_atas = c[atas] + GAP;
              c[letak] = 5;
          }
        } 
        printf("score %d - %d = %d \n", a,b,score[(a*(n)) + b]);
        free(c);
      }
 }