crypto/ec/ecp_nistz256.c:1379: error: BUFFER_OVERRUN_L3
  Offset: [1, +oo] Size: [0, 8388607] by call to `ecp_nistz256_windowed_mul`.
Showing all 20 steps of the trace


crypto/ec/ecp_nistz256.c:1150:8: Parameter `scalar->top`
1148.   
1149.   /* r = scalar*G + sum(scalars[i]*points[i]) */
1150.   __owur static int ecp_nistz256_points_mul(const EC_GROUP *group,
               ^
1151.                                             EC_POINT *r,
1152.                                             const BIGNUM *scalar,

crypto/ec/ecp_nistz256.c:1379:14: Call
1377.               out = &p.p;
1378.   
1379.           if (!ecp_nistz256_windowed_mul(group, out, scalars, points, num, ctx))
                     ^
1380.               goto err;
1381.   

crypto/ec/ecp_nistz256.c:595:8: Parameter `(*scalar)->top`
  593.   
  594.   /* r = sum(scalar[i]*point[i]) */
  595.   __owur static int ecp_nistz256_windowed_mul(const EC_GROUP *group,
                ^
  596.                                               P256_POINT *r,
  597.                                               const BIGNUM **scalar,

crypto/ec/ecp_nistz256.c:630:14: Call
  628.   
  629.           /* This is an unusual input, we don't guarantee constant-timeness. */
  630.           if ((BN_num_bits(scalar[i]) > 256) || BN_is_negative(scalar[i])) {
                      ^
  631.               BIGNUM *mod;
  632.   

crypto/bn/bn_lib.c:166:9: Call
    164.       bn_check_top(a);
    165.   
    166.       if (BN_is_zero(a))
                   ^
    167.           return 0;
    168.       return ((i * BN_BITS2) + BN_num_bits_word(a->d[i]));

crypto/bn/bn_lib.c:920:1: Parameter `a->top`
      918.   }
      919.   
      920. > int BN_is_zero(const BIGNUM *a)
      921.   {
      922.       return a->top == 0;

crypto/ec/ecp_nistz256.c:635:18: Call
  633.               if ((mod = BN_CTX_get(ctx)) == NULL)
  634.                   goto err;
  635.               if (!BN_nnmod(mod, scalar[i], group->order, ctx)) {
                          ^
  636.                   ECerr(EC_F_ECP_NISTZ256_WINDOWED_MUL, ERR_R_BN_LIB);
  637.                   goto err;

crypto/bn/bn_mod.c:13:1: Parameter `m->top`
    11.   #include "bn_lcl.h"
    12.   
    13. > int BN_nnmod(BIGNUM *r, const BIGNUM *m, const BIGNUM *d, BN_CTX *ctx)
    14.   {
    15.       /*

crypto/bn/bn_mod.c:20:11: Call
    18.        */
    19.   
    20.       if (!(BN_mod(r, m, d, ctx)))
                    ^
    21.           return 0;
    22.       if (!r->neg)

crypto/bn/bn_div.c:140:1: Parameter `num->top`
      138.    * If 'dv' or 'rm' is NULL, the respective value is not returned.
      139.    */
      140. > int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor,
      141.              BN_CTX *ctx)
      142.   {

crypto/bn/bn_div.c:210:11: Call
      208.       sdiv->neg = 0;
      209.       norm_shift += BN_BITS2;
      210.       if (!(BN_lshift(snum, num, norm_shift)))
                       ^
      211.           goto err;
      212.       snum->neg = 0;

crypto/bn/bn_shift.c:81:1: <Offset trace>
79.   }
80.   
81. > int BN_lshift(BIGNUM *r, const BIGNUM *a, int n)
82.   {
83.       int i, nw, lb, rb;

crypto/bn/bn_shift.c:81:1: Parameter `n`
        79.   }
        80.   
        81. > int BN_lshift(BIGNUM *r, const BIGNUM *a, int n)
        82.   {
        83.       int i, nw, lb, rb;

crypto/bn/bn_shift.c:95:5: Assignment
        93.       }
        94.   
        95.       nw = n / BN_BITS2;
                  ^
        96.       if (bn_wexpand(r, a->top + nw + 1) == NULL)
        97.           return (0);

crypto/bn/bn_shift.c:81:1: <Length trace>
79.   }
80.   
81. > int BN_lshift(BIGNUM *r, const BIGNUM *a, int n)
82.   {
83.       int i, nw, lb, rb;

crypto/bn/bn_shift.c:81:1: Parameter `*r->d`
        79.   }
        80.   
        81. > int BN_lshift(BIGNUM *r, const BIGNUM *a, int n)
        82.   {
        83.       int i, nw, lb, rb;

crypto/bn/bn_shift.c:96:9: Call
        94.   
        95.       nw = n / BN_BITS2;
        96.       if (bn_wexpand(r, a->top + nw + 1) == NULL)
                      ^
        97.           return (0);
        98.       r->neg = a->neg;

crypto/bn/bn_lib.c:1016:1: Parameter `*a->d`
          1014.   }
          1015.   
          1016. > BIGNUM *bn_wexpand(BIGNUM *a, int words)
          1017.   {
          1018.       return (words <= a->dmax) ? a : bn_expand2(a, words);

crypto/bn/bn_shift.c:102:5: Assignment
        100.       rb = BN_BITS2 - lb;
        101.       f = a->d;
        102.       t = r->d;
                   ^
        103.       t[a->top + nw] = 0;
        104.       if (lb == 0)

crypto/bn/bn_shift.c:110:13: Array access: Offset: [1, +oo] Size: [0, 8388607] by call to `ecp_nistz256_windowed_mul` 
        108.           for (i = a->top - 1; i >= 0; i--) {
        109.               l = f[i];
        110.               t[nw + i + 1] |= (l >> rb) & BN_MASK2;
                           ^
        111.               t[nw + i] = (l << lb) & BN_MASK2;
        112.           }
