test/bntest.c:288: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, +oo] by call to `BN_div_recp`.
Showing all 19 steps of the trace


test/bntest.c:287:9: Call
285.           BN_set_negative(a, rand_neg());
286.           BN_set_negative(b, rand_neg());
287.           BN_RECP_CTX_set(recp, b, ctx);
               ^
288.           BN_div_recp(d, c, a, recp, ctx);
289.           BN_mul(e, d, b, ctx);

crypto/bn/bn_recp.c:45:1: Parameter `*recp->Nr.d`
  43.   }
  44.   
  45. > int BN_RECP_CTX_set(BN_RECP_CTX *recp, const BIGNUM *d, BN_CTX *ctx)
  46.   {
  47.       if (!BN_copy(&(recp->N), d))

test/bntest.c:288:9: Call
286.           BN_set_negative(b, rand_neg());
287.           BN_RECP_CTX_set(recp, b, ctx);
288.           BN_div_recp(d, c, a, recp, ctx);
               ^
289.           BN_mul(e, d, b, ctx);
290.           BN_add(d, e, c);

crypto/bn/bn_recp.c:91:29: Call
  89.   
  90.       BN_CTX_start(ctx);
  91.       d = (dv != NULL) ? dv : BN_CTX_get(ctx);
                                    ^
  92.       r = (rem != NULL) ? rem : BN_CTX_get(ctx);
  93.       a = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:229:5: Call
    227.       }
    228.       /* OK, make sure the returned bignum is "zero" */
    229.       BN_zero(ret);
               ^
    230.       ctx->used++;
    231.       CTXDBG_RET(ctx, ret);

crypto/bn/bn_lib.c:366:15: Assignment
      364.       a->neg = 0;
      365.       a->d[0] = w;
      366.       a->top = (w ? 1 : 0);
                           ^
      367.       a->flags &= ~BN_FLG_FIXED_TOP;
      368.       bn_check_top(a);

crypto/bn/bn_lib.c:366:5: Assignment
      364.       a->neg = 0;
      365.       a->d[0] = w;
      366.       a->top = (w ? 1 : 0);
                 ^
      367.       a->flags &= ~BN_FLG_FIXED_TOP;
      368.       bn_check_top(a);

crypto/bn/bn_recp.c:132:10: Call
  130.        *    = |m/N|
  131.        */
  132.       if (!BN_rshift(a, m, recp->num_bits))
                  ^
  133.           goto err;
  134.       if (!BN_mul(b, a, &(recp->Nr), ctx))

crypto/bn/bn_shift.c:153:1: Parameter `*r->d`
    151.   }
    152.   
    153. > int BN_rshift(BIGNUM *r, const BIGNUM *a, int n)
    154.   {
    155.       int i, j, nw, lb, rb;

crypto/bn/bn_shift.c:176:13: Call
    174.       i = (BN_num_bits(a) - n + (BN_BITS2 - 1)) / BN_BITS2;
    175.       if (r != a) {
    176.           if (bn_wexpand(r, i) == NULL)
                       ^
    177.               return 0;
    178.           r->neg = a->neg;

crypto/bn/bn_lib.c:939:1: Parameter `*a->d`
      937.   }
      938.   
      939. > BIGNUM *bn_wexpand(BIGNUM *a, int words)
      940.   {
      941.       return (words <= a->dmax) ? a : bn_expand2(a, words);

crypto/bn/bn_lib.c:941:37: Call
      939.   BIGNUM *bn_wexpand(BIGNUM *a, int words)
      940.   {
      941.       return (words <= a->dmax) ? a : bn_expand2(a, words);
                                                 ^
      942.   }
      943.   

crypto/bn/bn_lib.c:245:1: Parameter `*b->d`
        243.    */
        244.   
        245. > BIGNUM *bn_expand2(BIGNUM *b, int words)
        246.   {
        247.       if (words > b->dmax) {

crypto/bn/bn_lib.c:248:23: Call
        246.   {
        247.       if (words > b->dmax) {
        248.           BN_ULONG *a = bn_expand_internal(b, words);
                                     ^
        249.           if (!a)
        250.               return NULL;

crypto/bn/bn_lib.c:209:1: <Offset trace>
207.   /* This is used by bn_expand2() */
208.   /* The caller MUST check that words > b->dmax before calling this */
209. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
210.   {
211.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:209:1: Parameter `b->top`
          207.   /* This is used by bn_expand2() */
          208.   /* The caller MUST check that words > b->dmax before calling this */
          209. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
          210.   {
          211.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:209:1: <Length trace>
207.   /* This is used by bn_expand2() */
208.   /* The caller MUST check that words > b->dmax before calling this */
209. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
210.   {
211.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:209:1: Parameter `*b->d`
          207.   /* This is used by bn_expand2() */
          208.   /* The caller MUST check that words > b->dmax before calling this */
          209. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
          210.   {
          211.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:232:9: Array access: Offset added: [8, +oo] Size: [0, +oo] by call to `BN_div_recp` 
          230.       assert(b->top <= words);
          231.       if (b->top > 0)
          232.           memcpy(a, b->d, sizeof(*a) * b->top);
                         ^
          233.   
          234.       return a;
