engines/ccgost/gost_sign.c:174: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - 1):unsigned64 by call to `BN_mod_exp`.
Showing all 10 steps of the trace


engines/ccgost/gost_sign.c:173:2: Call
171.   	BN_mod_mul(z1,sig->s,v,dsa->q,ctx);
172.   	BN_sub(tmp,dsa->q,sig->r);
173.   	BN_mod_mul(z2,tmp,v,dsa->p,ctx);
        ^
174.   	BN_mod_exp(tmp,dsa->g,z1,dsa->p,ctx);
175.   	BN_mod_exp(tmp2,dsa->pub_key,z2,dsa->p,ctx);

crypto/bn/bn_mod.c:178:1: Parameter `r->top`
  176.   
  177.   /* slow but works */
  178. > int BN_mod_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
  179.   	BN_CTX *ctx)
  180.   	{

engines/ccgost/gost_sign.c:174:2: Call
172.   	BN_sub(tmp,dsa->q,sig->r);
173.   	BN_mod_mul(z2,tmp,v,dsa->p,ctx);
174.   	BN_mod_exp(tmp,dsa->g,z1,dsa->p,ctx);
        ^
175.   	BN_mod_exp(tmp2,dsa->pub_key,z2,dsa->p,ctx);
176.   	BN_mod_mul(tmp3,tmp,tmp2,dsa->p,ctx);

crypto/bn/bn_exp.c:163:1: Parameter `p->top`
  161.   
  162.   
  163. > int BN_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m,
  164.   	       BN_CTX *ctx)
  165.   	{

crypto/bn/bn_exp.c:219:8: Call
  217.   			{
  218.   			BN_ULONG A = a->d[0];
  219.   			ret=BN_mod_exp_mont_word(r,A,p,m,ctx,NULL);
                ^
  220.   			}
  221.   		else

crypto/bn/bn_exp.c:727:1: Parameter `p->top`
    725.   	}
    726.   
    727. > int BN_mod_exp_mont_word(BIGNUM *rr, BN_ULONG a, const BIGNUM *p,
    728.                            const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont)
    729.   	{

crypto/bn/bn_exp.c:769:9: Call
    767.   		a %= m->d[0]; /* make sure that 'a' is reduced */
    768.   
    769.   	bits = BN_num_bits(p);
                   ^
    770.   	if (bits == 0)
    771.   		{

crypto/bn/bn_lib.c:248:1: <LHS trace>
246.   	}
247.   
248. > int BN_num_bits(const BIGNUM *a)
249.   	{
250.   	int i = a->top - 1;

crypto/bn/bn_lib.c:248:1: Parameter `a->top`
      246.   	}
      247.   
      248. > int BN_num_bits(const BIGNUM *a)
      249.   	{
      250.   	int i = a->top - 1;

crypto/bn/bn_lib.c:250:2: Binary operation: ([0, +oo] - 1):unsigned64 by call to `BN_mod_exp` 
      248.   int BN_num_bits(const BIGNUM *a)
      249.   	{
      250.   	int i = a->top - 1;
              ^
      251.   	bn_check_top(a);
      252.   
