engines/e_atalla.c:544: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - 1):unsigned32 by call to `atalla_mod_exp`.
Showing all 11 steps of the trace


engines/e_atalla.c:542:7: Call
540.   	BN_init(&t);
541.   	/* let rr = a1 ^ p1 mod m */
542.   	if (!atalla_mod_exp(rr,a1,p1,m,ctx)) goto end;
             ^
543.   	/* let t = a2 ^ p2 mod m */
544.   	if (!atalla_mod_exp(&t,a2,p2,m,ctx)) goto end;

engines/e_atalla.c:500:2: Call
  498.   	to_return = 1;
  499.   err:
  500.   	BN_CTX_end(ctx);
          ^
  501.   	return to_return;
  502.   	}

crypto/bn/bn_ctx.c:270:1: Parameter `ctx->pool.used`
    268.   	}
    269.   
    270. > void BN_CTX_end(BN_CTX *ctx)
    271.   	{
    272.   	CTXDBG_ENTRY("BN_CTX_end", ctx);

engines/e_atalla.c:544:7: Call
542.   	if (!atalla_mod_exp(rr,a1,p1,m,ctx)) goto end;
543.   	/* let t = a2 ^ p2 mod m */
544.   	if (!atalla_mod_exp(&t,a2,p2,m,ctx)) goto end;
             ^
545.   	/* let rr = rr * t mod m */
546.   	if (!BN_mod_mul(rr,rr,&t,m,ctx)) goto end;

engines/e_atalla.c:433:1: Parameter `ctx->pool.used`
  431.   	}
  432.   
  433. > static int atalla_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
  434.   			const BIGNUM *m, BN_CTX *ctx)
  435.   	{

engines/e_atalla.c:500:2: Call
  498.   	to_return = 1;
  499.   err:
  500.   	BN_CTX_end(ctx);
          ^
  501.   	return to_return;
  502.   	}

crypto/bn/bn_ctx.c:270:1: Parameter `ctx->pool.used`
    268.   	}
    269.   
    270. > void BN_CTX_end(BN_CTX *ctx)
    271.   	{
    272.   	CTXDBG_ENTRY("BN_CTX_end", ctx);

crypto/bn/bn_ctx.c:280:4: Call
    278.   		/* Does this stack frame have anything to release? */
    279.   		if(fp < ctx->used)
    280.   			BN_POOL_release(&ctx->pool, ctx->used - fp);
              ^
    281.   		ctx->used = fp;
    282.   		/* Unjam "too_many" in case "get" had failed */

crypto/bn/bn_ctx.c:438:1: <LHS trace>
436.   	}
437.   
438. > static void BN_POOL_release(BN_POOL *p, unsigned int num)
439.   	{
440.   	unsigned int offset = (p->used - 1) % BN_CTX_POOL_SIZE;

crypto/bn/bn_ctx.c:438:1: Parameter `p->used`
      436.   	}
      437.   
      438. > static void BN_POOL_release(BN_POOL *p, unsigned int num)
      439.   	{
      440.   	unsigned int offset = (p->used - 1) % BN_CTX_POOL_SIZE;

crypto/bn/bn_ctx.c:440:2: Binary operation: ([0, +oo] - 1):unsigned32 by call to `atalla_mod_exp` 
      438.   static void BN_POOL_release(BN_POOL *p, unsigned int num)
      439.   	{
      440.   	unsigned int offset = (p->used - 1) % BN_CTX_POOL_SIZE;
              ^
      441.   	p->used -= num;
      442.   	while(num--)
