crypto/ec/ec2_smpl.c:768: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - 1):unsigned32 by call to `BN_CTX_end`.
Showing all 23 steps of the trace


crypto/ec/ec2_smpl.c:676:1: Parameter `ctx->pool.used`
674.    * Uses algorithm A.10.2 of IEEE P1363.
675.    */
676. > int ec_GF2m_simple_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, const EC_POINT *b, BN_CTX *ctx)
677.   	{
678.   	BN_CTX *new_ctx = NULL;

crypto/ec/ec2_smpl.c:702:7: Call
700.   
701.   	BN_CTX_start(ctx);
702.   	x0 = BN_CTX_get(ctx);
             ^
703.   	y0 = BN_CTX_get(ctx);
704.   	x1 = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:288:1: Parameter `ctx->pool.used`
  286.   	}
  287.   
  288. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
  289.   	{
  290.   	BIGNUM *ret;

crypto/ec/ec2_smpl.c:703:7: Call
701.   	BN_CTX_start(ctx);
702.   	x0 = BN_CTX_get(ctx);
703.   	y0 = BN_CTX_get(ctx);
             ^
704.   	x1 = BN_CTX_get(ctx);
705.   	y1 = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:288:1: Parameter `ctx->pool.used`
  286.   	}
  287.   
  288. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
  289.   	{
  290.   	BIGNUM *ret;

crypto/ec/ec2_smpl.c:704:7: Call
702.   	x0 = BN_CTX_get(ctx);
703.   	y0 = BN_CTX_get(ctx);
704.   	x1 = BN_CTX_get(ctx);
             ^
705.   	y1 = BN_CTX_get(ctx);
706.   	x2 = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:288:1: Parameter `ctx->pool.used`
  286.   	}
  287.   
  288. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
  289.   	{
  290.   	BIGNUM *ret;

crypto/ec/ec2_smpl.c:705:7: Call
703.   	y0 = BN_CTX_get(ctx);
704.   	x1 = BN_CTX_get(ctx);
705.   	y1 = BN_CTX_get(ctx);
             ^
706.   	x2 = BN_CTX_get(ctx);
707.   	y2 = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:288:1: Parameter `ctx->pool.used`
  286.   	}
  287.   
  288. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
  289.   	{
  290.   	BIGNUM *ret;

crypto/ec/ec2_smpl.c:706:7: Call
704.   	x1 = BN_CTX_get(ctx);
705.   	y1 = BN_CTX_get(ctx);
706.   	x2 = BN_CTX_get(ctx);
             ^
707.   	y2 = BN_CTX_get(ctx);
708.   	s = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:288:1: Parameter `ctx->pool.used`
  286.   	}
  287.   
  288. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
  289.   	{
  290.   	BIGNUM *ret;

crypto/ec/ec2_smpl.c:707:7: Call
705.   	y1 = BN_CTX_get(ctx);
706.   	x2 = BN_CTX_get(ctx);
707.   	y2 = BN_CTX_get(ctx);
             ^
708.   	s = BN_CTX_get(ctx);
709.   	t = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:288:1: Parameter `ctx->pool.used`
  286.   	}
  287.   
  288. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
  289.   	{
  290.   	BIGNUM *ret;

crypto/ec/ec2_smpl.c:708:6: Call
706.   	x2 = BN_CTX_get(ctx);
707.   	y2 = BN_CTX_get(ctx);
708.   	s = BN_CTX_get(ctx);
            ^
709.   	t = BN_CTX_get(ctx);
710.   	if (t == NULL) goto err;

crypto/bn/bn_ctx.c:288:1: Parameter `ctx->pool.used`
  286.   	}
  287.   
  288. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
  289.   	{
  290.   	BIGNUM *ret;

crypto/ec/ec2_smpl.c:709:6: Call
707.   	y2 = BN_CTX_get(ctx);
708.   	s = BN_CTX_get(ctx);
709.   	t = BN_CTX_get(ctx);
            ^
710.   	if (t == NULL) goto err;
711.   

crypto/bn/bn_ctx.c:288:1: Parameter `ctx->pool.used`
  286.   	}
  287.   
  288. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
  289.   	{
  290.   	BIGNUM *ret;

crypto/ec/ec2_smpl.c:768:2: Call
766.   
767.    err:
768.   	BN_CTX_end(ctx);
        ^
769.   	if (new_ctx != NULL)
770.   		BN_CTX_free(new_ctx);

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 `BN_CTX_end` 
    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--)
