crypto/rsa/rsa_sp800_56b_check.c:186: error: INTEGER_OVERFLOW_L2
  ([0, 7+max(0, `ctx->stack.depth`)] - 1):unsigned32 by call to `BN_CTX_end`.
Showing all 9 steps of the trace


crypto/rsa/rsa_sp800_56b_check.c:157:1: Parameter `ctx->stack.depth`
155.    *     (Step 6b) 1 = (d*e) mod LCM(p–1, q–1)
156.    */
157. > int rsa_check_private_exponent(const RSA *rsa, int nbits, BN_CTX *ctx)
158.   {
159.       int ret;

crypto/rsa/rsa_sp800_56b_check.c:166:5: Call
164.           return 0;
165.   
166.       BN_CTX_start(ctx);
           ^
167.       r = BN_CTX_get(ctx);
168.       p1 = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:171:1: Parameter `ctx->stack.depth`
  169.   }
  170.   
  171. > void BN_CTX_start(BN_CTX *ctx)
  172.   {
  173.       CTXDBG("ENTER BN_CTX_start()", ctx);

crypto/rsa/rsa_sp800_56b_check.c:186:5: Call
184.       BN_clear(lcm);
185.       BN_clear(gcd);
186.       BN_CTX_end(ctx);
           ^
187.       return ret;
188.   }

crypto/bn/bn_ctx.c:185:1: Parameter `ctx->stack.depth`
  183.   }
  184.   
  185. > void BN_CTX_end(BN_CTX *ctx)
  186.   {
  187.       if (ctx == NULL)

crypto/bn/bn_ctx.c:193:27: Call
  191.           ctx->err_stack--;
  192.       else {
  193.           unsigned int fp = BN_STACK_pop(&ctx->stack);
                                   ^
  194.           /* Does this stack frame have anything to release? */
  195.           if (fp < ctx->used)

crypto/bn/bn_ctx.c:268:1: <LHS trace>
266.   }
267.   
268. > static unsigned int BN_STACK_pop(BN_STACK *st)
269.   {
270.       return st->indexes[--(st->depth)];

crypto/bn/bn_ctx.c:268:1: Parameter `st->depth`
    266.   }
    267.   
    268. > static unsigned int BN_STACK_pop(BN_STACK *st)
    269.   {
    270.       return st->indexes[--(st->depth)];

crypto/bn/bn_ctx.c:270:12: Binary operation: ([0, 7+max(0, ctx->stack.depth)] - 1):unsigned32 by call to `BN_CTX_end` 
    268.   static unsigned int BN_STACK_pop(BN_STACK *st)
    269.   {
    270.       return st->indexes[--(st->depth)];
                      ^
    271.   }
    272.   

static unsigned int BN_STACK_pop(BN_STACK *st)
{
    return st->indexes[--(st->depth)];
}
['int rsa_check_private_exponent(const RSA *rsa, int nbits, BN_CTX *ctx)\n{\n    int ret;\n    BIGNUM *r, *p1, *q1, *lcm, *p1q1, *gcd;\n    if (BN_num_bits(rsa->d) <= (nbits >> 1))\n        return 0;\n    BN_CTX_start(ctx);\n    r = BN_CTX_get(ctx);\n    p1 = BN_CTX_get(ctx);\n    q1 = BN_CTX_get(ctx);\n    lcm = BN_CTX_get(ctx);\n    p1q1 = BN_CTX_get(ctx);\n    gcd = BN_CTX_get(ctx);\n    ret = (gcd != NULL\n          && (rsa_get_lcm(ctx, rsa->p, rsa->q, lcm, gcd, p1, q1, p1q1) == 1)\n          && (BN_cmp(rsa->d, lcm) < 0)\n          && BN_mod_mul(r, rsa->e, rsa->d, lcm, ctx)\n          && BN_is_one(r));\n    BN_clear(p1);\n    BN_clear(q1);\n    BN_clear(lcm);\n    BN_clear(gcd);\n    BN_CTX_end(ctx);\n    return ret;\n}', 'void BN_CTX_start(BN_CTX *ctx)\n{\n    CTXDBG("ENTER BN_CTX_start()", ctx);\n    if (ctx->err_stack || ctx->too_many)\n        ctx->err_stack++;\n    else if (!BN_STACK_push(&ctx->stack, ctx->used)) {\n        BNerr(BN_F_BN_CTX_START, BN_R_TOO_MANY_TEMPORARY_VARIABLES);\n        ctx->err_stack++;\n    }\n    CTXDBG("LEAVE BN_CTX_start()", ctx);\n}', 'void BN_CTX_end(BN_CTX *ctx)\n{\n    if (ctx == NULL)\n        return;\n    CTXDBG("ENTER BN_CTX_end()", ctx);\n    if (ctx->err_stack)\n        ctx->err_stack--;\n    else {\n        unsigned int fp = BN_STACK_pop(&ctx->stack);\n        if (fp < ctx->used)\n            BN_POOL_release(&ctx->pool, ctx->used - fp);\n        ctx->used = fp;\n        ctx->too_many = 0;\n    }\n    CTXDBG("LEAVE BN_CTX_end()", ctx);\n}', 'static unsigned int BN_STACK_pop(BN_STACK *st)\n{\n    return st->indexes[--(st->depth)];\n}']