src/http/ngx_http_upstream.c:906: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned32 by call to `ngx_http_upstream_finalize_request`.

src/http/ngx_http_upstream.c:901:9: Call
899. 
900.     if (ctx->state) {
901.         ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
             ^
902.                       "%V could not be resolved (%i: %s)",
903.                       &ctx->name, ctx->state,

src/core/ngx_log.c:78:1: Parameter `log->file->fd`
  76. #if (NGX_HAVE_VARIADIC_MACROS)
  77. 
  78. void
      ^
  79. ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
  80.     const char *fmt, ...)

src/http/ngx_http_upstream.c:906:9: Call
904.                       ngx_resolver_strerror(ctx->state));
905. 
906.         ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
             ^
907.         goto failed;
908.     }

src/http/ngx_http_upstream.c:3296:1: Parameter `r->main->count`
  3294. 
  3295. 
  3296. static void
        ^
  3297. ngx_http_upstream_finalize_request(ngx_http_request_t *r,
  3298.     ngx_http_upstream_t *u, ngx_int_t rc)

src/http/ngx_http_upstream.c:3425:9: Call
  3423. 
  3424.     if (r->header_only) {
  3425.         ngx_http_finalize_request(r, rc);
                ^
  3426.         return;
  3427.     }

src/http/ngx_http_request.c:2198:1: Parameter `r->main->count`
    2196. 
    2197. 
    2198. void
          ^
    2199. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
    2200. {

src/http/ngx_http_request.c:2236:13: Call
    2234.         || c->error)
    2235.     {
    2236.         if (ngx_http_post_action(r) == NGX_OK) {
                      ^
    2237.             return;
    2238.         }

src/http/ngx_http_request.c:3256:1: <LHS trace>
3254. 
3255. 
3256. static ngx_int_t
      ^
3257. ngx_http_post_action(ngx_http_request_t *r)
3258. {

src/http/ngx_http_request.c:3256:1: Parameter `r->main->count`
      3254. 
      3255. 
      3256. static ngx_int_t
            ^
      3257. ngx_http_post_action(ngx_http_request_t *r)
      3258. {

src/http/ngx_http_request.c:3274:5: Binary operation: ([0, +oo] - 1):unsigned32 by call to `ngx_http_upstream_finalize_request` 
      3272.                    "post action: \"%V\"", &clcf->post_action);
      3273. 
      3274.     r->main->count--;
                ^
      3275. 
      3276.     r->http_version = NGX_HTTP_VERSION_9;
