nginx 0.6.9 *) Bugfix: a worker process may got caught in an endless loop, if the HTTPS protocol was used; bug appeared in 0.6.7. *) Bugfix: if server listened on two addresses or ports and trailing wildcard was used, then nginx did not run. *) Bugfix: the "ip_hash" directive might incorrectly mark servers as down. *) Bugfix: nginx could not be built on amd64; bug appeared in 0.6.8.

--- a/src/http/ngx_http_request_body.c
+++ b/src/http/ngx_http_request_body.c
@@ -571,6 +571,10 @@ ngx_http_read_discarded_request_body(ngx
             return NGX_AGAIN;
         }
 
+        if (n == 0) {
+            return NGX_OK;
+        }
+
         r->headers_in.content_length_n -= n;
 
     } while (r->connection->read->ready);