nginx 0.3.54 *) Feature: nginx now logs the subrequest information to the error log. *) Feature: the "proxy_next_upstream", "fastcgi_next_upstream", and "memcached_next_upstream" directives support the "off" parameter. *) Feature: the "debug_connection" directive supports the CIDR address form. *) Bugfix: if a response of proxied server or FastCGI server was converted from UTF-8 or back, then it may be transferred incomplete. *) Bugfix: the $upstream_response_time variable had the time of the first request to a backend only. *) Bugfix: nginx could not be built on amd64 platform; bug appeared in 0.3.53.

--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -1162,6 +1162,7 @@ ngx_http_subrequest(ngx_http_request_t *
 {
     ngx_connection_t              *c;
     ngx_http_request_t            *sr;
+    ngx_http_log_ctx_t            *ctx;
     ngx_http_core_srv_conf_t      *cscf;
     ngx_http_postponed_request_t  *pr, *p;
 
@@ -1273,6 +1274,9 @@ ngx_http_subrequest(ngx_http_request_t *
         r->postponed = pr;
     }
 
+    ctx = c->log->data;
+    ctx->current_request = sr;
+
     sr->internal = 1;
     sr->fast_subrequest = 1;