nginx 0.8.14 *) Bugfix: an expired cached response might stick in the "UPDATING" state. *) Bugfix: a segmentation fault might occur in worker process, if error_log was set to info or debug level. Thanks to Sergey Bochenkov. *) Bugfix: in embedded perl module; the bug had appeared in 0.8.11. *) Bugfix: an "error_page" directive did not redirect a 413 error; the bug had appeared in 0.6.10.

--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -2113,6 +2113,10 @@ ngx_http_upstream_send_response(ngx_http
     ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
                    "http cacheable: %d", u->cacheable);
 
+    if (u->cacheable == 0 && r->cache) {
+        ngx_http_file_cache_free(r, u->pipe->temp_file);
+    }
+
 #endif
 
     p = u->pipe;