--- nginx-1.2.5/src/http/ngx_http_upstream.c	2012-08-06 10:34:08.000000000 -0700
+++ nginx-1.2.5-patched/src/http/ngx_http_upstream.c	2012-11-05 21:17:38.000000000 -0800
@@ -1808,10 +1808,22 @@ ngx_http_upstream_test_connect(ngx_conne
 
 #if (NGX_HAVE_KQUEUE)
 
+    ngx_event_t *ev;
+
     if (ngx_event_flags & NGX_USE_KQUEUE_EVENT)  {
         if (c->write->pending_eof) {
+            ev = c->write;
+
+        } else if (c->read->pending_eof) {
+            ev = c->read;
+
+        } else {
+            ev = NULL;
+        }
+
+        if (ev) {
             c->log->action = "connecting to upstream";
-            (void) ngx_connection_error(c, c->write->kq_errno,
+            (void) ngx_connection_error(c, ev->kq_errno,
                                     "kevent() reported that connect() failed");
             return NGX_ERROR;
         }