--- libaitsched/src/hooks.c	2011/08/12 12:12:01	1.1.1.1.2.6
+++ libaitsched/src/hooks.c	2011/09/28 14:14:10	1.1.1.1.2.7
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: hooks.c,v 1.1.1.1.2.6 2011/08/12 12:12:01 misho Exp $
+* $Id: hooks.c,v 1.1.1.1.2.7 2011/09/28 14:14:10 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -309,7 +309,13 @@ retry:
 		timeout = NULL;
 	if ((en = kevent(r->root_kq, NULL, 0, res, KQ_EVENTS, timeout)) == -1) {
 		LOGERR;
+#ifdef NDEBUG
+		/* kevent no exit by error, if non-debug version */
 		goto retry;
+#else
+		/* diagnostic exit from scheduler if kevent error occur */
+		return NULL;
+#endif
 	}
 
 	nw.tv_sec = nw.tv_nsec = 0;