--- a/hotspot/src/cpu/s390/vm/globals_s390.hpp	Tue Jan 03 11:22:37 2017 +0100
+++ b/hotspot/src/cpu/s390/vm/globals_s390.hpp	Tue Dec 27 16:10:59 2016 +0100
@@ -56,7 +56,7 @@
 // Java_java_net_SocketOutputStream_socketWrite0() uses a 64k buffer on the
 // stack. To pass stack overflow tests we need 20 shadow pages.
 #define DEFAULT_STACK_SHADOW_PAGES   (20 DEBUG_ONLY(+2))
-#define DEFAULT_STACK_RESERVED_PAGES (0)
+#define DEFAULT_STACK_RESERVED_PAGES (1)
 
 #define MIN_STACK_YELLOW_PAGES     DEFAULT_STACK_YELLOW_PAGES
 #define MIN_STACK_RED_PAGES        DEFAULT_STACK_RED_PAGES