--- a/hotspot/src/cpu/sparc/vm/globals_sparc.hpp	Tue Jun 14 19:38:44 2016 +0200
+++ b/hotspot/src/cpu/sparc/vm/globals_sparc.hpp	Mon Jun 13 09:28:25 2016 +0200
@@ -59,11 +59,11 @@
 // Stack slots are 2X larger in LP64 than in the 32 bit VM.
 define_pd_global(intx, ThreadStackSize,       1024);
 define_pd_global(intx, VMThreadStackSize,     1024);
-#define DEFAULT_STACK_SHADOW_PAGES (10 DEBUG_ONLY(+1))
+#define DEFAULT_STACK_SHADOW_PAGES (20 DEBUG_ONLY(+2))
 #else
 define_pd_global(intx, ThreadStackSize,       512);
 define_pd_global(intx, VMThreadStackSize,     512);
-#define DEFAULT_STACK_SHADOW_PAGES (3 DEBUG_ONLY(+1))
+#define DEFAULT_STACK_SHADOW_PAGES (6 DEBUG_ONLY(+2))
 #endif // _LP64
 
 #define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES