Index: kernel/arch/sparc64/src/proc/scheduler.c
===================================================================
--- kernel/arch/sparc64/src/proc/scheduler.c	(revision cfa70adda5479cb3ac144ad8b0e43184319bd909)
+++ kernel/arch/sparc64/src/proc/scheduler.c	(revision 9b0f294d258634a764d70ae5a5088d9a836e88a6)
@@ -93,5 +93,5 @@
 		 */
 		uint64_t sp = (uintptr_t) THREAD->kstack + STACK_SIZE
-			- (STACK_BIAS + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT));
+			- (STACK_BIAS + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_WINDOW_SAVE_AREA_SIZE);
 		write_to_ig_g6(sp);
 		write_to_ag_g6(sp);