1 files changed, 1 insertions, 1 deletions

diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index c8da621aab17..4f36987eea72 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -155,7 +155,7 @@ ia64_set_rbs_bot (void)
 
         if (stack_size > MAX_USER_STACK_SIZE)
                 stack_size = MAX_USER_STACK_SIZE;
-        current->thread.rbs_bot = STACK_TOP - stack_size;
+        current->thread.rbs_bot = PAGE_ALIGN(current->mm->start_stack - stack_size);
 }
 
 /*