1 files changed, 1 insertions, 1 deletions

diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index e10f4ca00499..cbfcfd02a43a 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -657,7 +657,7 @@ __cpu_up(unsigned int cpu)
         idle = current_set[cpu];
         cpu_lowcore = lowcore_ptr[cpu];
         cpu_lowcore->kernel_stack = (unsigned long)
-                idle->thread_info + (THREAD_SIZE);
+                task_stack_page(idle) + (THREAD_SIZE);
         sf = (struct stack_frame *) (cpu_lowcore->kernel_stack
                                      - sizeof(struct pt_regs)
                                      - sizeof(struct stack_frame));