1 files changed, 1 insertions, 1 deletions

diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 7dd14e8395e6..c6514ce0fcbc 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -371,7 +371,7 @@ asmlinkage void secondary_start_kernel(void)
          * reference and switch to it.
          */
         cpu = smp_processor_id();
-        atomic_inc(&mm->mm_count);
+        mmgrab(mm);
         current->active_mm = mm;
         cpumask_set_cpu(cpu, mm_cpumask(mm));