diff --git a/arch/ia64/mm/tlb.c b/arch/ia64/mm/tlb.c
index 41105d4..6a4eec9 100644
--- a/arch/ia64/mm/tlb.c
+++ b/arch/ia64/mm/tlb.c
@@ -90,7 +90,7 @@
 {
 	static DEFINE_SPINLOCK(ptcg_lock);
 
-	if (mm != current->active_mm) {
+	if (mm != current->active_mm || !current->mm) {
 		flush_tlb_all();
 		return;
 	}