diff --git a/fs/exec.c b/fs/exec.c
index 6518e33ea813..3e810badf9ab 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1037,7 +1037,8 @@ static int exec_mmap(struct mm_struct *mm)
 		mmput(old_mm);
 		return 0;
 	}
-	mmdrop_lazy_tlb(active_mm);
+	if (active_mm)
+		mmdrop_lazy_tlb(active_mm);
 	return 0;
 }