diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c
index ce006af..da28422 100644
--- a/drivers/android/binder_alloc.c
+++ b/drivers/android/binder_alloc.c
@@ -219,6 +219,11 @@
 
 	if (mm) {
 		down_read(&mm->mmap_sem);
+		if (!mmget_still_valid(mm)) {
+			if (allocate == 0)
+				goto free_range;
+			goto err_no_vma;
+		}
 		vma = alloc->vma;
 	}