diff --git a/lib/test_hmm.c b/lib/test_hmm.c
index 67e6f83fe0f8..be50a1fdba70 100644
--- a/lib/test_hmm.c
+++ b/lib/test_hmm.c
@@ -1232,8 +1232,8 @@ static void dmirror_device_evict_chunk(struct dmirror_chunk *chunk)
 	unsigned long *src_pfns;
 	unsigned long *dst_pfns;
 
-	src_pfns = kcalloc(npages, sizeof(*src_pfns), GFP_KERNEL);
-	dst_pfns = kcalloc(npages, sizeof(*dst_pfns), GFP_KERNEL);
+	src_pfns = kvcalloc(npages, sizeof(*src_pfns), GFP_KERNEL | __GFP_NOFAIL);
+	dst_pfns = kvcalloc(npages, sizeof(*dst_pfns), GFP_KERNEL | __GFP_NOFAIL);
 
 	migrate_device_range(src_pfns, start_pfn, npages);
 	for (i = 0; i < npages; i++) {
@@ -1256,8 +1256,8 @@ static void dmirror_device_evict_chunk(struct dmirror_chunk *chunk)
 	}
 	migrate_device_pages(src_pfns, dst_pfns, npages);
 	migrate_device_finalize(src_pfns, dst_pfns, npages);
-	kfree(src_pfns);
-	kfree(dst_pfns);
+	kvfree(src_pfns);
+	kvfree(dst_pfns);
 }
 
 /* Removes free pages from the free list so they can't be re-allocated */