diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 2289a0416cdc..7f3c53c0d3d4 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -3591,6 +3591,13 @@ static void __split_folio_to_order(struct folio *folio, int old_order,
 		new_folio->mapping = folio->mapping;
 		new_folio->index = folio->index + i;
 
+		/*
+		 * page->private should not be set in tail pages. Warn once
+		 * if private is unexpectedly set. Do it before swap.val assignment
+		 * since private overlaps with swap.val.
+		 */
+		VM_WARN_ON_ONCE_PAGE(new_folio->private, new_head);
+
 		if (folio_test_swapcache(folio))
 			new_folio->swap.val = folio->swap.val + i;