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-rw-r--r--mm/sparse.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/sparse.c b/mm/sparse.c
index 338cf946de..aed0951b87 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -908,7 +908,8 @@ int __meminit sparse_add_section(int nid, unsigned long start_pfn,
* Poison uninitialized struct pages in order to catch invalid flags
* combinations.
*/
- page_init_poison(memmap, sizeof(struct page) * nr_pages);
+ if (!altmap || !altmap->inaccessible)
+ page_init_poison(memmap, sizeof(struct page) * nr_pages);
ms = __nr_to_section(section_nr);
set_section_nid(section_nr, nid);