X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;ds=sidebyside;f=mm%2Fpage_isolation.c;h=303c908790efca6f7d0b30cc6d8a9db918085e10;hb=cbce1a686700595de65ee363b9b3283ae85d8fc5;hp=755a42c76eb4747623da51acdeb780b322b5ac06;hpb=d56a669ca59c37ed0a7282a251b2f2f22533343a;p=karo-tx-linux.git

diff --git a/mm/page_isolation.c b/mm/page_isolation.c
index 755a42c76eb4..303c908790ef 100644
--- a/mm/page_isolation.c
+++ b/mm/page_isolation.c
@@ -101,7 +101,8 @@ void unset_migratetype_isolate(struct page *page, unsigned migratetype)
 			buddy_idx = __find_buddy_index(page_idx, order);
 			buddy = page + (buddy_idx - page_idx);
 
-			if (!is_migrate_isolate_page(buddy)) {
+			if (pfn_valid_within(page_to_pfn(buddy)) &&
+			    !is_migrate_isolate_page(buddy)) {
 				__isolate_free_page(page, order);
 				kernel_map_pages(page, (1 << order), 1);
 				set_page_refcounted(page);