Merge "These changes are a raw update to a vanilla kernel 4.1.10, with the recently announced rt patch patch-4.1.10-rt10.patch. No further changes needed."

1 files changed, 10 insertions, 0 deletions

diff --git a/kernel/drivers/base/node.c b/kernel/drivers/base/node.c
index a2aa65b42..b10479c87 100644
--- a/kernel/drivers/base/node.c
+++ b/kernel/drivers/base/node.c
@@ -388,6 +388,16 @@ int register_mem_sect_under_node(struct memory_block *mem_blk, int nid)
 	for (pfn = sect_start_pfn; pfn <= sect_end_pfn; pfn++) {
 		int page_nid;
 
+		/*
+		 * memory block could have several absent sections from start.
+		 * skip pfn range from absent section
+		 */
+		if (!pfn_present(pfn)) {
+			pfn = round_down(pfn + PAGES_PER_SECTION,
+					 PAGES_PER_SECTION) - 1;
+			continue;
+		}
+
 		page_nid = get_nid_for_pfn(pfn);
 		if (page_nid < 0)
 			continue;