[PATCH 4.4 56/58] mm: dont dereference struct page fields of invalid pages

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Ard Biesheuvel [ Upstream commit f073bdc51771f5a5c7a8d1191bfc3ae371d44de7 ] The VM_BUG_ON() check in move_freepages() checks whether the node id of a page matches

[PATCH 4.4 56/58] mm: dont dereference struct page fields of invalid pages

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Ard Biesheuvel [ Upstream commit f073bdc51771f5a5c7a8d1191bfc3ae371d44de7 ] The VM_BUG_ON() check in move_freepages() checks whether the node id of a page matches the node id of its zone.