CONFIG_PAGE_POISONING (not configurable)

modulename: debug-pagealloc.ko

and/or

page_poison.ko

configname: CONFIG_PAGE_POISONING

Linux Kernel Configuration
└─>Memory Debugging
└─>PAGE_POISONING
In linux kernel since version 2.6.30 (release Date: 2009-06-09)  
source code:
mm/debug-pagealloc.c