default or selected kernelversion does not have config value CONFIG_HAVE_ARCH_KMEMCHECK.
Result is shown for kernelversion 6.5.1

CONFIG_HAVE_ARCH_KMEMCHECK (not configurable)

configname: CONFIG_HAVE_ARCH_KMEMCHECK

Linux Kernel Configuration
└─>Memory Debugging
└─>HAVE_ARCH_KMEMCHECK
In linux kernel since version 2.6.31 (release Date: 2009-09-09)  
is selected by
CONFIG_KMEMCHECK