default or selected kernelversion does not have config value CONFIG_HAVE_DEBUG_KMEMLEAK.
Result is shown for kernelversion 6.9-rc5
CONFIG_HAVE_DEBUG_KMEMLEAK (not configurable)
configname: CONFIG_HAVE_DEBUG_KMEMLEAK
Linux Kernel Configuration
└─>Kernel hacking
└─>Memory Debugging
└─>HAVE_DEBUG_KMEMLEAK