default or selected kernelversion does not have config value CONFIG_PSTORE_842_COMPRESS.
Result is shown for kernelversion 6.9.9
842 compression
configname: CONFIG_PSTORE_842_COMPRESS
Linux Kernel Configuration
└─>File systems
└─>Miscellaneous filesystems
└─>842 compression
In linux kernel since version 3.10 (release Date: 2013-06-30)
This option enables 842 compression algorithm support.