CONFIG_STACKPROTECTOR_PER_TASK is not available for the selected architecture x86.
Result is shown for architecture riscv

CONFIG_STACKPROTECTOR_PER_TASK (not configurable)

configname: CONFIG_STACKPROTECTOR_PER_TASK

Linux Kernel Configuration
└─>Boot options
└─>STACKPROTECTOR_PER_TASK
In linux kernel since version 4.14.326 (release Date: 2023-09-23)