default or selected kernelversion does not have config value CONFIG_CC_STACKPROTECTOR_REGULAR.
Result is shown for kernelversion 6.7-rc3



Stack Protector buffer overflow detection
In linux kernel since version 3.14 (release Date: 2014-03-30)  
Functions will have the stack-protector canary logic added if they
have an 8-byte or larger character array on the stack.

This feature requires gcc version 4.2 or above, or a distribution
gcc with the feature backported ("-fstack-protector").

On an x86 "defconfig" build, this feature adds canary checks to
about 3% of all kernel functions, which increases kernel code size
by about 0.3%.