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

kmemcheck: allow bit-field manipulation


Linux Kernel Configuration
└─>Memory Debugging
└─>kmemcheck: trap use of uninitialized memory
└─>kmemcheck: allow bit-field manipulation
In linux kernel since version 2.6.31 (release Date: 2009-09-09)  
This option silences warnings that would be generated for bit-field
accesses where not all the bits are initialized at the same time.
This may also hide some real bugs.