CONFIG_NO_KERNEL_MSG is not available for thedefaultarchitecture x86.
Result is shown for architecture m68k

Suppress Kernel BUG Messages

configname: CONFIG_NO_KERNEL_MSG

Linux Kernel Configuration
└─>Suppress Kernel BUG Messages
In linux kernel since version 2.6.12  
Do not output any debug BUG messages within the kernel.

depends
NOT CONFIG_MMU