config KALLSYMS bool default "y" help Say Y here to let the kernel print out symbolic crash information and symbolic stack backtraces. This increases the size of the kernel somewhat, as all symbols have to be loaded into the kernel image. config KALLSYSM_ALL bool default "y" help Normally kallsyms only contains the symbols of functions, for nicer OOPS messages. Some debuggers can use kallsyms for other symbols too: say Y here to include all symbols, if you need them and you don't care about adding to the size of your kernel.