Re: [PATCH] mm/slab: Do not hash pointers when debugging slab

[Christopher Lameter]

On Thu, 7 Dec 2017, Kees Cook wrote:

> > These SLAB config options are only used for testing so this is ok.
>
> Most systems use SLUB so I can't say how common CONFIG_DEBUG_SLAB is.
> (Though, FWIW with SLUB, CONFIG_SLUB_DEBUG is very common.)

CONFIG_SLUB_DEBUG is on by default because it compiles into the kernel the
runtime configurable debugging framework. It does not activate any
debugging.

CONFIG_SLUB_DEBUG_ON is the equivalent to CONFIG_SLAB_DEBUG. The kernel
will boot with debugging on without any extra kernel options with these.