Re: [PATCH] x86/refcount: Implement fast refcount_t handling

Peter Zijlstra
2017-04-24T10:49:12Z

On Fri, Apr 21, 2017 at 03:09:39PM -0700, Kees Cook wrote:
> diff --git a/drivers/misc/lkdtm_bugs.c b/drivers/misc/lkdtm_bugs.c
> index e3f4cd8876b5..1bdafb29b802 100644
> --- a/drivers/misc/lkdtm_bugs.c
> +++ b/drivers/misc/lkdtm_bugs.c
> @@ -135,9 +135,15 @@ void lkdtm_HUNG_TASK(void)
> schedule();
> }
>
> +#ifdef CONFIG_FAST_REFCOUNT
> +#define REFCOUNT_MAX INT_MAX
> +#else
> +#define REFCOUNT_MAX UINT_MAX
> +#endif

That doesn't seem like a sensible place for this.