On Mon, Apr 24, 2017 at 3:48 AM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > 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. I'll drop the LKDTM changes from this particular patch. As for the define, I think it's only interesting to LKDTM since it's the only part interested in refcount_t internals. (i.e. nothing else would (or should) use this information.) -Kees -- Kees Cook Pixel Security
