On Tue, Nov 10, 2020 at 11:11 PM Andrey Konovalov <andreyknvl@xxxxxxxxxx> wrote: > > This is a preparatory commit for the upcoming addition of a new hardware > tag-based (MTE-based) KASAN mode. > > kasan_non_canonical_hook() is only applicable to KASAN modes that use > shadow memory, and won't be needed for hardware tag-based KASAN. > > No functional changes for software modes. > > Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx> > Signed-off-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx> > Reviewed-by: Marco Elver <elver@xxxxxxxxxx> > --- > Change-Id: Icc9f5ef100a2e86f3a4214a0c3131a68266181b2 > --- > mm/kasan/report.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/mm/kasan/report.c b/mm/kasan/report.c > index 5d5733831ad7..594bad2a3a5e 100644 > --- a/mm/kasan/report.c > +++ b/mm/kasan/report.c > @@ -403,7 +403,8 @@ bool kasan_report(unsigned long addr, size_t size, bool is_write, > return ret; > } > > -#ifdef CONFIG_KASAN_INLINE > +#if (defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)) && \ > + defined(CONFIG_KASAN_INLINE) > /* > * With CONFIG_KASAN_INLINE, accesses to bogus pointers (outside the high > * canonical half of the address space) cause out-of-bounds shadow memory reads Perhaps this comment also needs to be updated. > -- > 2.29.2.222.g5d2a92d10f8-goog > -- Alexander Potapenko Software Engineer Google Germany GmbH Erika-Mann-Straße, 33 80636 München Geschäftsführer: Paul Manicle, Halimah DeLaine Prado Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg
