On Thu, Jan 21, 2021 at 5:39 PM Vincenzo Frascino <[email protected]> wrote: > > KASAN provides an asynchronous mode of execution. > > Add reporting functionality for this mode. > > Cc: Dmitry Vyukov <[email protected]> > Cc: Andrey Ryabinin <[email protected]> > Cc: Alexander Potapenko <[email protected]> > Cc: Andrey Konovalov <[email protected]> > Signed-off-by: Vincenzo Frascino <[email protected]> > --- > include/linux/kasan.h | 2 ++ > mm/kasan/report.c | 11 +++++++++++ > 2 files changed, 13 insertions(+) > > diff --git a/include/linux/kasan.h b/include/linux/kasan.h > index bb862d1f0e15..b0a1d9dfa85c 100644 > --- a/include/linux/kasan.h > +++ b/include/linux/kasan.h > @@ -351,6 +351,8 @@ static inline void *kasan_reset_tag(const void *addr) > bool kasan_report(unsigned long addr, size_t size, > bool is_write, unsigned long ip); > > +void kasan_report_async(void); > + > #else /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */ > > static inline void *kasan_reset_tag(const void *addr) > diff --git a/mm/kasan/report.c b/mm/kasan/report.c > index 234f35a84f19..2fd6845a95e9 100644 > --- a/mm/kasan/report.c > +++ b/mm/kasan/report.c > @@ -358,6 +358,17 @@ void kasan_report_invalid_free(void *object, unsigned > long ip) > end_report(&flags); > } > > +void kasan_report_async(void) > +{ > + unsigned long flags; > + > + start_report(&flags); > + pr_err("BUG: KASAN: invalid-access\n"); > + pr_err("Asynchronous mode enabled: no access details available\n"); > + dump_stack(); > + end_report(&flags); > +} > + > static void __kasan_report(unsigned long addr, size_t size, bool is_write, > unsigned long ip) > { > -- > 2.30.0 >
Reviewed-by: Andrey Konovalov <[email protected]> FTR: this will conflict with the Alex's patch: https://lore.kernel.org/linux-api/[email protected]/T/#m8872c56af85babfc08784e2b2fcd5cc1c0c73859
