On Wed, Nov 04, 2020 at 08:22:07PM +0100, Andrey Konovalov wrote:
On Wed, Nov 4, 2020 at 8:11 PM Vasily Gorbik [off-list ref] wrote:
quoted
On Mon, Nov 02, 2020 at 05:03:56PM +0100, Andrey Konovalov wrote:
quoted
This is a preparatory commit for the upcoming addition of a new hardware
tag-based (MTE-based) KASAN mode.
The new mode won't be using shadow memory, but will still use the concept
of memory granules. Each memory granule maps to a single metadata entry:
8 bytes per one shadow byte for generic mode, 16 bytes per one shadow byte
for software tag-based mode, and 16 bytes per one allocation tag for
hardware tag-based mode.
Rename KASAN_SHADOW_SCALE_SIZE to KASAN_GRANULE_SIZE, and KASAN_SHADOW_MASK
to KASAN_GRANULE_MASK.
Also use MASK when used as a mask, otherwise use SIZE.
No functional changes.
Signed-off-by: Andrey Konovalov <redacted>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Marco Elver <elver@google.com>
---
Change-Id: Iac733e2248aa9d29f6fc425d8946ba07cca73ecf
---
Documentation/dev-tools/kasan.rst | 2 +-
lib/test_kasan.c | 2 +-
mm/kasan/common.c | 39 ++++++++++++++++---------------
mm/kasan/generic.c | 14 +++++------
mm/kasan/generic_report.c | 8 +++----
mm/kasan/init.c | 8 +++----
mm/kasan/kasan.h | 4 ++--
mm/kasan/report.c | 10 ++++----
mm/kasan/tags_report.c | 2 +-
9 files changed, 45 insertions(+), 44 deletions(-)
hm, this one got escaped somehow
lib/test_kasan_module.c:
18 #define OOB_TAG_OFF (IS_ENABLED(CONFIG_KASAN_GENERIC) ? 0 : KASAN_SHADOW_SCALE_SIZE)
You mean it's not on the patch? It is, almost at the very top.
lib/test_kasan_module.c != lib/test_kasan.c
I fetched your branch. And I had to fix it up to build old good kasan
test module CONFIG_TEST_KASAN_MODULE=m
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