From: Vasily Gorbik <gor@linux.ibm.com>
To: Andrey Konovalov <andreyknvl@google.com>
Cc: Linux ARM <linux-arm-kernel@lists.infradead.org>,
Marco Elver <elver@google.com>,
Elena Petrova <lenaptr@google.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Kevin Brodsky <kevin.brodsky@arm.com>,
Will Deacon <will.deacon@arm.com>,
Branislav Rankov <Branislav.Rankov@arm.com>,
kasan-dev <kasan-dev@googlegroups.com>,
LKML <linux-kernel@vger.kernel.org>,
Linux Memory Management List <linux-mm@kvack.org>,
Alexander Potapenko <glider@google.com>,
Evgenii Stepanov <eugenis@google.com>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Andrew Morton <akpm@linux-foundation.org>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Dmitry Vyukov <dvyukov@google.com>
Subject: Re: [PATCH v7 16/41] kasan: rename KASAN_SHADOW_* to KASAN_GRANULE_*
Date: Wed, 4 Nov 2020 20:30:42 +0100 [thread overview]
Message-ID: <your-ad-here.call-01604518242-ext-7611@work.hours> (raw)
In-Reply-To: <CAAeHK+wuJ5HuGgyor903VcBJSx8sUewJqmhA_nsbVbw0h2UFXg@mail.gmail.com>
On Wed, Nov 04, 2020 at 08:22:07PM +0100, Andrey Konovalov wrote:
> On Wed, Nov 4, 2020 at 8:11 PM Vasily Gorbik <gor@linux.ibm.com> wrote:
> >
> > On Mon, Nov 02, 2020 at 05:03:56PM +0100, Andrey Konovalov wrote:
> > > 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 <andreyknvl@google.com>
> > > 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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next prev parent reply other threads:[~2020-11-04 19:31 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-02 16:03 [PATCH v7 00/41] kasan: add hardware tag-based mode for arm64 Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 01/41] arm64: Enable armv8.5-a asm-arch option Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 02/41] arm64: mte: Add in-kernel MTE helpers Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 03/41] arm64: mte: Reset the page tag in page->flags Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 04/41] arm64: kasan: Add arch layer for memory tagging helpers Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 05/41] arm64: mte: Add in-kernel tag fault handler Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 06/41] arm64: kasan: Enable in-kernel MTE Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 07/41] arm64: mte: Convert gcr_user into an exclude mask Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 08/41] arm64: mte: Switch GCR_EL1 in kernel entry and exit Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 09/41] arm64: kasan: Align allocations for HW_TAGS Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 10/41] kasan: drop unnecessary GPL text from comment headers Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 11/41] kasan: KASAN_VMALLOC depends on KASAN_GENERIC Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 12/41] kasan: group vmalloc code Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 13/41] s390/kasan: include asm/page.h from asm/kasan.h Andrey Konovalov
2020-11-04 17:19 ` Andrey Konovalov
2020-11-04 19:25 ` Vasily Gorbik
2020-11-04 19:26 ` Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 14/41] kasan: shadow declarations only for software modes Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 15/41] kasan: rename (un)poison_shadow to (un)poison_memory Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 16/41] kasan: rename KASAN_SHADOW_* to KASAN_GRANULE_* Andrey Konovalov
2020-11-04 19:11 ` Vasily Gorbik
2020-11-04 19:22 ` Andrey Konovalov
2020-11-04 19:30 ` Vasily Gorbik [this message]
2020-11-04 19:32 ` Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 17/41] kasan: only build init.c for software modes Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 18/41] kasan: split out shadow.c from common.c Andrey Konovalov
2020-11-02 16:03 ` [PATCH v7 19/41] kasan: define KASAN_GRANULE_PAGE Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 20/41] kasan: rename report and tags files Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 21/41] kasan: don't duplicate config dependencies Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 22/41] kasan: hide invalid free check implementation Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 23/41] kasan: decode stack frame only with KASAN_STACK_ENABLE Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 24/41] kasan, arm64: only init shadow for software modes Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 25/41] kasan, arm64: only use kasan_depth " Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 26/41] kasan: rename addr_has_shadow to addr_has_metadata Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 27/41] kasan: rename print_shadow_for_address to print_memory_metadata Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 28/41] kasan: kasan_non_canonical_hook only for software modes Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 29/41] kasan: rename SHADOW layout macros to META Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 30/41] kasan: separate metadata_fetch_row for each mode Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 31/41] kasan, arm64: don't allow SW_TAGS with ARM64_MTE Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 32/41] kasan: introduce CONFIG_KASAN_HW_TAGS Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 33/41] kasan: define KASAN_GRANULE_SIZE for HW_TAGS Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 34/41] kasan, x86, s390: update undef CONFIG_KASAN Andrey Konovalov
2020-11-04 17:28 ` Andrey Konovalov
2020-11-04 19:17 ` Vasily Gorbik
2020-11-02 16:04 ` [PATCH v7 35/41] kasan, arm64: expand CONFIG_KASAN checks Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 36/41] kasan, arm64: implement HW_TAGS runtime Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 37/41] kasan, arm64: print report from tag fault handler Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 38/41] kasan, mm: reset tags when accessing metadata Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 39/41] kasan, arm64: enable CONFIG_KASAN_HW_TAGS Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 40/41] kasan: add documentation for hardware tag-based mode Andrey Konovalov
2020-11-02 16:04 ` [PATCH v7 41/41] kselftest/arm64: Check GCR_EL1 after context switch Andrey Konovalov
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