From: Andrey Konovalov <andreyknvl@google.com>
To: Will Deacon <will.deacon@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Alexander Potapenko <glider@google.com>,
Dmitry Vyukov <dvyukov@google.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Christoph Lameter <cl@linux.com>,
Mark Rutland <mark.rutland@arm.com>,
Nick Desaulniers <ndesaulniers@google.com>,
Marc Zyngier <marc.zyngier@arm.com>,
Dave Martin <dave.martin@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
"Eric W . Biederman" <ebiederm@xmission.com>,
Ingo Molnar <mingo@kernel.org>,
Paul Lawrence <paullawrence@google.com>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Arnd Bergmann <arnd@arndb.de>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Kate Stewart <ks>
Subject: Re: [PATCH v6 00/18] khwasan: kernel hardware assisted address sanitizer
Date: Thu, 6 Sep 2018 13:06:23 +0200 [thread overview]
Message-ID: <CAAeHK+wStsNwh2oKv-KCG4kx5538FuDMQ6Yw2X=sK5LPrw2DZg@mail.gmail.com> (raw)
In-Reply-To: <20180906100543.GI3592@arm.com>
On Thu, Sep 6, 2018 at 12:05 PM, Will Deacon <will.deacon@arm.com> wrote:
> On Wed, Sep 05, 2018 at 02:10:32PM -0700, Andrew Morton wrote:
>> On Wed, 29 Aug 2018 13:35:04 +0200 Andrey Konovalov <andreyknvl@google.com> wrote:
>>
>> > This patchset adds a new mode to KASAN [1], which is called KHWASAN
>> > (Kernel HardWare assisted Address SANitizer).
>>
>> We're at v6 and there are no reviewed-by's or acked-by's to be seen.
>> Is that a fair commentary on what has been happening, or have people
>> been remiss in sending and gathering such things?
>
> I still have concerns about the consequences of merging this as anything
> other than a debug option [1]. Unfortunately, merging it as a debug option
> defeats the whole point, so I think we need to spend more effort on developing
> tools that can help us to find and fix the subtle bugs which will arise from
> enabling tagged pointers in the kernel.
I totally don't mind calling it a debug option. Do I need to somehow
specify it somewhere?
Why does it defeat the point? The point is to ease KASAN-like testing
on devices with limited memory.
next prev parent reply other threads:[~2018-09-06 11:06 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1535462971.git.andreyknvl@google.com>
2018-09-05 21:10 ` [PATCH v6 00/18] khwasan: kernel hardware assisted address sanitizer Andrew Morton
2018-09-05 21:55 ` Nick Desaulniers
2018-09-06 10:05 ` Will Deacon
2018-09-06 11:06 ` Andrey Konovalov [this message]
2018-09-06 16:39 ` Nick Desaulniers
2018-09-14 15:28 ` Will Deacon
2018-09-19 18:53 ` Andrey Konovalov
[not found] ` <db103bdc2109396af0c6007f1669ebbbb63b872b.1535462971.git.andreyknvl@google.com>
[not found] ` <3f2dee71-1615-4a34-d611-3ccaf407551e@virtuozzo.com>
2018-09-11 16:10 ` [PATCH v6 16/18] khwasan, mm, arm64: tag non slab memory allocated via pagealloc Andrey Konovalov
[not found] ` <868c9168481ff5103034ac1e37b830d28ed5f4ee.1535462971.git.andreyknvl@google.com>
2018-09-12 14:47 ` [PATCH v6 03/18] khwasan: add CONFIG_KASAN_GENERIC and CONFIG_KASAN_HW Dmitry Vyukov
2018-09-12 14:51 ` Dmitry Vyukov
2018-09-17 18:42 ` Andrey Konovalov
[not found] ` <b4ba65afa55f2fdfd2856fb03c5aba99c7a8bdd7.1535462971.git.andreyknvl@google.com>
2018-09-12 14:54 ` [PATCH v6 04/18] khwasan, arm64: adjust shadow size for CONFIG_KASAN_HW Dmitry Vyukov
2018-09-19 17:27 ` Andrey Konovalov
[not found] ` <6cd298a90d02068969713f2fd440eae21227467b.1535462971.git.andreyknvl@google.com>
2018-09-12 16:21 ` [PATCH v6 07/18] khwasan: add tag related helper functions Dmitry Vyukov
2018-09-17 18:59 ` Andrey Konovalov
2018-09-18 15:45 ` Dmitry Vyukov
[not found] ` <19d757c2cafc277f0143a8ac34e179061f3487f5.1535462971.git.andreyknvl@google.com>
2018-09-12 16:33 ` [PATCH v6 06/18] khwasan, arm64: untag virt address in __kimg_to_phys and _virt_addr_is_linear Dmitry Vyukov
2018-09-18 17:09 ` Andrey Konovalov
[not found] ` <95b5beb7ec13b7e998efe84c9a7a5c1fa49a9fe3.1535462971.git.andreyknvl@google.com>
2018-09-12 16:36 ` [PATCH v6 08/18] khwasan: preassign tags to objects with ctors or SLAB_TYPESAFE_BY_RCU Dmitry Vyukov
2018-09-18 16:50 ` Andrey Konovalov
[not found] ` <f5e73b5ead3355932ad8b5fc96b141c3f5b8c16c.1535462971.git.andreyknvl@google.com>
2018-09-12 17:13 ` [PATCH v6 15/18] khwasan, arm64: add brk handler for inline instrumentation Dmitry Vyukov
2018-09-17 19:12 ` Andrey Konovalov
2018-09-12 17:15 ` Dmitry Vyukov
2018-09-12 17:39 ` Jann Horn
2018-09-13 8:37 ` Dmitry Vyukov
2018-09-13 18:09 ` Nick Desaulniers
2018-09-13 18:23 ` Jann Horn
2018-09-14 5:11 ` Dmitry Vyukov
[not found] ` <f39cdef4fde40b6d2ef356db3e0126bda0e1e8c7.1535462971.git.andreyknvl@google.com>
2018-09-12 17:50 ` [PATCH v6 13/18] khwasan: add bug reporting routines Dmitry Vyukov
2018-09-18 17:36 ` Andrey Konovalov
[not found] ` <4267d0903e0fdf9c261b91cf8a2bf0f71047a43c.1535462971.git.andreyknvl@google.com>
2018-09-12 18:30 ` [PATCH v6 14/18] khwasan: add hooks implementation Dmitry Vyukov
2018-09-19 11:54 ` Andrey Konovalov
[not found] ` <1a3b3030b6ee01931b397583b69f3af94e2a2308.1535462971.git.andreyknvl@google.com>
2018-09-12 18:39 ` [PATCH v6 17/18] khwasan: update kasan documentation Dmitry Vyukov
2018-09-18 18:42 ` Andrey Konovalov
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