From: Andrey Konovalov <andreyknvl@google.com>
To: Will Deacon <will.deacon@arm.com>
Cc: Dave Martin <Dave.Martin@arm.com>,
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>,
Andrew Morton <akpm@linux-foundation.org>,
Mark Rutland <mark.rutland@arm.com>,
Nick Desaulniers <ndesaulniers@google.com>,
Marc Zyngier <marc.zyngier@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 <kstewart@linuxfoundation.org>,
Mike Rapoport <rppt@linux.vnet.ibm.com>,
kasan-dev <kasan-dev@googlegroups.com>,
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Chintan Pandya <cpandya@codeaurora.org>,
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Jann Horn <jannh@google.com>,
Ruben Ayrapetyan <Ruben.Ayrapetyan@arm.com>,
Lee Smith <Lee.Smith@arm.com>, Kostya Serebryany <kcc@google.com>,
Mark Brand <markbrand@google.com>,
Ramana Radhakrishnan <Ramana.Radhakrishnan@arm.com>,
Evgeniy Stepanov <eugenis@google.com>
Subject: Re: [PATCH v4 00/17] khwasan: kernel hardware assisted address sanitizer
Date: Fri, 29 Jun 2018 18:36:10 +0200 [thread overview]
Message-ID: <CAAeHK+wHd8B2nhat-Z2Y2=s4NVobPG7vjr2CynjFhqPTwQRepQ@mail.gmail.com> (raw)
In-Reply-To: <20180629110709.GA17859@arm.com>
On Fri, Jun 29, 2018 at 1:07 PM, Will Deacon <will.deacon@arm.com> wrote:
> It might not seen sensible, but we could still be relying on this in the
> kernel and so this change would introduce a regression. I think we need
> a way to identify such pointer usage before these patches can seriously be
> considered for mainline inclusion.
Another point that I have here is that KHWASAN is a debugging tool not
meant to be used in production. We're not trying to change the ABI or
something like that (referring to the other HWASAN patchset). We can
fix up the non obvious places where untagging is needed in a case by
case basis with additional patches when testing reveals it.
next prev parent reply other threads:[~2018-06-29 16:36 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-26 13:15 [PATCH v4 00/17] khwasan: kernel hardware assisted address sanitizer Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 01/17] khwasan, mm: change kasan hooks signatures Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 02/17] khwasan: move common kasan and khwasan code to common.c Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 03/17] khwasan: add CONFIG_KASAN_GENERIC and CONFIG_KASAN_HW Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 04/17] khwasan, arm64: adjust shadow size for CONFIG_KASAN_HW Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 05/17] khwasan: initialize shadow to 0xff Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 06/17] khwasan, arm64: untag virt address in __kimg_to_phys and _virt_addr_is_linear Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 07/17] khwasan: add tag related helper functions Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 08/17] khwasan, arm64: fix up fault handling logic Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 09/17] khwasan, arm64: enable top byte ignore for the kernel Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 10/17] khwasan, mm: perform untagged pointers comparison in krealloc Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 11/17] khwasan: split out kasan_report.c from report.c Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 12/17] khwasan: add bug reporting routines Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 13/17] khwasan: add hooks implementation Andrey Konovalov
2018-07-25 13:44 ` Vincenzo Frascino@Foss
2018-07-31 13:05 ` Andrey Konovalov
2018-07-31 14:50 ` Andrey Ryabinin
2018-07-31 15:03 ` Dmitry Vyukov
2018-07-31 15:38 ` Christopher Lameter
2018-07-31 16:03 ` Dmitry Vyukov
2018-07-31 16:04 ` Andrey Ryabinin
2018-07-31 16:08 ` Dmitry Vyukov
2018-07-31 16:18 ` Andrey Ryabinin
2018-07-31 15:21 ` Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 14/17] khwasan, arm64: add brk handler for inline instrumentation Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 15/17] khwasan, mm, arm64: tag non slab memory allocated via pagealloc Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 16/17] khwasan: update kasan documentation Andrey Konovalov
2018-06-26 13:15 ` [PATCH v4 17/17] kasan: add SPDX-License-Identifier mark to source files Andrey Konovalov
2018-06-27 23:08 ` [PATCH v4 00/17] khwasan: kernel hardware assisted address sanitizer Andrew Morton
2018-06-28 0:04 ` Kostya Serebryany
[not found] ` <CAEZpscCcP6=O_OCqSwW8Y6u9Ee99SzWN+hRcgpP2tK=OEBFnNw@mail.gmail.com>
2018-06-28 1:11 ` Andrew Morton
2018-06-28 18:26 ` Andrey Konovalov
2018-06-28 7:01 ` Geert Uytterhoeven
2018-07-02 20:33 ` Matthew Wilcox
2018-07-02 23:39 ` Evgenii Stepanov
2018-06-28 18:29 ` Andrey Konovalov
2018-06-28 19:40 ` Andrew Morton
2018-06-29 12:45 ` Andrey Konovalov
2018-06-29 13:01 ` Mark Rutland
2018-06-29 14:40 ` Andrey Konovalov
2018-06-30 2:41 ` Andrew Morton
2018-07-02 19:16 ` Evgenii Stepanov
2018-07-02 19:21 ` Andrew Morton
2018-07-02 20:22 ` Evgenii Stepanov
2018-07-02 20:30 ` Andrew Morton
2018-06-28 10:51 ` Dave Martin
2018-06-28 18:56 ` Andrey Konovalov
2018-06-29 10:14 ` Mark Rutland
2018-06-29 11:04 ` Dave Martin
2018-06-29 11:26 ` Luc Van Oostenryck
2018-06-29 13:18 ` Andrey Konovalov
2018-06-29 13:42 ` Dan Carpenter
2018-06-29 11:07 ` Catalin Marinas
2018-06-29 11:07 ` Will Deacon
2018-06-29 16:36 ` Andrey Konovalov [this message]
2018-07-03 17:36 ` Will Deacon
2018-07-18 17:16 ` Andrey Konovalov
2018-07-31 13:22 ` Andrey Konovalov
2018-08-01 16:35 ` Will Deacon
2018-08-01 16:52 ` Dmitry Vyukov
2018-08-02 11:10 ` Catalin Marinas
2018-08-02 11:36 ` Dmitry Vyukov
2018-08-02 13:52 ` Catalin Marinas
2018-08-02 14:11 ` Andrey Ryabinin
2018-08-03 9:23 ` Will Deacon
2018-08-03 9:42 ` Dmitry Vyukov
2018-08-08 16:27 ` Will Deacon
2018-08-08 16:53 ` Dmitry Vyukov
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