From: Andrey Konovalov <andreyknvl@google.com>
To: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>,
Alexander Potapenko <glider@google.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@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>,
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 <kstewart@linuxfoundation.org>,
Mike Rapoport <rppt@linux.vnet.ibm.com>,
kasan-dev <kasan-dev@googlegroups.com>,
"open list:DOCUMENTATION" <linux-doc@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
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"open list:KERNEL BUILD + fi..." <linux-kbuild@vger.kernel.org>,
Kostya Serebryany <kcc@google.com>,
Evgeniy Stepanov <eugenis@google.com>,
Lee Smith <Lee.Smith@arm.com>,
Ramana Radhakrishnan <Ramana.Radhakrishnan@arm.com>,
Jacob Bramley <Jacob.Bramley@arm.com>,
Ruben Ayrapetyan <Ruben.Ayrapetyan@arm.com>,
Jann Horn <jannh@google.com>, Mark Brand <markbrand@google.com>,
Chintan Pandya <cpandya@codeaurora.org>,
Vishwath Mohan <vishwath@google.com>
Subject: Re: [PATCH v6 17/18] khwasan: update kasan documentation
Date: Tue, 18 Sep 2018 20:42:56 +0200 [thread overview]
Message-ID: <CAAeHK+wDhpX_E7cL8D4-BnM4WCT_Bb2Gp6wfqk7+P-4XAoiMOg@mail.gmail.com> (raw)
In-Reply-To: <CACT4Y+a0A1n+FjbiQSEh4UMUPkq4KnqEOEXkfo-X+EwsVFZxMg@mail.gmail.com>
On Wed, Sep 12, 2018 at 8:39 PM, Dmitry Vyukov <dvyukov@google.com> wrote:
> On Wed, Aug 29, 2018 at 1:35 PM, Andrey Konovalov <andreyknvl@google.com> wrote:
>> This patch updates KASAN documentation to reflect the addition of KHWASAN.
>> -Currently KASAN is supported only for the x86_64 and arm64 architectures.
>> +KASAN uses compile-time instrumentation to insert validity checks before every
>> +memory access, and therefore requires a compiler version that supports that.
>> +For classic KASAN you need GCC version 4.9.2 or later. GCC 5.0 or later is
>> +required for detection of out-of-bounds accesses on stack and global variables.
>> +KHWASAN in turns is only supported in clang and requires revision 330044 or
>
> in turn?
>
>> -and choose between CONFIG_KASAN_OUTLINE and CONFIG_KASAN_INLINE. Outline and
>> -inline are compiler instrumentation types. The former produces smaller binary
>> -the latter is 1.1 - 2 times faster. Inline instrumentation requires a GCC
>> +and choose between CONFIG_KASAN_GENERIC (to enable classic KASAN) and
>> +CONFIG_KASAN_HW (to enabled KHWASAN). You also need to choose choose between
>
> to enable
>
>> + print_address_description+0x73/0x280 mm/kasan/report.c:254
>
>
> KASAN does not print line numbers per se.
> I think we need to show unmodified output to not confuse readers
> (probably remove the useless ? lines).
Will fix all in v7.
next prev parent reply other threads:[~2018-09-18 18:43 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-29 11:35 [PATCH v6 00/18] khwasan: kernel hardware assisted address sanitizer Andrey Konovalov
2018-08-29 11:35 ` [PATCH v6 01/18] khwasan, mm: change kasan hooks signatures Andrey Konovalov
2018-08-29 11:35 ` [PATCH v6 02/18] khwasan: move common kasan and khwasan code to common.c Andrey Konovalov
2018-08-29 11:35 ` [PATCH v6 03/18] khwasan: add CONFIG_KASAN_GENERIC and CONFIG_KASAN_HW Andrey Konovalov
2018-09-12 14:47 ` Dmitry Vyukov
2018-09-12 14:51 ` Dmitry Vyukov
2018-09-17 18:42 ` Andrey Konovalov
2018-08-29 11:35 ` [PATCH v6 04/18] khwasan, arm64: adjust shadow size for CONFIG_KASAN_HW Andrey Konovalov
2018-09-12 14:54 ` Dmitry Vyukov
2018-09-19 17:27 ` Andrey Konovalov
2018-08-29 11:35 ` [PATCH v6 05/18] khwasan: initialize shadow to 0xff Andrey Konovalov
2018-08-29 11:35 ` [PATCH v6 06/18] khwasan, arm64: untag virt address in __kimg_to_phys and _virt_addr_is_linear Andrey Konovalov
2018-09-12 16:33 ` Dmitry Vyukov
2018-09-18 17:09 ` Andrey Konovalov
2018-08-29 11:35 ` [PATCH v6 07/18] khwasan: add tag related helper functions Andrey Konovalov
2018-09-12 16:21 ` Dmitry Vyukov
2018-09-17 18:59 ` Andrey Konovalov
2018-09-18 15:45 ` Dmitry Vyukov
2018-08-29 11:35 ` [PATCH v6 08/18] khwasan: preassign tags to objects with ctors or SLAB_TYPESAFE_BY_RCU Andrey Konovalov
2018-09-12 16:36 ` Dmitry Vyukov
2018-09-18 16:50 ` Andrey Konovalov
2018-08-29 11:35 ` [PATCH v6 09/18] khwasan, arm64: fix up fault handling logic Andrey Konovalov
2018-08-29 11:35 ` [PATCH v6 10/18] khwasan, arm64: enable top byte ignore for the kernel Andrey Konovalov
2018-08-29 11:35 ` [PATCH v6 11/18] khwasan, mm: perform untagged pointers comparison in krealloc Andrey Konovalov
2018-08-29 11:35 ` [PATCH v6 12/18] khwasan: split out kasan_report.c from report.c Andrey Konovalov
2018-08-29 11:35 ` [PATCH v6 13/18] khwasan: add bug reporting routines Andrey Konovalov
2018-09-12 17:50 ` Dmitry Vyukov
2018-09-18 17:36 ` Andrey Konovalov
2018-08-29 11:35 ` [PATCH v6 14/18] khwasan: add hooks implementation Andrey Konovalov
2018-09-12 18:30 ` Dmitry Vyukov
2018-09-19 11:54 ` Andrey Konovalov
2018-08-29 11:35 ` [PATCH v6 15/18] khwasan, arm64: add brk handler for inline instrumentation Andrey Konovalov
2018-09-12 17:13 ` 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
2018-08-29 11:35 ` [PATCH v6 16/18] khwasan, mm, arm64: tag non slab memory allocated via pagealloc Andrey Konovalov
2018-09-07 16:06 ` Andrey Ryabinin
2018-09-11 16:10 ` Andrey Konovalov
2018-08-29 11:35 ` [PATCH v6 17/18] khwasan: update kasan documentation Andrey Konovalov
2018-09-12 18:39 ` Dmitry Vyukov
2018-09-18 18:42 ` Andrey Konovalov [this message]
2018-08-29 11:35 ` [PATCH v6 18/18] kasan: add SPDX-License-Identifier mark to source files Andrey Konovalov
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
2018-09-06 16:39 ` Nick Desaulniers
2018-09-14 15:28 ` Will Deacon
2018-09-19 18:53 ` Andrey Konovalov
2018-09-07 16:10 ` Andrey Ryabinin
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