From: ryabinin.a.a@gmail.com (Andrey Ryabinin)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 5/5] arm64: add KASan support
Date: Mon, 24 Aug 2015 19:18:33 +0300 [thread overview]
Message-ID: <CAPAsAGwwEpKVVk4bxKhrGSQ-YBi74CrjTsn8Xmy4YpRB8c84VA@mail.gmail.com> (raw)
In-Reply-To: <55DB4372.5010406@arm.com>
2015-08-24 19:16 GMT+03:00 Vladimir Murzin <vladimir.murzin@arm.com>:
> On 24/08/15 17:00, Andrey Ryabinin wrote:
>> 2015-08-24 18:44 GMT+03:00 Vladimir Murzin <vladimir.murzin@arm.com>:
>>>
>>> Another option would be having "sparse" shadow memory based on page
>>> extension. I did play with that some time ago based on ideas from
>>> original v1 KASan support for x86/arm - it is how 614be38 "irqchip:
>>> gic-v3: Fix out of bounds access to cpu_logical_map" was caught.
>>> It doesn't require any VA reservations, only some contiguous memory for
>>> the page_ext itself, which serves as indirection level for the 0-order
>>> shadow pages.
>>
>> We won't be able to use inline instrumentation (I could live with that),
>> and most importantly, we won't be able to use stack instrumentation.
>> GCC needs to know shadow address for inline and/or stack instrumentation
>> to generate correct code.
>
> It's definitely a trade-off ;)
>
> Just for my understanding does that stack instrumentation is controlled
> via -asan-stack?
>
Yup.
next prev parent reply other threads:[~2015-08-24 16:18 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-15 13:58 [PATCH v2 0/5] KASan for arm64 Andrey Ryabinin
2015-05-15 13:59 ` [PATCH v2 1/5] kasan, x86: move KASAN_SHADOW_OFFSET to the arch Kconfig Andrey Ryabinin
2015-05-16 11:27 ` Paul Bolle
2015-05-18 7:43 ` Andrey Ryabinin
2015-05-18 8:34 ` Paul Bolle
2015-05-15 13:59 ` [PATCH v2 2/5] x86: kasan: fix types in kasan page tables declarations Andrey Ryabinin
2015-05-15 13:59 ` [PATCH v2 3/5] x86: kasan: generalize populate_zero_shadow() code Andrey Ryabinin
2015-05-15 13:59 ` [PATCH v2 4/5] kasan, x86: move populate_zero_shadow() out of arch directory Andrey Ryabinin
2015-05-15 13:59 ` [PATCH v2 5/5] arm64: add KASan support Andrey Ryabinin
2015-05-26 13:35 ` Linus Walleij
2015-05-26 14:12 ` Andrey Ryabinin
2015-05-26 14:22 ` Andrey Ryabinin
2015-05-26 20:28 ` Linus Walleij
2015-05-27 12:40 ` Linus Walleij
2015-06-11 13:39 ` Linus Walleij
2015-06-12 18:14 ` Andrey Ryabinin
2015-06-13 15:25 ` Linus Walleij
2015-06-17 21:32 ` Andrey Ryabinin
2015-07-21 10:36 ` Linus Walleij
2015-07-21 14:27 ` Andrey Ryabinin
2015-07-21 21:27 ` Linus Walleij
2015-07-22 17:54 ` Andrey Ryabinin
2015-08-19 12:14 ` Linus Walleij
2015-08-19 14:51 ` Andrey Ryabinin
2015-08-24 13:02 ` Linus Walleij
2015-08-24 13:15 ` Russell King - ARM Linux
2015-08-24 13:45 ` Linus Walleij
2015-08-24 14:15 ` Andrey Ryabinin
2015-08-24 15:44 ` Vladimir Murzin
2015-08-24 16:00 ` Andrey Ryabinin
2015-08-24 16:16 ` Vladimir Murzin
2015-08-24 16:18 ` Andrey Ryabinin [this message]
2015-08-24 17:47 ` Russell King - ARM Linux
2015-08-25 9:15 ` Will Deacon
2015-07-08 15:48 ` Catalin Marinas
2015-07-10 17:11 ` Andrey Ryabinin
2015-07-14 15:04 ` Catalin Marinas
2015-07-15 8:55 ` Andrey Ryabinin
2015-07-15 16:37 ` Catalin Marinas
2015-07-16 15:30 ` Andrey Ryabinin
2015-07-16 16:03 ` Catalin Marinas
2015-07-17 13:13 ` Andrey Ryabinin
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