Re: [PATCH v4 1/3] kasan: No KASAN's memmove check if archs don't have it.

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To: Nick Hu <nickhu@xxxxxxxxxxxxx>, glider@xxxxxxxxxx, dvyukov@xxxxxxxxxx, corbet@xxxxxxx, paul.walmsley@xxxxxxxxxx, palmer@xxxxxxxxxx, aou@xxxxxxxxxxxxxxxxx, tglx@xxxxxxxxxxxxx, gregkh@xxxxxxxxxxxxxxxxxxx, alankao@xxxxxxxxxxxxx, Anup.Patel@xxxxxxx, atish.patra@xxxxxxx, kasan-dev@xxxxxxxxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-riscv@xxxxxxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, green.hu@xxxxxxxxx
Subject: Re: [PATCH v4 1/3] kasan: No KASAN's memmove check if archs don't have it.
From: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Date: Mon, 18 Nov 2019 19:22:23 +0300
In-reply-to: <20191028024101.26655-2-nickhu@andestech.com>
References: <20191028024101.26655-1-nickhu@andestech.com> <20191028024101.26655-2-nickhu@andestech.com>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2

On 10/28/19 5:40 AM, Nick Hu wrote:
> If archs don't have memmove then the C implementation from lib/string.c is used,
> and then it's instrumented by compiler. So there is no need to add KASAN's
> memmove to manual checks.
> 
> Signed-off-by: Nick Hu <nickhu@xxxxxxxxxxxxx>
> ---

Acked-by: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>

References:
- [PATCH v4 0/3] KASAN support for RISC-V
  - From: Nick Hu
- [PATCH v4 1/3] kasan: No KASAN's memmove check if archs don't have it.
  - From: Nick Hu

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