linux-kernel - Re: [v2 PATCH] arm64: kasan: instrument user memory access API

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Message-ID: <574BF941.7090906@virtuozzo.com>
Date:	Mon, 30 May 2016 11:26:41 +0300
From:	Andrey Ryabinin <aryabinin@...tuozzo.com>
To:	Yang Shi <yang.shi@...aro.org>, <will.deacon@....com>,
	<catalin.marinas@....com>, <mark.rutland@....com>
CC:	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-mm@...ck.org>,
	<linaro-kernel@...ts.linaro.org>
Subject: Re: [v2 PATCH] arm64: kasan: instrument user memory access API


On 05/28/2016 12:01 AM, Yang Shi wrote:
> The upstream commit 1771c6e1a567ea0ba2cccc0a4ffe68a1419fd8ef
> ("x86/kasan: instrument user memory access API") added KASAN instrument to
> x86 user memory access API, so added such instrument to ARM64 too.
> 
> Define __copy_to/from_user in C in order to add kasan_check_read/write call,
> rename assembly implementation to __arch_copy_to/from_user.
> 
> Tested by test_kasan module.
> 
> Signed-off-by: Yang Shi <yang.shi@...aro.org>
> 

Acked-by: Andrey Ryabinin <aryabinin@...tuozzo.com>