Re: [PATCH v6 0/6] KASAN for arm64

From	Mark Rutland <mark.rutland@arm.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v6 0/6] KASAN for arm64
Date	2015-10-09 11:50 +0200
Message-ID	<qhCtk-6Ne-17@gated-at.bofh.it> (permalink)
References	(4 earlier) <qhhyy-21q-37@gated-at.bofh.it> <qhibg-30J-5@gated-at.bofh.it> <qhl98-7i7-15@gated-at.bofh.it> <qhlVv-8s5-7@gated-at.bofh.it> <qhCjE-6BQ-21@gated-at.bofh.it>
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On Fri, Oct 09, 2015 at 12:32:18PM +0300, Andrey Ryabinin wrote:
[...]

> I thought the EFI stub isolation patches create a copy of mem*() functions in the stub,
> but they are just create aliases with __efistub_ prefix.
> 
> We only need to create some more aliases for KASAN.
> The following patch on top of the EFI stub isolation series works for me.
> 
> 
> Signed-off-by: Andrey Ryabinin <ryabinin.a.a@gmail.com>
> ---
>  arch/arm64/kernel/image.h | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/arch/arm64/kernel/image.h b/arch/arm64/kernel/image.h
> index e083af0..6eb8fee 100644
> --- a/arch/arm64/kernel/image.h
> +++ b/arch/arm64/kernel/image.h
> @@ -80,6 +80,12 @@ __efistub_strcmp		= __pi_strcmp;
>  __efistub_strncmp		= __pi_strncmp;
>  __efistub___flush_dcache_area	= __pi___flush_dcache_area;
>  
> +#ifdef CONFIG_KASAN
> +__efistub___memcpy		= __pi_memcpy;
> +__efistub___memmove		= __pi_memmove;
> +__efistub___memset		= __pi_memset;
> +#endif

Ard's v4 stub isolation series has these aliases [1], as the stub
requires these aliases regardless of KASAN in order to link.

Thanks,
Mark.

[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2015-October/375708.html
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Thread

Re: [PATCH v6 0/6] KASAN for arm64 Catalin Marinas <catalin.marinas@arm.com> - 2015-10-07 12:10 +0200
  Re: [PATCH v6 0/6] KASAN for arm64 Andrey Ryabinin <ryabinin.a.a@gmail.com> - 2015-10-08 12:40 +0200
    Re: [PATCH v6 0/6] KASAN for arm64 Mark Rutland <mark.rutland@arm.com> - 2015-10-08 13:10 +0200
    Re: [PATCH v6 0/6] KASAN for arm64 Mark Rutland <mark.rutland@arm.com> - 2015-10-08 13:20 +0200
      Re: [PATCH v6 0/6] KASAN for arm64 Andrey Ryabinin <ryabinin.a.a@gmail.com> - 2015-10-08 13:30 +0200
        Re: [PATCH v6 0/6] KASAN for arm64 Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2015-10-08 14:10 +0200
          Re: [PATCH v6 0/6] KASAN for arm64 Catalin Marinas <catalin.marinas@arm.com> - 2015-10-08 17:20 +0200
            Re: [PATCH v6 0/6] KASAN for arm64 Andrey Ryabinin <ryabinin.a.a@gmail.com> - 2015-10-08 18:10 +0200
              Re: [PATCH v6 0/6] KASAN for arm64 Andrey Ryabinin <ryabinin.a.a@gmail.com> - 2015-10-09 11:40 +0200
                Re: [PATCH v6 0/6] KASAN for arm64 Mark Rutland <mark.rutland@arm.com> - 2015-10-09 11:50 +0200
                Re: [PATCH v6 0/6] KASAN for arm64 Andrey Ryabinin <ryabinin.a.a@gmail.com> - 2015-10-09 12:20 +0200
                Re: [PATCH v6 0/6] KASAN for arm64 Mark Rutland <mark.rutland@arm.com> - 2015-10-09 14:50 +0200
                Re: [PATCH v6 0/6] KASAN for arm64 Andrey Ryabinin <ryabinin.a.a@gmail.com> - 2015-10-09 16:40 +0200
            Re: [PATCH v6 0/6] KASAN for arm64 Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2015-10-08 18:10 +0200

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