linux-hardening - Re: [PATCH 2/2] arm64: defconfig: Enable PSTORE

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Message-ID: <202401111022.DAF55CF8@keescook>
Date: Thu, 11 Jan 2024 10:23:47 -0800
From: Kees Cook <keescook@...omium.org>
To: Nícolas F. R. A. Prado <nfraprado@...labora.com>
Cc: kernel@...labora.com,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Arnd Bergmann <arnd@...db.de>,
	Bjorn Andersson <quic_bjorande@...cinc.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	"Guilherme G. Piccoli" <gpiccoli@...lia.com>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Tony Luck <tony.luck@...el.com>, Will Deacon <will@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] arm64: defconfig: Enable PSTORE_RAM

On Wed, Jan 10, 2024 at 06:05:03PM -0300, Nícolas F. R. A. Prado wrote:
> Enable PSTORE_RAM, that is the ramoops driver, in the defconfig, to
> allow logging and retrieving panics and oopses to/from RAM automatically
> for platforms that have a ramoops reserved memory node in DT.
> 
> Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>

ARM maintainers, I can't speak to whether you want this defconfig change
or not, but if you do and pick it up, please feel free to also grab
patch 2.

If you don't want this, I can carry patch 2 in the pstore tree.

-Kees

> 
> ---
> 
>  arch/arm64/configs/defconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
> index d48659217bb4..0b0ef6877a12 100644
> --- a/arch/arm64/configs/defconfig
> +++ b/arch/arm64/configs/defconfig
> @@ -1589,6 +1589,7 @@ CONFIG_HUGETLBFS=y
>  CONFIG_CONFIGFS_FS=y
>  CONFIG_EFIVAR_FS=y
>  CONFIG_SQUASHFS=y
> +CONFIG_PSTORE_RAM=m
>  CONFIG_NFS_FS=y
>  CONFIG_NFS_V4=y
>  CONFIG_NFS_V4_1=y
> -- 
> 2.43.0
> 

-- 
Kees Cook