[PATCH] arm64: defconfig: disable CONFIG_DEVMEM

Ard Biesheuvel ard.biesheuvel at linaro.org
Fri Jan 13 03:38:30 PST 2017


On 13 January 2017 at 11:37, Leif Lindholm <leif.lindholm at linaro.org> wrote:
> /dev/mem is the opposite of what an operating system is for.
> Additionally, on arm* it opens up for denial-of-service attacks from
> userspace. So leave it disabled by default, requiring people who need
> it to enable it explicitly.
>
> Signed-off-by: Leif Lindholm <leif.lindholm at linaro.org>

Acked-by: Ard Biesheuvel <ard.biesheuvel at linaro.org>

> ---
>  arch/arm64/configs/defconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
> index 33b744d..55ba73a 100644
> --- a/arch/arm64/configs/defconfig
> +++ b/arch/arm64/configs/defconfig
> @@ -210,6 +210,7 @@ CONFIG_INPUT_HISI_POWERKEY=y
>  # CONFIG_SERIO_SERPORT is not set
>  CONFIG_SERIO_AMBAKMI=y
>  CONFIG_LEGACY_PTY_COUNT=16
> +# CONFIG_DEVMEM is not set
>  CONFIG_SERIAL_8250=y
>  CONFIG_SERIAL_8250_CONSOLE=y
>  CONFIG_SERIAL_8250_EXTENDED=y
> --
> 2.10.2
>



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