[kernel-hardening] [PATCH] powerpc/kernel: Disable the latent entropy plugin unconditionally

[Andrew Donnellan]

On 27/06/16 01:34, Emese Revfy wrote:
>
> Reported-by: PaX Team <pageexec at freemail.hu>
> Signed-off-by: Emese Revfy <re.emese at gmail.com>
> ---
>  arch/powerpc/kernel/Makefile | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
> index 01935b8..e9ef44f 100644
> --- a/arch/powerpc/kernel/Makefile
> +++ b/arch/powerpc/kernel/Makefile
> @@ -14,11 +14,12 @@ CFLAGS_prom_init.o      += -fPIC
>  CFLAGS_btext.o         += -fPIC
>  endif
>
> -ifdef CONFIG_FUNCTION_TRACER
>  CFLAGS_cputable.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
>  CFLAGS_init.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)

I think you meant prom_init.o...

Additionally, DISABLE_LATENT_ENTROPY_PLUGIN is conditioned on 
CONFIG_PAX_LATENT_ENTROPY rather than CONFIG_GCC_PLUGIN_LATENT_ENTROPY, 
so it doesn't get exported correctly.

Will submit fixes along with patches to enable plugins on powerpc once I 
get that sorted.

(In future please remember to cc linuxppc-dev.)

-- 
Andrew Donnellan              OzLabs, ADL Canberra
andrew.donnellan at au1.ibm.com  IBM Australia Limited