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Message-Id: <70eb7a4c-be31-3fdd-a5b4-8075b29b3b38@au1.ibm.com>
Date: Wed, 2 Nov 2016 16:06:26 +1100
From: Andrew Donnellan <andrew.donnellan@....ibm.com>
To: kernel-hardening@...ts.openwall.com, keescook@...omium.org
Cc: mmarek@...e.com, linux-kbuild@...r.kernel.org, pageexec@...email.hu,
linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
Michael Ellerman <mpe@...erman.id.au>
Subject: Re: [PATCH] powerpc/kernel: Disable the latent
entropy plugin unconditionally
On 27/06/16 01:34, Emese Revfy wrote:
>
> Reported-by: PaX Team <pageexec@...email.hu>
> Signed-off-by: Emese Revfy <re.emese@...il.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@....ibm.com IBM Australia Limited
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