[PATCH v10 08/10] powerpc/configs: Enable STRICT_MODULE_RWX in skiroot_defconfig

[Jordan Niethe]

On Tue, Mar 30, 2021 at 4:27 PM Christophe Leroy
<christophe.leroy at csgroup.eu> wrote:
>
>
>
> Le 30/03/2021 à 06:51, Jordan Niethe a écrit :
> > From: Russell Currey <ruscur at russell.cc>
> >
> > skiroot_defconfig is the only powerpc defconfig with STRICT_KERNEL_RWX
> > enabled, and if you want memory protection for kernel text you'd want it
> > for modules too, so enable STRICT_MODULE_RWX there.
>
> Maybe we could now selectt ARCH_OPTIONAL_KERNEL_RWX_DEFAULT in arch/powerpc/Kconfig.
>
> Then this change would not be necessary.
>
> Would be in line with https://github.com/linuxppc/issues/issues/223
Yes, I think that is the way to go.
>
>
> >
> > Acked-by: Joel Stanley <joel at joel.id.au>
> > Signed-off-by: Russell Currey <ruscur at russell.cc>
> > Signed-off-by: Jordan Niethe <jniethe5 at gmail.com>
> > ---
> >   arch/powerpc/configs/skiroot_defconfig | 1 +
> >   1 file changed, 1 insertion(+)
> >
> > diff --git a/arch/powerpc/configs/skiroot_defconfig b/arch/powerpc/configs/skiroot_defconfig
> > index b806a5d3a695..50fe06cb3a31 100644
> > --- a/arch/powerpc/configs/skiroot_defconfig
> > +++ b/arch/powerpc/configs/skiroot_defconfig
> > @@ -50,6 +50,7 @@ CONFIG_CMDLINE="console=tty0 console=hvc0 ipr.fast_reboot=1 quiet"
> >   # CONFIG_PPC_MEM_KEYS is not set
> >   CONFIG_JUMP_LABEL=y
> >   CONFIG_STRICT_KERNEL_RWX=y
> > +CONFIG_STRICT_MODULE_RWX=y
> >   CONFIG_MODULES=y
> >   CONFIG_MODULE_UNLOAD=y
> >   CONFIG_MODULE_SIG_FORCE=y
> >