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From: Jordan Niethe <jniethe5@gmail.com>
To: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: ajd@linux.ibm.com, Joel Stanley <joel@joel.id.au>,
	Nicholas Piggin <npiggin@gmail.com>,
	cmr@codefail.de, naveen.n.rao@linux.ibm.com,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
	Daniel Axtens <dja@axtens.net>
Subject: Re: [PATCH v10 08/10] powerpc/configs: Enable STRICT_MODULE_RWX in skiroot_defconfig
Date: Wed, 21 Apr 2021 12:37:24 +1000
Message-ID: <CACzsE9p-ZaroqsShfBeoGHMeC=oS9oBgnyroxnWddHCQRve56w@mail.gmail.com> (raw)
In-Reply-To: <c511660d-64e3-30fa-9324-8019928545d5@csgroup.eu>

On Tue, Mar 30, 2021 at 4:27 PM Christophe Leroy
<christophe.leroy@csgroup.eu> wrote:
>
>
>
> Le 30/03/2021 à 06:51, Jordan Niethe a écrit :
> > From: Russell Currey <ruscur@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@joel.id.au>
> > Signed-off-by: Russell Currey <ruscur@russell.cc>
> > Signed-off-by: Jordan Niethe <jniethe5@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
> >

  reply index

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-30  4:51 [PATCH v10 00/10] powerpc: Further Strict RWX support Jordan Niethe
2021-03-30  4:51 ` [PATCH v10 01/10] powerpc/mm: Implement set_memory() routines Jordan Niethe
2021-03-30  5:16   ` Christophe Leroy
2021-04-21  2:51     ` Jordan Niethe
2021-03-31 11:16   ` Michael Ellerman
2021-03-31 12:03     ` Christophe Leroy
2021-04-21  5:03     ` Jordan Niethe
2021-04-01  4:37   ` Aneesh Kumar K.V
2021-04-21  5:19     ` Jordan Niethe
2021-03-30  4:51 ` [PATCH v10 02/10] powerpc/lib/code-patching: Set up Strict RWX patching earlier Jordan Niethe
2021-03-30  4:51 ` [PATCH v10 03/10] powerpc: Always define MODULES_{VADDR,END} Jordan Niethe
2021-03-30  5:00   ` Christophe Leroy
2021-04-01 13:36   ` Christophe Leroy
2021-04-21  2:46     ` Jordan Niethe
2021-04-21  5:14       ` Christophe Leroy
2021-04-21  5:22         ` Jordan Niethe
2021-03-30  4:51 ` [PATCH v10 04/10] powerpc/kprobes: Mark newly allocated probes as ROX Jordan Niethe
2021-03-30  5:05   ` Christophe Leroy
2021-04-21  2:39     ` Jordan Niethe
2021-03-30  4:51 ` [PATCH v10 05/10] powerpc/bpf: Write protect JIT code Jordan Niethe
2021-03-31 10:37   ` Michael Ellerman
2021-03-31 10:39     ` Christophe Leroy
2021-04-21  2:35     ` Jordan Niethe
2021-04-21  6:51       ` Michael Ellerman
2021-03-30  4:51 ` [PATCH v10 06/10] powerpc/mm/ptdump: debugfs handler for W+X checks at runtime Jordan Niethe
2021-03-31 11:24   ` Michael Ellerman
2021-04-21  2:23     ` Jordan Niethe
2021-04-21  5:16       ` Christophe Leroy
2021-03-30  4:51 ` [PATCH v10 07/10] powerpc: Set ARCH_HAS_STRICT_MODULE_RWX Jordan Niethe
2021-03-30  4:51 ` [PATCH v10 08/10] powerpc/configs: Enable STRICT_MODULE_RWX in skiroot_defconfig Jordan Niethe
2021-03-30  5:27   ` Christophe Leroy
2021-04-21  2:37     ` Jordan Niethe [this message]
2021-03-30  4:51 ` [PATCH v10 09/10] powerpc/mm: implement set_memory_attr() Jordan Niethe
2021-03-30  4:51 ` [PATCH v10 10/10] powerpc/32: use set_memory_attr() Jordan Niethe

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