Messages in this thread |  | | From | Kees Cook <> | Date | Tue, 4 Oct 2016 09:54:12 -0700 | Subject | Re: [PATCH v6] powerpc: Do not make the entire heap executable |
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On Mon, Oct 3, 2016 at 5:18 PM, Michael Ellerman <mpe@ellerman.id.au> wrote: > Kees Cook <keescook@chromium.org> writes: > >> On Mon, Oct 3, 2016 at 9:13 AM, Denys Vlasenko <dvlasenk@redhat.com> wrote: >>> On 32-bit powerpc the ELF PLT sections of binaries (built with --bss-plt, >>> or with a toolchain which defaults to it) look like this: > ... >>> >>> Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> >>> Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com> >>> Acked-by: Kees Cook <keescook@chromium.org> >>> Acked-by: Michael Ellerman <mpe@ellerman.id.au> >>> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> >>> CC: Paul Mackerras <paulus@samba.org> >>> CC: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> >>> CC: Kees Cook <keescook@chromium.org> >>> CC: Oleg Nesterov <oleg@redhat.com> >>> CC: Michael Ellerman <mpe@ellerman.id.au> >>> CC: Florian Weimer <fweimer@redhat.com> >>> CC: linux-mm@kvack.org >>> CC: linuxppc-dev@lists.ozlabs.org >>> CC: linux-kernel@vger.kernel.org >>> --- >>> Changes since v5: >>> * made do_brk_flags() error out if any bits other than VM_EXEC are set. >>> (Kees Cook: "With this, I'd be happy to Ack.") >>> See https://patchwork.ozlabs.org/patch/661595/ >> >> Excellent, thanks for the v6! Should this go via the ppc tree or the -mm tree? > > -mm would be best, given the diffstat I think it's less likely to > conflict if it goes via -mm.
Okay, excellent. Andrew, do you have this already in email? I think you weren't on the explicit CC from the v6...
-Kees
-- Kees Cook Nexus Security
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