linux-hardening - Re: [PATCH -next v3 0/2] powerpc: add support for syscall stack randomization

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Message-Id: <165909979124.253830.3036774942147857937.b4-ty@ellerman.id.au>
Date:   Fri, 29 Jul 2022 23:03:11 +1000
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     mpe@...erman.id.au, paulus@...ba.org, tglx@...utronix.de,
        npiggin@...il.com, Xiu Jianfeng <xiujianfeng@...wei.com>,
        christophe.leroy@...roup.eu, mark.rutland@....com,
        benh@...nel.crashing.org
Cc:     linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH -next v3 0/2] powerpc: add support for syscall stack randomization

On Fri, 1 Jul 2022 16:24:33 +0800, Xiu Jianfeng wrote:
> This patchset adds support for syscall stack randomization for
> powerpc, which can make harder the various stack-based attacks that
> rely on deterministic stack structure.
> 
> Changes in v3:
>   -add a lead-up patch to move system_call_exception() to syscall.c to
>   avoid disabling stack protector for all functions in interrupt.c
> Changes in v2:
>   -move choose choose_random_kstack_offset() to the end of system_call_exception
>   -allow full 6 (10) bits of entropy
>   -disable stack-protector for interrupt.c
> 
> [...]

Applied to powerpc/next.

[1/2] powerpc: Move system_call_exception() to syscall.c
      https://git.kernel.org/powerpc/c/1547db7d1f4481c1f3ec731f3edc724ef3026ede
[2/2] powerpc: add support for syscall stack randomization
      https://git.kernel.org/powerpc/c/f4a0318f278d98d9492916722e85f258c2221f88

cheers