linux-kernel - Re: [PATCH] arm64: link with -z norelro regardless of CONFIG

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Message-Id: <160319373854.2175971.17968938488121846972.b4-ty@kernel.org>
Date:   Tue, 20 Oct 2020 18:57:10 +0100
From:   Will Deacon <will@...nel.org>
To:     Catalin Marinas <catalin.marinas@....com>,
        Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     kernel-team@...roid.com, Will Deacon <will@...nel.org>,
        linux-kernel@...r.kernel.org, Peter Smith <Peter.Smith@....com>,
        clang-built-linux <clang-built-linux@...glegroups.com>,
        stable@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Ard Biesheuvel <ardb@...nel.org>,
        Fāng-ruì Sòng <maskray@...gle.com>
Subject: Re: [PATCH] arm64: link with -z norelro regardless of CONFIG_RELOCATABLE

On Fri, 16 Oct 2020 10:53:39 -0700, Nick Desaulniers wrote:
> With CONFIG_EXPERT=y, CONFIG_KASAN=y, CONFIG_RANDOMIZE_BASE=n,
> CONFIG_RELOCATABLE=n, we observe the following failure when trying to
> link the kernel image with LD=ld.lld:
> 
> error: section: .exit.data is not contiguous with other relro sections
> 
> ld.lld defaults to -z relro while ld.bfd defaults to -z norelro. This
> was previously fixed, but only for CONFIG_RELOCATABLE=y.

Applied to arm64 (for-next/core), thanks!

[1/1] arm64: link with -z norelro regardless of CONFIG_RELOCATABLE
      https://git.kernel.org/arm64/c/3b92fa7485eb

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev