linux-kernel - Re: [PATCH] arm64: vdso: Add --eh-frame-hdr to ldflags

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Message-Id: <158885881702.237249.11426070057323434764.b4-ty@kernel.org>
Date:   Thu,  7 May 2020 15:04:56 +0100
From:   Will Deacon <will@...nel.org>
To:     linux-arm-kernel@...ts.infradead.org,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        linux-kernel@...r.kernel.org
Cc:     catalin.marinas@....com, Will Deacon <will@...nel.org>,
        Tamas Zsoldos <tamas.zsoldos@....com>
Subject: Re: [PATCH] arm64: vdso: Add --eh-frame-hdr to ldflags

On Thu, 7 May 2020 11:40:49 +0100, Vincenzo Frascino wrote:
> LLVM's unwinder depends on the .eh_frame_hdr being present for
> unwinding. However, when compiling Linux with GCC, the section
> is not present in the vdso library object and when compiling
> with Clang, it is present, but it has zero length.
> 
> With GCC the problem was not spotted because libgcc unwinder does
> not require the .eh_frame_hdr section to be present.
> 
> [...]

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

[1/1] arm64: vdso: Add --eh-frame-hdr to ldflags
      https://git.kernel.org/arm64/c/7e9f5e6629f6

Cheers,
-- 
Will

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