linux-kernel - Re: [tip: objtool/urgent] objtool: Fix seg fault with Clang non-section symbols

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Message-ID: <YCfNVhB8D73RKnKV@kroah.com>
Date:   Sat, 13 Feb 2021 14:00:06 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Xi Ruoyao <xry111@...gyan1223.wang>
Cc:     stable@...r.kernel.org, Arnd Bergmann <arnd@...nel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Miroslav Benes <mbenes@...e.cz>, x86@...nel.org,
        linux-kernel@...r.kernel.org, linux-tip-commits@...r.kernel.org
Subject: Re: [tip: objtool/urgent] objtool: Fix seg fault with Clang
 non-section symbols

On Thu, Feb 11, 2021 at 09:32:03PM +0800, Xi Ruoyao wrote:
> Hi all,
> 
> The latest GNU assembler (binutils-2.36.1) is removing unused section symbols
> like Clang [1].  So linux-5.10.15 can't be built with binutils-2.36.1 now.  It
> has been reported as https://bugzilla.kernel.org/show_bug.cgi?id=211693.
> 
> I can confirm this commit fixes the issue.  It should be cherry-picked into
> stable branches, so the following stable releases will be able to built with
> latest GNU toolchain.
> 
> [1]: https://sourceware.org/pipermail/binutils/2020-December/114671.html
> 
> At last, happy new lunar year guys :).
> 
> On 2020-12-16 13:49 +0000, tip-bot2 for Josh Poimboeuf wrote:
> > The following commit has been merged into the objtool/urgent branch of tip:
> > 
> > Commit-ID:     44f6a7c0755d8dd453c70557e11687bb080a6f21

Now queued up for 5.10.y.

If people want it in older kernels, please provide a working backport.

thanks,

greg k-h