linux-kernel - Re: next-20251002: S390: gcc-8-defconfig: symbol `.modinfo' required but not present

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Message-ID: <20251008113334.7407C2a-hca@linux.ibm.com>
Date: Wed, 8 Oct 2025 13:33:34 +0200
From: Heiko Carstens <hca@...ux.ibm.com>
To: Nathan Chancellor <nathan@...nel.org>
Cc: Naresh Kamboju <naresh.kamboju@...aro.org>,
        Alexey Gladkov <legion@...nel.org>, linux-s390@...r.kernel.org,
        open list <linux-kernel@...r.kernel.org>, lkft-triage@...ts.linaro.org,
        Linux Regressions <regressions@...ts.linux.dev>,
        Arnd Bergmann <arnd@...db.de>,
        Dan Carpenter <dan.carpenter@...aro.org>,
        Anders Roxell <anders.roxell@...aro.org>,
        Ben Copeland <benjamin.copeland@...aro.org>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>
Subject: Re: next-20251002: S390: gcc-8-defconfig: symbol `.modinfo' required
 but not present - no symbols

Hi Nathan,

On Tue, Oct 07, 2025 at 08:18:49PM -0700, Nathan Chancellor wrote:
> On Mon, Oct 06, 2025 at 04:41:19PM -0700, Nathan Chancellor wrote:
> ...
> > > > ### Build error log
> > > > s390x-linux-gnu-ld: .tmp_vmlinux1: warning: allocated section `.got.plt' not in segment
> > > > s390x-linux-gnu-ld: .tmp_vmlinux2: warning: allocated section `.got.plt' not in segment
> > > > s390x-linux-gnu-ld: vmlinux.unstripped: warning: allocated section `.got.plt' not in segment
> > > > s390x-linux-gnu-objcopy: vmlinux: warning: allocated section `.got.plt' not in segment
> > > > s390x-linux-gnu-objcopy: stM7JmYX: warning: allocated section `.got.plt' not in segment
> 
> So these warnings should be fixed with:

...

> I am unsure why newer binutils does not show this but I did not care
> enough to actually bisect.
> 
> > > > s390x-linux-gnu-objcopy: stM7JmYX: symbol `.modinfo' required but not present
> > > > s390x-linux-gnu-objcopy:stM7JmYX: no symbols
> 
> I did bisect binutils to figure out that commit c12d9fa2afe ("Support
> objcopy --remove-section=.relaFOO") [1] in binutils 2.32 resolves this
> error.
> 
> I can fix this for those older binutils with:
> 
> diff --git a/scripts/Makefile.vmlinux b/scripts/Makefile.vmlinux
> index 7c6ae9886f8f..9ea92c3317dc 100644
> --- a/scripts/Makefile.vmlinux
> +++ b/scripts/Makefile.vmlinux
> @@ -82,7 +82,7 @@ endif
>  # ---------------------------------------------------------------------------
>  
>  remove-section-y                                   := .modinfo
> -remove-section-$(CONFIG_ARCH_VMLINUX_NEEDS_RELOCS) += '.rel*'
> +remove-section-$(CONFIG_ARCH_VMLINUX_NEEDS_RELOCS) += '.rel*' '.rel.*'
>  
>  remove-symbols := -w --strip-symbol='__mod_device_table__*'
> 
> I can send a patch series tomorrow.

Thank you for figuring this out. Highly appreciated!