linux-kernel - Re: 6.4.4 breaks module-free builds of Debian kernel packages

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Date:   Fri, 21 Jul 2023 12:30:07 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Bagas Sanjaya <bagasdotme@...il.com>
Cc:     Josh Triplett <josh@...htriplett.org>,
        Nicolas Schier <nicolas@...sle.eu>,
        Sasha Levin <sashal@...nel.org>,
        Brian Lindholm <brian_lindholm@...rs.sourceforge.net>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Regressions <regressions@...ts.linux.dev>,
        Linux Stable <stable@...r.kernel.org>,
        Linux Kernel Build System <linux-kbuild@...r.kernel.org>
Subject: Re: 6.4.4 breaks module-free builds of Debian kernel packages

On Fri, Jul 21, 2023 at 12:19 PM Bagas Sanjaya <bagasdotme@...il.com> wrote:
>
> Hi,
>
> I notice a regression report on Bugzilla [1]. Quoting from it:
>
> > I'm on AMD64 with Debian testing (trixie), where I build my own kernels (with CONFIG_MODULES unset) using "make bindeb-pkg". The build proceeds through 99% of the process, but fails here:
> >
> > Kernel: arch/x86/boot/bzImage is ready  (#2)
> > make -f ./Makefile ARCH=x86     KERNELRELEASE=6.4.4-i5 intdeb-pkg
> > sh ./scripts/package/builddeb
> > ***
> > *** The present kernel configuration has modules disabled.
> > *** To use the module feature, please run "make menuconfig" etc.
> > *** to enable CONFIG_MODULES.
> > ***
> > make[5]: *** [Makefile:1969: modules_install] Error 1
> > make[4]: *** [scripts/Makefile.package:150: intdeb-pkg] Error 2
> > make[3]: *** [Makefile:1657: intdeb-pkg] Error 2
> > make[2]: *** [debian/rules:16: binary-arch] Error 2
> > dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
> > make[1]: *** [scripts/Makefile.package:139: bindeb-pkg] Error 2
> > make: *** [Makefile:1657: bindeb-pkg] Error 2
> >
> > 6.3.13 contained the same error, but I "fixed" that by moving to 6.4.3.  But alas, 6.4.4 now has the same issue.
> >
> > I worked around the issue by changing "exit 1" to "exit 0" in the main Makefile (at "modules module_install", per the attached patch), but I don't know if this is a true fix or something that simply happens to work for my particular configuration.
>
> See Bugzilla for the full thread and attached patch that ignores the error.
>
> Josh: It looks like this regression is caused by a commit of yours
> (and also 1240dabe8d58b4). Would you like to take a look on it?
>
> Anyway, I'm adding this regression to be tracked by regzbot:
>
> #regzbot introduced: 4243afdb932677 https://bugzilla.kernel.org/show_bug.cgi?id=217689
> #regzbot title: always doing modules_install breaks CONFIG_MODULES=n builds
>
> Thanks.
>
> [1]: https://bugzilla.kernel.org/show_bug.cgi?id=217689
>
> --
> An old man doll... just what I always wanted! - Clara




The following commit must be back-ported.



commit 8ae071fc216a25f4f797f33c56857f4dd6b4408e
Author: Masahiro Yamada <masahiroy@...nel.org>
Date:   Thu Jun 15 20:17:43 2023 +0900

    kbuild: make modules_install copy modules.builtin(.modinfo)









-- 
Best Regards
Masahiro Yamada