linux-kernel - Re: Regression with patch "kbuild: rpm-pkg: Generate debuginfo package manually"

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Message-ID: <20260206002412.GB2975087@ax162>
Date: Thu, 5 Feb 2026 17:24:12 -0700
From: Nathan Chancellor <nathan@...nel.org>
To: Steve French <smfrench@...il.com>
Cc: Nicolas Schier <nsc@...nel.org>, LKML <linux-kernel@...r.kernel.org>,
	Holger Kiehl <Holger.Kiehl@....de>
Subject: Re: Regression with patch "kbuild: rpm-pkg: Generate debuginfo
 package manually"

Hi Steve,

On Thu, Feb 05, 2026 at 05:56:20PM -0600, Steve French wrote:
> I noticed with the recent patch below:
> 
>     commit 62089b804895e845f82e132ea9d46a1fc53ed5a7
>     Author: Nathan Chancellor <nathan@...nel.org>
>     Date:   Wed Jan 21 15:29:15 2026 -0700
> 
>        kbuild: rpm-pkg: Generate debuginfo package manually
> 
> that all of our test builds were failing to build kernel RPMs for
> 6.19-rc8 and later (see e.g.
> http://osmb311-linux-testing.southcentralus.cloudapp.azure.com/#/builders/1/builds/99/steps/9/logs/stdio).

Sorry for the breakage :(

Can you provide me with the .config? I want to see if I can reproduce
this locally.

> See below:
> 
> Processing files: kernel-devel-6.19.0_rc8-1.x86_64
> warning: absolute symlink: /lib/modules/6.19.0-rc8/build ->
> /usr/src/kernels/6.19.0-rc8
> Provides: kernel-devel = 6.19.0_rc8-1 kernel-devel(x86-64) = 6.19.0_rc8-1
> Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1
> rpmlib(FileDigests) <= 4.6.0-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1
> Checking for unpackaged file(s): /usr/lib/rpm/check-files
> /build/cifs-2.6/rpmbuild/BUILDROOT/kernel-6.19.0_rc8-1.x86_64
> error: Installed (but unpackaged) file(s) found:
> /debuginfo.list
> /usr/lib/debug/.build-id/00/0cc2949a2b2de29e4bd4ce4aa4bf977b3f973f.debug
...
> ...
> 
> This is building kernel rpms on a RHEL9.7 system to be copied over to
> our Fedora test VMs. The kernel build works fine but the rpm packaging
> now fails. Works fine for 6.19-rc7 (or 6.19-rc8 with this commit
> reverted) but fails on 6.19-rc8.

I wonder if we are relying on something in a newer rpm version that is
not available on an older version that is present in RHEL.

> Any idea how to fix this build regression.

Opting out of the debuginfo package with RPM_OPTS='--without debuginfo'
would be a quick solution I think but obviously I would like to develop
a more comprehensive fix.

Cheers,
Nathan