kmod broken on armhf for kernels with CONFIG_MODULE_DECOMPRESS

Package: kmod; Maintainer for kmod is (unknown); Source for kmod is src:kmod.

Reported by: David Kuehling <dvdkhlng@posteo.de>

Date: Wed, 22 Oct 2025 12:32:02 UTC

Severity: normal

Tags: debian

Found in version 34.2-2

Forwarded to https://bugs.debian.org/1099801

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From: David Kuehling <dvdkhlng@posteo.de>
To: Devuan Bug Tracking System <submit@bugs.devuan.org>
Subject: /usr/share/initramfs-tools/hooks/kmod broken on armhf for kernels
 with CONFIG_MODULE_DECOMPRESS
Date: Wed, 22 Oct 2025 12:29:47 +0000
Message-ID: <878qh3dsqx.fsf@posteo.de>
MIME-Version: 1.0
Content-Type: text/plain

Package: kmod
Version: 34.2-2
Severity: normal
File: /usr/share/initramfs-tools/hooks/kmod
X-Debbugs-Cc: debian-arm@lists.debian.org, dvdkhlng@posteo.de
User: debian-arm@lists.debian.org
Usertags: armhf

Hi,

on armhf, the initramfs-hook of kmod fails intermittently, when the
kernel is compiled with CONFIG_MODULE_DECOMPRESS.  This prevents
update-initramfs from creating any initrd images.

The failure is triggered by these lines:

          copy_exec /usr/lib/*-linux-gnu/liblzma.so.5
          copy_exec /usr/lib/*-linux-gnu/libzstd.so.1

There is no /usr/lib/*-linux-gnu directory on armhf!  The directory is
named /usr/lib/arm-linux-gnueabihf here.  Likely other Debian
architectures are affected by the same bug.

I fixed the issue for me by changing these wildcards to

          copy_exec /usr/lib/*-linux-gnu*/liblzma.so.5
          copy_exec /usr/lib/*-linux-gnu*/libzstd.so.1

Not that I really understand the implications of that change :)

cheers,

David

-- System Information:
Distributor ID:	Devuan
Description:	Devuan GNU/Linux 6 (excalibur)
Release:	6
Codename:	excalibur
Architecture: armv7l

Kernel: Linux 6.12.53-dk2 (SMP w/4 CPU threads)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en
Shell: /bin/sh linked to /usr/bin/dash
Init: sysvinit (via /sbin/init)
LSM: AppArmor: enabled

Versions of packages kmod depends on:
ii  libc6       2.41-12
ii  libkmod2    34.2-2
ii  libssl3t64  3.5.1-1+deb13u1

kmod recommends no packages.

kmod suggests no packages.

-- no debconf information

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Devuan bug report logs - #916 /usr/share/initramfs-tools/hooks/kmod broken on armhf for kernels with CONFIG_MODULE_DECOMPRESS

Devuan bug report logs - #916
/usr/share/initramfs-tools/hooks/kmod broken on armhf for kernels with CONFIG_MODULE_DECOMPRESS