[Pkg-zfsonlinux-devel] Bug#934282: zfs-dkms: fails to install for 5.2.0-2-amd64 due to GPL-only symbol 'alternatives_patched'

[Harry Sintonen]

Package: zfs-dkms
Version: 0.8.1-3
Severity: important
Tags: patch

Dear Maintainer,

The module fails to build against 5.2.0-2-amd64 due to use of GPL-only symbol:
"
  Building modules, stage 2.
  MODPOST 8 modules
FATAL: modpost: GPL-incompatible module zfs.ko uses GPL-only symbol 'alternatives_patched'
make[6]: *** [/usr/src/linux-headers-5.2.0-2-common/scripts/Makefile.modpost:91: __modpost] Error 1
"

Apparently this is due to the kernel being built with CONFIG_X86_DEBUG_FPU=Y which results
in pulling the symbol. Patch fixing this issue is here:

https://github.com/zfsonlinux/zfs/commit/095b5412b31c07cad5cec74a4eb5ace011c92b27


-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.19.0-5-amd64 (SMP w/12 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages zfs-dkms depends on:
ii  debconf [debconf-2.0]  1.5.73
ii  dkms                   2.7.1-2
ii  file                   1:5.37-5
ii  libc6-dev [libc-dev]   2.28-10
ii  libpython3-stdlib      3.7.3-1
ii  lsb-release            10.2019051400
ii  perl                   5.28.1-6
ii  python3-distutils      3.7.4-3

Versions of packages zfs-dkms recommends:
ii  linux-libc-dev  5.2.7-1
ii  zfs-zed         0.8.1-3
ii  zfsutils-linux  0.8.1-3

zfs-dkms suggests no packages.

-- debconf information:
  zfs-dkms/stop-build-for-32bit-kernel: true
* zfs-dkms/note-incompatible-licenses:
  zfs-dkms/stop-build-for-unknown-kernel: true