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Bug#1121154: zfs-dkms: module fails to build for Linux 6.18

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  Bug#1121154: zfs-dkms: module fails to build for Linux 6.18 Andreas Beckmann <anbe@debian.org> - 2025-11-21 22:50 +0100
    Bug#1121154: zfs-dkms: module fails to build for Linux 6.18 Stephan Seitz <stse+debianbugs@rootsland.net> - 2025-12-25 21:20 +0100
      Bug#1121154: zfs-dkms: module fails to build for Linux 6.18 Sasha Stepaniuk <sashastepan7@gmail.com> - 2025-12-26 08:00 +0100
      Bug#1121154: [Pkg-zfsonlinux-devel] Bug#1121154: zfs-dkms: module fails to build for Linux 6.18 Aron Xu <aron@debian.org> - 2025-12-27 10:30 +0100
        Bug#1121154: [Pkg-zfsonlinux-devel] Bug#1121154: zfs-dkms: module fails to build for Linux 6.18 Stephan Seitz <stse@rootsland.net> - 2025-12-28 17:30 +0100
          Bug#1121154: [Pkg-zfsonlinux-devel] Bug#1121154: zfs-dkms: module fails to build for Linux 6.18 Stephan Seitz <stse+debianbugs@rootsland.net> - 2026-01-09 19:50 +0100

#1271096 — Bug#1121154: zfs-dkms: module fails to build for Linux 6.18

Package: zfs-dkms
Version: 2.3.5-1
Severity: normal
Tags: upstream

zfs-dkms fails to build a module for Linux 6.18 in experimental:

configure: error: 
        *** Cannot build against kernel version 6.18-amd64.
        *** The maximum supported kernel version is 6.17.


Andreas

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#1275802

Package: zfs-dkms
Version: 2.3.5-2
Followup-For: Bug #1121154
X-Debbugs-Cc: debian-amd64@lists.debian.org
User: debian-amd64@lists.debian.org
Usertags: amd64
Control: tags -1 ftbfs

Dear Maintainer,

2.3.5-2 is not fixing the compiling error with kernel 6.18:

checking kernel source version... 6.18.2
/var/lib/dkms/zfs/2.3.5/build/configure: 21563: test: xyes: unexpected operator
configure: error: 
        *** Cannot build against kernel version 6.18.2.
        *** The maximum supported kernel version is 6.17.

Merry christmas,

	Stephan

-- System Information:
Debian Release: forky/sid
  APT prefers stable-security
  APT policy: (900, 'stable-security'), (900, 'oldoldstable-updates'), (900, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 6.17.13 (SMP w/8 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE
Locale: LANG=de_DE.UTF-8, LC_CTYPE= (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: sysvinit (via /sbin/init)
LSM: AppArmor: enabled

Versions of packages zfs-dkms depends on:
ii  debconf [debconf-2.0]  1.5.91
ii  dkms                   3.2.2-1
ii  file                   1:5.46-5
ii  libc6-dev [libc-dev]   2.42-6
ii  libpython3-stdlib      3.13.7-1+b1
ii  lsb-release            12.1-2

Versions of packages zfs-dkms recommends:
ii  linux-libc-dev  6.17.12-1
ii  zfs-zed         2.3.5-2
ii  zfsutils-linux  2.3.5-2

Versions of packages zfs-dkms suggests:
ii  debhelper  13.28

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

-- 
|    If your life was a horse, you'd have to shoot it.    |

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#1275831

[Multipart message — attachments visible in raw view] — view raw

С Рождеством

Чт, 25 дек. 2025 г. в 22:15, Stephan Seitz <stse+debianbugs@rootsland.net>:

> Package: zfs-dkms
> Version: 2.3.5-2
> Followup-For: Bug #1121154
> X-Debbugs-Cc: debian-amd64@lists.debian.org
> User: debian-amd64@lists.debian.org
> Usertags: amd64
> Control: tags -1 ftbfs
>
> Dear Maintainer,
>
> 2.3.5-2 is not fixing the compiling error with kernel 6.18:
>
> checking kernel source version... 6.18.2
> /var/lib/dkms/zfs/2.3.5/build/configure: 21563: test: xyes: unexpected
> operator
> configure: error:
>         *** Cannot build against kernel version 6.18.2.
>         *** The maximum supported kernel version is 6.17.
>
> Merry christmas,
>
>         Stephan
>
> -- System Information:
> Debian Release: forky/sid
>   APT prefers stable-security
>   APT policy: (900, 'stable-security'), (900, 'oldoldstable-updates'),
> (900, 'testing')
> Architecture: amd64 (x86_64)
>
> Kernel: Linux 6.17.13 (SMP w/8 CPU threads; PREEMPT)
> Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE
> Locale: LANG=de_DE.UTF-8, LC_CTYPE= (charmap=UTF-8), LANGUAGE not set
> Shell: /bin/sh linked to /usr/bin/dash
> Init: sysvinit (via /sbin/init)
> LSM: AppArmor: enabled
>
> Versions of packages zfs-dkms depends on:
> ii  debconf [debconf-2.0]  1.5.91
> ii  dkms                   3.2.2-1
> ii  file                   1:5.46-5
> ii  libc6-dev [libc-dev]   2.42-6
> ii  libpython3-stdlib      3.13.7-1+b1
> ii  lsb-release            12.1-2
>
> Versions of packages zfs-dkms recommends:
> ii  linux-libc-dev  6.17.12-1
> ii  zfs-zed         2.3.5-2
> ii  zfsutils-linux  2.3.5-2
>
> Versions of packages zfs-dkms suggests:
> ii  debhelper  13.28
>
> -- debconf information:
>   zfs-dkms/stop-build-for-32bit-kernel: true
>   zfs-dkms/stop-build-for-unknown-kernel: true
> * zfs-dkms/note-incompatible-licenses:
>
> --
> |    If your life was a horse, you'd have to shoot it.    |
>
>

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#1275967 — Bug#1121154: [Pkg-zfsonlinux-devel] Bug#1121154: zfs-dkms: module fails to build for Linux 6.18

Control: tags -1 + moreinfo

On Fri, Dec 26, 2025 at 4:15 AM Stephan Seitz
<stse+debianbugs@rootsland.net> wrote:
>
> Dear Maintainer,
>
> 2.3.5-2 is not fixing the compiling error with kernel 6.18:
>
> checking kernel source version... 6.18.2
> /var/lib/dkms/zfs/2.3.5/build/configure: 21563: test: xyes: unexpected operator
> configure: error:
>         *** Cannot build against kernel version 6.18.2.
>         *** The maximum supported kernel version is 6.17.
>

However this works for me with kernel package from experimental, would
you mind to give more detail?

Loading new zfs/2.3.5 DKMS files...
Building for 6.18-amd64

Building initial module zfs/2.3.5 for 6.18-amd64
Sign command: /lib/modules/6.18-amd64/build/scripts/sign-file
Signing key: /var/lib/dkms/mok.key
Public certificate (MOK): /var/lib/dkms/mok.pub
Certificate or key are missing, generating self signed certificate for MOK...
openssl not found, can't generate key and certificate.

Running the pre_build script................. done.
Building module(s)........... done.
Running the post_build script... done.
Installing /lib/modules/6.18-amd64/updates/dkms/zfs.ko
Installing /lib/modules/6.18-amd64/updates/dkms/spl.ko
Running depmod... done

||| Name                      Version       Architecture Description
+++-=========================-=============-============-==================================
ii  linux-headers-6.18-amd64  6.18.2-1~exp1 amd64        Header files
for Linux 6.18-amd64
ii  linux-headers-6.18-common 6.18.2-1~exp1 all          Common header
files for Linux 6.18

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#1276097 — Bug#1121154: [Pkg-zfsonlinux-devel] Bug#1121154: zfs-dkms: module fails to build for Linux 6.18

[Multipart message — attachments visible in raw view] — view raw

Hello, Aron!

Am Sa, Dez 27, 2025 at 17:26:16 +0800 schrieb Aron Xu:
>> 2.3.5-2 is not fixing the compiling error with kernel 6.18:
>>
>> checking kernel source version... 6.18.2
>> /var/lib/dkms/zfs/2.3.5/build/configure: 21563: test: xyes: unexpected operator
>> configure: error:
>>         *** Cannot build against kernel version 6.18.2.
>>         *** The maximum supported kernel version is 6.17.
>
>However this works for me with kernel package from experimental, would
>you mind to give more detail?

Well, I will attach the dkms log file, but I don’t know what more details 
I could give.
I’m compiling my own kernels from kernel.org. I don’t have problems with 
6.17.x, but with 6.18.2.

The error above mentions an unexpected operator. I’m using Testing, 
/bin/sh is a link to dash. So maybe there is an error when the versions 
are compared and the experimental flag is not properly set.

I have seen a new ZFS version in experimental. So maybe I should test the 
new one.

Many greetings,

	Stephan

-- 
|    If your life was a horse, you'd have to shoot it.    |

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#1277782 — Bug#1121154: [Pkg-zfsonlinux-devel] Bug#1121154: zfs-dkms: module fails to build for Linux 6.18

Am So, Dez 28, 2025 at 17:21:40 +0100 schrieb Stephan Seitz:
>I have seen a new ZFS version in experimental. So maybe I should test 
>the new one.

zfs 2.4.0 fixes my problem with 6.18.

Many greetings,

	Stephan

-- 
|    If your life was a horse, you'd have to shoot it.    |

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