zfs-dkms FTBFS on Linux 6.10/s390x

[Paolo Pisati]

ZFS FTBFS on Linux 6.10/s390x - full build log: https://launchpadlibrarian.net/737125941/buildlog_ubuntu-oracular-s390x.linux-unstable_6.10.0-12.12_BUILDING.txt.gz

```
  CC [M] <<DKMSDIR>>/build/zfs/2.2.4/build/module/os/linux/zfs/zvol_os.o
  LD [M] <<DKMSDIR>>/build/zfs/2.2.4/build/module/spl.o
  LD [M] <<DKMSDIR>>/build/zfs/2.2.4/build/module/zfs.o
  MODPOST <<DKMSDIR>>/build/zfs/2.2.4/build/module/Module.symvers
ERROR: modpost: GPL-incompatible module zfs.ko uses GPL-only symbol 'vm_layout'
make[6]: *** [scripts/Makefile.modpost:145: <<DKMSDIR>>/build/zfs/2.2.4/build/module/Module.symvers] Error 1
make[5]: *** [<<DKMSDIR>>/headers/linux-headers-6.10.0-12-generic/Makefile:1891: modpost] Error 2
```

same issue is 100% reproducible with upstream zfs (plus the 6.10 compatiblity patches on top): https://github.com/openzfs/zfs/pull/16250#issuecomment-2202351855

[bugproxy (bugproxy)]

------- Comment on attachment From <email address hidden> 2024-07-17 11:08 EDT-------

This patch is in the queue and will address the ZFS build problem.

[Kleber Sacilotto de Souza (kleber-souza)]

Hi Vasily,

Thank you for providing a patch to fix the issue.

Is the patch available in any public git tree? Is it expected to be sent upstream for 6.11 (or even 6.10 stable)?

[Paolo Pisati (p-pisati)]

Without a clear provenance (e.g. the patch doesn't go upstream) it might look like we are just circumventing the GPL license: not an "ideal" situation.

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2024-07-17 12:24 EDT-------
The patch will probably be sent upstream for 6.11 next week, and hopefully picked up in 6.10 stable. I'll post links once they are available.

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2024-07-29 04:38 EDT-------
Merged in Linus tree

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v6.11-rc1&id=e188e5d5ffd01d484b5255b88739fcf67b300223

Also picked into the 6.10-stable tree queue

[Timo Aaltonen (tjaalton)]

this has landed in 6.10.3

[Timo Aaltonen (tjaalton)]

builds fine now
https://autopkgtest.ubuntu.com/packages/z/zfs-linux/oracular/s390x

[Frank Heimes (fheimes)]

Thanks for confirming, Timo!