Re: [OE-core] [RFC PATCH 0/5] Kernel Rust out-of-tree module support

["Mathieu Dubois-Briand" <mathieu.dubois-briand@bootlin.com>]

On Wed Nov 19, 2025 at 8:55 PM CET, Yoann Congal via lists.openembedded.org wrote:
> As followup of Harish Sadineni's RFC series "Enable rust support for
> linux kernel" [0] (and to increase its test coverage), this series add
> support for out-of-tree kernel module written in Rust as well as
> associated test.
>
> [0]: https://lists.openembedded.org/g/openembedded-core/message/226560
>
> Yoann Congal (5):
>   kernel.bbclass: Export artifacts needed for out-of-tree Rust
>     compilation
>   module.bbclass: Prepare out-of-tree rust module compilation
>   meta-skeleton: Add rust-out-of-tree-module recipe
>   rust-out-of-tree-module: Add myself as maintainer
>   runtime_test: Add rust-out-of-tree selftest
>
>  .../rust-out-of-tree-module_git.bb             | 18 ++++++++++++++++++
>  meta/classes-recipe/kernel.bbclass             | 18 ++++++++++++++++++
>  meta/classes-recipe/module.bbclass             |  8 ++++++++
>  meta/conf/distro/include/maintainers.inc       |  1 +
>  meta/lib/oeqa/selftest/cases/runtime_test.py   |  9 ++++++++-
>  5 files changed, 53 insertions(+), 1 deletion(-)
>  create mode 100644 meta-skeleton/recipes-kernel/rust-out-of-tree-module/rust-out-of-tree-module_git.bb

Hi Yoann,

I ran a few RFC series on the autobuilder, and I suspect this one of
these two issues, during oe-selftests.

First issues:

2025-11-29 08:23:13,186 - oe-selftest - INFO - 2: 6/31 214/648 (110.21s) (0 failed) (distrodata.Distrodata.test_maintainers)
2025-11-29 08:23:13,186 - oe-selftest - INFO - testtools.testresult.real._StringException: Traceback (most recent call last):
  File "/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/layers/openembedded-core/meta/lib/oeqa/selftest/cases/distrodata.py", line 115, in test_maintainers
    self.fail("""
  File "/usr/lib/python3.12/unittest/case.py", line 715, in fail
    raise self.failureException(msg)
AssertionError:
Unable to find recipes for the following entries in maintainers.inc:
rust-out-of-tree-module

I saw you added something, but for some reason the test is not happy.

Second issues:

ERROR: core-image-minimal-1.0-r0 do_rootfs: Could not invoke dnf. Command '/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/build-st-179319/tmp/work/qemuarm64-poky-linux/core-image-minimal/1.0/recipe-sysroot-native/usr/bin/dnf -v --rpmverbosity=info -y -c /srv/pokybuild/yocto-worker/oe-selftest-armhost/build/build-st-179319/tmp/work/qemuarm64-poky-linux/core-image-minimal/1.0/rootfs/etc/dnf/dnf.conf --setopt=reposdir=/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/build-st-179319/tmp/work/qemuarm64-poky-linux/core-image-minimal/1.0/rootfs/etc/yum.repos.d --installroot=/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/build-st-179319/tmp/work/qemuarm64-poky-linux/core-image-minimal/1.0/rootfs --setopt=logdir=/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/build-st-179319/tmp/work/qemuarm64-poky-linux/core-image-minimal/1.0/temp --repofrompath=oe-repo,/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/build-st-179319/tmp/work/qemuarm64-poky-linux/core-image-minimal/1.0/oe-rootfs-repo --nogpgcheck install kernel-module-rust-minimal kernel-module-rust-out-of-tree packagegroup-core-boot run-postinsts ssh-pregen-hostkeys' returned 1:
...
No match for argument: kernel-module-rust-out-of-tree
Error: Unable to find a match: kernel-module-rust-out-of-tree
kernel-module-rust-out-of-tree is neither a recipe nor a generated package.

https://autobuilder.yoctoproject.org/valkyrie/#/builders/23/builds/2915
https://autobuilder.yoctoproject.org/valkyrie/#/builders/35/builds/2777
https://autobuilder.yoctoproject.org/valkyrie/#/builders/48/builds/2672

Thanks,
Mathieu

-- 
Mathieu Dubois-Briand, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com