Generate branches in kernel.git and kernel-source.git trees to match provided kernel PTFs
an idea by sleep_walker
Updated almost 6 years ago. 1 hackers ♥️. Has no hacker: grab it!

Current status

Sometimes customer report an error which occurs with kernel package provided by L3 team (which we call PTF). To do the analysis we usually need to prepare kernel source code. That usually means to go back to maintenance update tag in git repository and apply all the patches provided in the used PTF.

Idea

We could use clones of kernel.git and kernel-source.git repositories on l3slave to store used tree and make it quickly available.

It can be implemented as ptfbuild hook for kernel packages or as script calling ptfbuild.

When build of PTF is requested, project diff would be generated (usually consists of series.conf entry, added patch to tarballs, changelog entry, ...), new branch in kernel-source.git generated, patch applied and commited. For kernel.git would be generated equivalent branch with patch as well.

Expected result

With this we could provide to R&D used kernel source easily for error analysis, backporting or we could base PTFs on PTFs more quickly.

No Hackers yet

Join this project

Looking for hackers with the skills:

ptf kernel git bash

This project is part of:

Hack Week 11

Activity

  • over 10 years ago: michal-m liked this project.
  • over 10 years ago: sleep_walker added keyword "ptf" to this project.
  • over 10 years ago: sleep_walker added keyword "kernel" to this project.
  • over 10 years ago: sleep_walker added keyword "git" to this project.
  • over 10 years ago: sleep_walker added keyword "bash" to this project.
  • over 10 years ago: sleep_walker originated this project.


    • Comments

    • sleep_walker
      over 10 years ago by sleep_walker | Reply

      I discussed this with Michal Marek and redesigned whole idea. I re-formulated the idea and send proposal to L3 team.

    Similar Projects

    RISC-V emulator in GLSL capable of running Linux by favogt

    Description

    There are already numerous ways to run Linux and some programs through emulation in a web browser (e.g. x86 and riscv64 on https://bellard.org/jslinux/), but none use WebGL/WebGPU to run the emulation on the GPU.

    I already made a PoC of an AArch64 (64-bit Arm) emulator in OpenCL which is unfortunately hindered by a multitude of OpenCL compiler bugs on all platforms (Intel with beignet or the new compute runtime and AMD with Mesa Clover and rusticl). With more widespread and thus less broken GLSL vs. OpenCL and the less complex implementation requirements for RV32 (especially 32bit integers instead of 64bit), that should not be a major problem anymore.

    Goals

    Write an RISC-V system emulator in GLSL that is capable of booting Linux and run some userspace programs interactively. Ideally it is small enough to work on online test platforms like Shaderoo with a custom texture that contains bootstrap code, kernel and initrd.

    Minimum:

    riscv32 without FPU (RV32 IMA) and MMU (µClinux), running Linux in M-mode and userspace in U-mode.

    Stretch goals:

    FPU support, S-Mode support with MMU, SMP. Custom web frontend with more possibilities for I/O (disk image, network?).

    Resources

    RISC-V ISA Specifications
    Shaderoo
    OpenGL 4.5 Quick Reference Card

    Result as of Hackweek 2024

    WebGL turned out to be insufficient, it only supports OpenGL ES 3.0 but imageLoad/imageStore needs ES 3.1. So we switched directions and had to write a native C++ host for the shaders.

    As of Hackweek Friday, the kernel attempts to boot and outputs messages, but panics due to missing memory regions.

    Since then, some bugs were fixed and enough hardware emulation implemented, so that now Linux boots with framebuffer support and it's possible to log in and run programs!

    The repo with a demo video is available at https://github.com/Vogtinator/risky-v

    Officially Become a Kernel Hacker! by m.crivellari

    Description

    My studies as well my spare time are dedicated to the Linux Kernel. Currently I'm focusing on interrupts on x86_64, but my interests are not restricted to one specific topic, for now.

    I also "played" a little bit with kernel modules (ie lantern, a toy packet analyzer) and I've added a new syscall in order read from a task A, the memory of a task B.

    Maybe this will be a good chance to...

    Goals

    • create my first kernel patch

    Resources

    Achivements

    Kill DMA and DMA32 memory zones by ptesarik

    Description

    Provide a better allocator for DMA-capable buffers, making the DMA and DMA32 zones obsolete.

    Goals

    Make a PoC kernel which can boot a x86 VM and a Raspberry Pi (because early RPi4 boards have some of the weirdest DMA constraints).

    Resources

    • LPC2024 talk:
    • video:

    Model checking the BPF verifier by shunghsiyu

    Project Description

    BPF verifier plays a crucial role in securing the system (though less so now that unprivileged BPF is disabled by default in both upstream and SLES), and bugs in the verifier has lead to privilege escalation vulnerabilities in the past (e.g. CVE-2021-3490).

    One way to check whether the verifer has bugs to use model checking (a formal verification technique), in other words, build a abstract model of how the verifier operates, and then see if certain condition can occur (e.g. incorrect calculation during value tracking of registers) by giving both the model and condition to a solver.

    For the solver I will be using the Z3 SMT solver to do the checking since it provide a Python binding that's relatively easy to use.

    Goal for this Hackweek

    Learn how to use the Z3 Python binding (i.e. Z3Py) to build a model of (part of) the BPF verifier, probably the part that's related to value tracking using tristate numbers (aka tnum), and then check that the algorithm work as intended.

    Resources

    Improve various phones kernel mainline support (Qualcomm, Exynos, MediaTek) by pvorel

    Similar to previous hackweeks ( https://hackweek.opensuse.org/projects/improve-qualcomm-soc-msm8994-slash-msm8992-kernel-mainline-support, https://hackweek.opensuse.org/projects/test-mainline-kernel-on-an-older-qualcomm-soc-msm89xx-explore-mainline-kernel-qualcomm-mainlining) try to improve kernel mainline support of various phones.

    Result

    In the end I concentrated again to msm8994:

    Explore the integration between OBS and GitHub by pdostal

    Project Description

    The goals:

    1) When GitHub pull request is created or modified the OBS project will be forked and the build results reported back to GitHub. 2) When new version of the GitHub project will be published the OBS will redownload the source and rebuild the project.

    Goal for this Hackweek

    Do as much as possible, blog about it and maybe use it another existing project.

    Resources

    Port git-fixup to POSIX shell script and submit to git/git by mcepl

    Description

    https://github.com/keis/git-fixup is an exceedingly useful program, which I use daily, and I would love to every git user could bask in its awesomeness. Alas, it is a bash script, so it is not appropriate for the inclusion in git proper.

    Goals

    Port the script to plain POSIX shell and submit for consideration to git@vger.kernel.org

    Resources

    Testing and adding GNU/Linux distributions on Uyuni by juliogonzalezgil

    Join the Gitter channel! https://gitter.im/uyuni-project/hackweek

    Uyuni is a configuration and infrastructure management tool that saves you time and headaches when you have to manage and update tens, hundreds or even thousands of machines. It also manages configuration, can run audits, build image containers, monitor and much more!

    Currently there are a few distributions that are completely untested on Uyuni or SUSE Manager (AFAIK) or just not tested since a long time, and could be interesting knowing how hard would be working with them and, if possible, fix whatever is broken.

    For newcomers, the easiest distributions are those based on DEB or RPM packages. Distributions with other package formats are doable, but will require adapting the Python and Java code to be able to sync and analyze such packages (and if salt does not support those packages, it will need changes as well). So if you want a distribution with other packages, make sure you are comfortable handling such changes.

    No developer experience? No worries! We had non-developers contributors in the past, and we are ready to help as long as you are willing to learn. If you don't want to code at all, you can also help us preparing the documentation after someone else has the initial code ready, or you could also help with testing :-)

    The idea is testing Salt and Salt-ssh clients, but NOT traditional clients, which are deprecated.

    To consider that a distribution has basic support, we should cover at least (points 3-6 are to be tested for both salt minions and salt ssh minions):

    1. Reposync (this will require using spacewalk-common-channels and adding channels to the .ini file)
    2. Onboarding (salt minion from UI, salt minion from bootstrap scritp, and salt-ssh minion) (this will probably require adding OS to the bootstrap repository creator)
    3. Package management (install, remove, update...)
    4. Patching
    5. Applying any basic salt state (including a formula)
    6. Salt remote commands
    7. Bonus point: Java part for product identification, and monitoring enablement
    8. Bonus point: sumaform enablement (https://github.com/uyuni-project/sumaform)
    9. Bonus point: Documentation (https://github.com/uyuni-project/uyuni-docs)
    10. Bonus point: testsuite enablement (https://github.com/uyuni-project/uyuni/tree/master/testsuite)

    If something is breaking: we can try to fix it, but the main idea is research how supported it is right now. Beyond that it's up to each project member how much to hack :-)

    • If you don't have knowledge about some of the steps: ask the team
    • If you still don't know what to do: switch to another distribution and keep testing.

    This card is for EVERYONE, not just developers. Seriously! We had people from other teams helping that were not developers, and added support for Debian and new SUSE Linux Enterprise and openSUSE Leap versions :-)

    Pending

    FUSS

    FUSS is a complete GNU/Linux solution (server, client and desktop/standalone) based on Debian for managing an educational network.

    https://fuss.bz.it/

    Seems to be a Debian 12 derivative, so adding it could be quite easy.

    • [W] Reposync (this will require using spacewalk-common-channels and adding channels to the .ini file)
    • [W] Onboarding (salt minion from UI, salt minion from bootstrap script, and salt-ssh minion) (this will probably require adding OS to the bootstrap repository creator) --> Working for all 3 options (salt minion UI, salt minion bootstrap script and salt-ssh minion from the UI).
    • [W] Package management (install, remove, update...) --> Installing a new package works, needs to test the rest.
    • [I] Patching (if patch information is available, could require writing some code to parse it, but IIRC we have support for Ubuntu already). No patches detected. Do we support patches for Debian at all?
    • [W] Applying any basic salt state (including a formula)
    • [W] Salt remote commands
    • [ ] Bonus point: Java part for product identification, and monitoring enablement