Language Selection

English French German Italian Portuguese Spanish

Kernel: Xen Summit, Linux Plumbers Conference, Linux KVM 'Oops' and Micron Bugs

Filed under
Linux
  • Xen Summit 2020 Pivots to a Virtual Experience

    In light of continued Covid-19 safety concerns, the 2020 XenProject Developer and Design Summit will now be held virtually on July 6-9. As our in-person event shifts to a virtual one, we are taking careful consideration to ensure the Xen Summit will continue to be a great forum to learn, connect, and grow.

    Attendees will have the ability to network, attend presentations with live Q&A, and hash out technical issues in design sessions – all virtually, from anywhere.

  • Linux Plumbers Conference: Containers and Checkpoint/Restore Microconference Accepted into 2020 Linux Plumbers Conference

    We are pleased to announce that the Containers and Checkpoint/Restore Microconference has been accepted into the 2020 Linux Plumbers Conference!

    After another successful Containers Microconference last year , there’s still a lot more work to be done. Last year we discussed the intersection between the new mount api and containers, various new vfs features including a strong and fruitful discussion about id shifting, several new security hardening aspects, and improvements when restarting syscalls during checkpoint/restore. Last year’s microconference topics led to quite a few patches that have since landed in the upstream kernel with others actively being discussed. This includes, various improvements to seccomp syscall interceptions, the implementation of a new process creation syscall, the implementation of pidfds, and the addition of time namespaces.

  • Linux KVM Virtualization Had Mistakenly Been Applying L1TF Workaround To Unaffected CPUs

    The all-important Linux Kernel-based Virtual Machine (KVM) code for open-source virtualization had mistakenly been applying its L1TF workaround for unaffected CPUs -- namely AMD EPYC CPUs -- for the past several months until the issue was uncovered this week.

    Only Intel CPUs are vulnerable to L1 Terminal Fault (L1TF) / Foreshadow, but the KVM code ended up applying L1TF workarounds to guests on unaffected processors. The change that borked KVM's L1TF handling was mainlined back in January and subsequently back-ported to the various maintained kernel branches as a "fix" thus found on the various LTS kernels currently and just not the recent 5.x kernels released this calendar year.

  • Linux Kernel Seeing Workaround Revived For Buggy Micron NAND Block Erase Behavior

    A new patch series has been revived from work originally published by Micron back in 2018 for dealing with the behavior on their planar 2D NAND devices where in rare cases when issuing block erase commands, the flash block might not actually be erased and this could lead to further problems down the road when touching said block.

    Five patches sent out today revive Micron's work in dealing with some of their legacy 2D NAND devices where when a block erase command is issued, the block erase operation completes and a pass status returned, the flash block might have not been erased. But making matters worse is that operations on said blocks could in rare cases lead to subtle failures or corruption.

Self-promotional hype

  • Safe-Linking: Making Linux exploitation harder

    Safe-Linking had the potential to block several major exploits that Check Point has investigated over the years, that turned ‘broken’ software products to ‘unexploitable’ products. “In the case of our research into smart lightbulb vulnerabilities, this would have blocked the exploit and attack.”

    While Safe-Linking is not a magic bullet that will stop all exploit attempts against modern-day heap implementations, the company says, it is another step in the right direction. “By forcing attackers to have a memory leak vulnerability before they can even start their exploit, we have raised the security bar and made exploitations harder to execute. This, in turn, helps to better protect users globally.”

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.