Vue normale

[$] Hazard pointers for the kernel

Par : corbet
27 juillet 2026 à 16:51
The kernel's read-copy-update (RCU) subsystem ensures that data will not be deleted until it is known that there are no threads holding references to it. RCU works well and is widely used throughout the kernel, but it can increase memory use and add significant delays before unused kernel objects are cleaned up. Hazard pointers are an alternative approach to lockless data updates that offers better performance, for some situations at least. The kernel community is currently considering a hazard-pointer implementation by Mathieu Desnoyers and Paul McKenney.

GNU Binutils 2.47 released

Par : jzb
27 juillet 2026 à 15:46
Version 2.47 of GNU Binutils has been released. In addition to the usual bug fixes there are some notable new features in this release including added support for a number of RISC-V standard extensions, a command-line option (-M annotate) which displays the symbol for undefined instructions for AArch64, and more. The 32-bit s390 target has been deprecated with this release.

Security updates for Monday

Par : jzb
27 juillet 2026 à 13:10
Security updates have been issued by Debian (chromium, hplip, and linux-6.1), Fedora (firefox, GitPython, google-osconfig-agent, lego, libgit2, libreswan, libwebsockets, moby-engine, p11-kit, pam, python-idna, rust-libgit2-sys, skopeo, systemd, trafficserver, webkitgtk, and xrdp), Mageia (giflib, graphite2, libnfs, vorbis-tools, wget, and yelp), Red Hat (firefox, thunderbird, and webkit2gtk3), and SUSE (amazon-ecs-init, chromedriver, ffmpeg-7, ffmpeg-8, firefox, google-osconfig-agent, gpg2, java-17-openjdk, java-25-openjdk, kernel, libsrt1_5, nginx, perl-HTTP-Date, perl-XML-Bare, proftpd, python-pyasn1, python-soupsieve, python313-astropy, python313-urwid, systemd, thunderbird, and trivy).

A Debian general resolution on LLM usage

Par : corbet
25 juillet 2026 à 23:14
The Debian project is considering a general resolution on the use of large language models in the creation of the distribution. There are three alternatives to consider: a total ban on LLM usage, rejecting LLMs "as far as practical", or explicitly allowing LLM usage subject to a set of conditions. The discussion period has just begun; the beginning of the voting period does not yet appear to have been set. Those who want to look over the discussion ahead of the inevitable LWN article can find it over here.

In remembrance of Dan Williams

Par : corbet
25 juillet 2026 à 14:29
On July 21, the kernel community lost Dan Williams, one of its most beloved contributors. Dave Hansen and Thomas Gleixner, both of whom worked with Williams extensively, have written an obituary and allowed LWN to publish it. He will be deeply missed, but he has left us with a lot to remember him by.

Security updates for Saturday

Par : corbet
25 juillet 2026 à 14:00
Security updates have been issued by AlmaLinux (compat-openssl11, java-1.8.0-openjdk, java-17-openjdk, kernel, kernel-rt, and sssd), Debian (exim4), Fedora (chromium, dotnet10.0, mbedtls, mupdf, netatalk, python-django5, skopeo, sssd, and wget1), Mageia (libevent and transmission), Oracle (.NET 8.0, 389-ds-base, aardvark-dns, acl, buildah, cifs-utils, dovecot, dracut, galera and mariadb11.8, glibc, hplip, kernel, libxml2, nginx, openexr, podman, postgresql18, rsync, thunderbird, and vim), and SUSE (389-ds, afterburn, agama, alsa, apache-commons-compress, apache-ivy, brotli-java, zstd-jni, avahi, aws-nitro-enclaves-cli, cockpit, cockpit-machines, cockpit-packages, cockpit- podman, cockpit-repos, cockpit-subscriptions, container-suseconnect, containerd, cosign, cryptsetup, curl, dash, dnsmasq, docker, docker-compose, ffmpeg, firefox, freetype2, gawk, gh, glib-networking, glib2, go1.25, go1.25-openssl, go1.26, go1.26-openssl, google-guest-agent, google-osconfig-agent, gpg2, gsasl, gstreamer-plugins-bad, gzip, haproxy, hauler, helm, helm3, ImageMagick, imagemagick, iproute2, java-11-openjdk, java-26-openjdk, jline3, joe, jq, kernel, kernel-devel, krb5, kubevirt, libgcrypt, libpng12, libqt4, libssh2_org, libXfont2, libxml2, mariadb-connector-c, microcode_ctl, multipath-tools, nasm, net-tools, nghttp2, nmap, ntfs-3g_ntfsprogs, openexr, packagekit, pam, patch, perl, perl-DBI, perl-dbi, perl-http-date, perl-libwww-perl, perl-xml-bare, php8, prometheus-ha_cluster_exporter, python-aiohttp, python-cryptography, python-dulwich, python-idna, python-maturin, python-mistune, python-msgpack, python-paramiko, python-Pillow, python-pyasn1, python-soupsieve, python-sqlparse, python-tornado, python-tornado6, python-urllib3, python313, python313-pandas, python314, qemu, radvd, rootlesskit, rpcbind, ruby3.4, runc, s390-tools, shibboleth-sp, sssd, systemd, systemd, systemd-mini, terraform-provider-aws, terraform-provider-azurerm, terraform-provider-external, terraform-provider-google, terraform-provider-helm, terraform-provider-kubernetes, terraform-provid, terraform-provider-susepubliccloud, tiff, tomcat, tomcat10, tomcat11, uriparser, vim, vorbis-tools, wget, wpa_supplicant, xwayland, and yelp).

GNU C Library 2.44 released

Par : corbet
25 juillet 2026 à 13:44
Version 2.44 of the GNU C Library has been released. Changes include a new /etc/tunables.conf file for the system-wide setting of tunable parameters, a new tunable to control the use of transparent huge pages for read-only executable segments, a number of math-function improvements, a handful of security fixes, and more.

De Vlieger: The Fedora 45 sausage factory

Par : jzb
24 juillet 2026 à 15:11

Fedora contributor Simon de Vlieger has published a blog post with a walkthrough of how the project turns source code and packages into the final release that users install on their systems.

It follows the a package from a packager's git push to a composed release: ISOs, cloud images, container images, and OSTree deployments.

The walkthrough describes how the Fedora 'sausage' is created as of Fedora 45, things change all the time; I hope to have time to update this document every cycle or every few cycles of Fedora releases so there's both history and people can find up to date information.

[$] An update on netkit and the use of BPF in user space

Par : daroc
24 juillet 2026 à 13:17

Daniel Borkmann led a session at the 2026 Linux Filesystem, Memory-Management, and BPF Summit about the progress that has been made with netkit, the subsystem that allows virtual machines (VMs) running on Linux to perform networking efficiently. When that did not fill the full time, he went on to discuss his idea for using BPF to live-patch user-space applications. While netkit is making progress, and can now support zero-copy receipt of packets into a VM in a network namespace, the idea of using BPF for patching user-space programs remains entirely speculative.

Home Assistant Device Database public preview

Par : jzb
24 juillet 2026 à 13:16

The Open Home Foundation, which governs the Home Assistant home-automation project, has announced the "public preview" of its Device Database:

Providing a public, open way to browse the anonymous, aggregated device data we collect was always part of the plan, and this preview is our first step toward it.

You can already use it to search and filter devices to see aggregated community insights, starting with a deliberately focused set of specifics, such as whether a device requires an internet connection, and which protocols and integrations it works with. We've kept that initial scope narrow on purpose, giving us a solid foundation we can build on together with you, our community, as the database grows.

LWN looked at Home Assistant in May 2025.

Security updates for Friday

Par : jzb
24 juillet 2026 à 13:05
Security updates have been issued by AlmaLinux (glibc, java-21-openjdk, kernel, and libpq), Debian (imagemagick, spice-vdagent, and webkit2gtk), Fedora (cryptlib, dotnet8.0, dotnet9.0, firefox, python-black, python-lsp-black, and python-pytokens), Mageia (apache, cifs-utils, dnsmasq, lrzip, and socat), Oracle (.NET 10.0, .NET 9.0, 389-ds-base, cups, edk2, fence-agents, firefox, freeipmi, freerdp, git-lfs, glib2, gnutls, golang, gstreamer1-plugins-bad-free, gstreamer1-plugins-good, gstreamer1-plugins-ugly-free, hplip, libinput, libvirt, libxml2, memcached, nginx, openexr, perl-DBI, perl-XML-LibXML, php, php8.4, plexus-utils, postgresql16, python3.12, python3.14, sssd, tomcat, tomcat9, unbound, vim, xorg-x11-server-Xwayland, yggdrasil, and yggdrasil-worker-package-manager), Red Hat (container-tools:rhel8, git-lfs, go-toolset:rhel8, golang, golang-github-openprinting-ipp-usb, grafana, grafana-pcp, host-metering, java-1.8.0-openjdk, java-11-openjdk with Extended Lifecycle Support, java-17-openjdk, java-21-openjdk, oci-seccomp-bpf-hook, rhc, rhc-worker-playbook, skopeo, xorg-x11-server, xorg-x11-server-Xwayland, and yggdrasil), Slackware (mozilla-thunderbird), SUSE (afterburn, alloy, apache-sshd, apache2, avahi, chromium, clamav, curl, dhcpcd, dnsmasq, docker-compose, ffmpeg-7, firefox-esr, gawk, glibc, gnutls, go1.26-openssl, google-osconfig-agent, gpg2, haproxy, ImageMagick, imagemagick, jline3, jq, kernel, libgcrypt, libgnt, meson, pidgin, nmap, nodejs24, pacemaker, patch, perl-HTML-Parser, perl-libwww-perl, perl-List-SomeUtils-XS, python-aiohttp, python-WebOb, qemu, rust-keylime, SVT-AV1, libyuv0, libaom3, trivy, ucode-intel, and wireshark), and Ubuntu (libhttp-date-perl, libxpm, linux-azure, linux-azure-fde, pam, and rsyslog).

Mourning Dan Williams

Par : corbet
23 juillet 2026 à 18:44
[Dan Williams in May 2026] I have just received the shocking news that Dan Williams, a longtime, high-profile kernel developer, has passed away. I knew him primarily through his long service on the Linux Foundation Technical Advisory Board; he was always a strong, thoughtful, and intelligent presence. Dan will be deeply missed.

There is a support effort underway for Dan's family as they come to terms with this loss.

[$] An operations structure for swap devices

Par : corbet
23 juillet 2026 à 14:25
One of the ideas raised at the 2026 Linux Storage, Filesystem, Memory Management, and BPF Summit (LSFMM+BPF) was the creation of an operations structure for the swap subsystem. Like many parts of the kernel, the swap layer evolved over time, with pieces being added as needed; the end result of this evolution is rarely what one would expect had the subsystem been designed today. The interface between the swap layer and the devices it uses is just one example. It appears that one result of the swap subsystem's evolution — the lack of an abstraction layer to interface with underlying storage — will soon be addressed, but in a different way than was initially envisioned.

Codeberg: Protecting our FLOSS commons from LLMs

Par : corbet
23 juillet 2026 à 13:27
The Codeberg forge has adopted a pair of new policies, promising not to use hosted projects to train LLMs and, more controversially, banning the hosting of LLM-generated software. The site's blog describes and justifies these policies.

Although often well intentioned, sharing the result of a prompt and calling it "libre software" does not make the world a better place. Codeberg is not and does not want to be a place to dump such generated single-use software that no one else will ever look at. We are a place for people to collaborate and improve software together. Within this context, the recent votes can be understood as a reconfirmation of those principles: As we want to center on human collaboration, we will not actively support or engage in the creation of LLMs and will not put our limited resources to use for storing single-use software that would pollute our FLOSS commons.

Security updates for Thursday

Par : jzb
23 juillet 2026 à 13:05
Security updates have been issued by AlmaLinux (acl, dogtag-pki, dovecot, glibc, go-toolset:rhel8, golang-github-openprinting-ipp-usb, grafana, grafana-pcp, httpd:2.4, javapackages-tools:201801, libtiff, mariadb-connector-c, perl-HTTP-Daemon, pki-deps:10.6, and sssd), Debian (bind9, chromium, firefox-esr, and pdns-recursor), Fedora (chromium, collectl, fractal, kernel, libssh, llvm, nginx, nginx-mod-brotli, nginx-mod-fancyindex, nginx-mod-headers-more, nginx-mod-js-challenge, nginx-mod-modsecurity, nginx-mod-naxsi, nginx-mod-vts, perl-DBI, perl-YAML-Syck, and srt), SUSE (7zip, GraphicsMagick, ImageMagick, multipath-tools, perl-YAML, python-sqlparse, python3-sqlparse, python313-bleach, and sssd), and Ubuntu (apache2, commons-beanutils, exim4, gawk, giflib, gst-plugins-good1.0, krb5, libapache-mod-jk, libarchive, libgphoto2, libhtml-parser-perl, linux-aws, linux-aws-5.15, linux-aws-fips, linux-fips, linux-ibm, linux-nvidia, linux-fips, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-oracle, linux-ibm, linux-oracle, linux-ibm-5.15, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-nvidia-tegra, linux-nvidia-tegra-igx, linux-oem-6.17, linux-oracle-6.8, python-aiohttp, and tar).
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