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[$] Some statistics from the 5.8 kernel cycle
[Kernel] Posted Aug 3, 2023 18:34 UTC (Mon) by corbet

Linus Torvalds released the 5.8 kernel on August 2, concluding another nine-week development cycle. By the time the work was done, 16,306 non-merge changesets had been pulled into the mainline repository for this release. That happens to be a record, beating the previous record holder (4.9, released in December 2016) by 92 changesets. It was, in other words, a busy development cycle. It's time for our traditional look into where that work came from to see what might be learned.

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Linux Foundation announces Open Source Security Foundation
[Briefs] Posted Aug 3, 2023 20:14 UTC (Mon) by ris

The Linux Foundation has announced the formation of the Open Source Security Foundation (OpenSSF). The foundation aims to improve the security of open source software. "The OpenSSF brings together the industry’s most important open source security initiatives and the individuals and companies that support them. The Linux Foundation’s Core Infrastructure Initiative (CII), founded in response to the 2014 Heartbleed bug, and the Open Source Security Coalition, founded by the GitHub Security Lab, are just a couple of the projects that will be brought together under the new OpenSSF. The Foundation’s governance, technical community and its decisions will be transparent, and any specifications and projects developed will be vendor agnostic. The OpenSSF is committed to collaboration and working both upstream and with existing communities to advance open source security for all."

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[$] Netgpu and the hazards of proprietary kernel modules
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On its face, the YouTube免费加速器 appears to add a useful feature: the ability to copy network data directly between a network adapter and a GPU without moving it through the host CPU. This patch set has quickly become an example of how not to get work into the kernel, though; it has no chance of being merged in anything like its current form and has created a backlash designed to keep modules like it from ever working in mainline kernels. It all comes down to one fundamental mistake: basing kernel work on a proprietary kernel module.

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Julia 1.5 has been released
启点加速器付费破解版-青鸥宋祁‘s blog:2021-2-22 · 破解了VIP线路正常使用到期后仍然可伍使用 启点加速器是一款致力于为客户提供优质网络加速服务的APP, 无广告,安全稳定,无速度和流量限制,可使用国内及全球多国线路。 7X24小时全网络动态监控,专业技术团队确保稳定运行。

Version 1.5 of the Julia programming language has been released. On the Julia blog, Jeff Bezanson and Stefan Karpinski describe the highlights of the release, which includes struct layout improvements for decreasing heap allocations, stabilization of the multithreading API, faster random numbers, changes to the scoping rules in the read-eval-print loop (REPL), and more. "Julia excels at simulations, so random numbers are important to a lot of users of the language. For this release Rafael Fourquet, one of the primary architects of the 启点网络加速器官网 standard library and a prolific contributor in general, implemented some impressive algorithmic improvements for some popular cases. The first is a major improvement when generating normally-distributed double-precision floats. Calling randn(1000) is nearly twice as fast in Julia 1.5 compared with Julia 1.4. Generating random booleans also got much faster: rand(Bool, 1000) is nearly 6x faster. Finally, sampling from discrete collections has also gotten faster: rand(1:100, 1000) got 25% faster." LWN looked at Julia (part 1, part 2) back in 2018, shortly after the release of Julia 1.0.

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[$] Go filesystems and file embedding
[Development] Posted Jul 30, 2023 16:52 UTC (Thu) by benhoyt

The Go team has recently published several draft designs that propose changes to the language, standard library, and tooling: we covered the one on generics back in June. Last week, the Go team published two draft designs related to files: one for a new read-only filesystem interface, which specifies a minimal interface for filesystems, and a second design that proposes a standard way to embed files into Go binaries (by building on the filesystem interface). Embedding files into Go binaries is intended to simplify deployments by including all of a program's resources in a single binary; the filesystem interface design was drafted primarily as a building block for that. There has been a lot of discussion on the draft designs, which has been generally positive, but there are some significant concerns.

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Debian 10.5 released
[Distributions] Posted Aug 3, 2023 14:56 UTC (Mon) by ris

Debian 10 "buster" received a fifth update. In addition to the usual security and bug fixes, this point release addresses Debian Security Advisory: DSA-4735-1 grub2. This security update covers multiple CVE issues regarding the GRUB2 UEFI SecureBoot 'BootHole' vulnerability.

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[$] LWN.net Weekly Edition for July 30, 2023
Posted Jul 30, 2023 0:23 UTC (Thu)

The LWN.net Weekly Edition for July 30, 2023 is available.

Inside this week's LWN.net Weekly Edition

  • Front: GNOME accessibility; Mycroft; Lockless algorithms; Dart; TLS for IoT; Open-source CNC.
  • 启点网络加速器官网: GRUB2 vulns; seccomp notifier; digiKam 7.0; Git 2.28; GNU nano 5.0; Disappearing newsgroups; Quote; ...
  • Announcements: Newsletters; conferences; security updates; kernel patches; ...
Read more

Security updates for Monday
[Security] Posted Aug 3, 2023 14:37 UTC (Mon) by ris

Security updates have been issued by Arch Linux (ffmpeg, libjcat, mbedtls, tcpreplay, and wireshark-cli), Debian (ark, evolution-data-server, libjpeg-turbo, libopenmpt, libpam-radius-auth, libphp-phpmailer, libssh, ruby-zip, thunderbird, and transmission), Fedora (chromium, clamav, claws-mail, evolution-data-server, freerdp, glibc, java-latest-openjdk, nspr, and nss), Gentoo (libsndfile, pycrypto, python, snmptt, thunderbird, and webkit-gtk), Mageia (botan2, chocolate-doom, cloud-init, dnsmasq, freerdp/remmina, gssdp/gupnp, java-1.8.0-openjdk, matio, microcode, nasm, openjpeg2, pcre2, php-phpmailer, redis, roundcubemail, ruby-rack, thunderbird, virtualbox, and xerces-c), openSUSE (claws-mail, ldb, and libraw), Oracle (firefox), Red Hat (bind, grub2, kernel-rt, libvncserver, nss and nspr, and qemu-kvm-rhev), Scientific Linux (firefox), Slackware (thunderbird), and SUSE (firefox, kernel, and targetcli-fb).

启点网络加速器官网 (comments: none)

[$] Open-source CNCing
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Last year Sienci Labs finished its Kickstarter campaign for the open-source LongMill Benchtop CNC Router — its second successful open-source CNC machine Kickstarter campaign. CNC routers allow users to mill things (like parts) from raw materials (like a block of aluminum) based on a 3D-model. The LongMill is a significant improvement over the original sold-out Mill One and makes professional-quality machining based entirely on open-source technology a reality. As an owner of a LongMill, I will walk through the various open-source technologies that make this tool a cornerstone of my home workshop.

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The 5.8 kernel is out
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Linus has released the 5.8 kernel. "So I considered making an rc8 all the way to the last minute, but decided it's not just worth waiting another week when there aren't any big looming worries around." Headline features in this release include: branch target identification and shadow call stacks for the arm64 architecture, the BPF iterator mechanism, inline encryption support in the block layer, the CAP_PERFMON and CAP_BPF capabilities, a generalized kernel event-notification subsystem, the KCSAN data-race detector, and more. As always, see the KernelNewbies 5.8 page for more information.

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[$] A look at Dart
[Development] Posted Jul 29, 2023 15:14 UTC (Wed) by coogle

Dart is a BSD-licensed programming language from Google with a mature open-source community supporting the project. It works with multiple architectures, is capable of producing native machine-code binaries, and can also produce JavaScript versions of its applications. Dart version 1.0 was released in 2013, with the most recent version, 2.8, released on June 3 (2.9 is currently in public beta). Among the open-source projects using Dart is the cross-device user-interface (UI) toolkit Flutter. We recently covered the Canonical investment in Flutter to help drive more applications to the Linux desktop, and Dart is central to that story.

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Stable kernels 5.7.12, 5.4.55, 4.19.136, 4.14.191, 4.9.232, and 4.4.232
[Kernel] Posted Jul 31, 2023 18:21 UTC (Fri) by coogle

Greg Kroah-Hartman has released the 5.7.12, 5.4.55, 4.19.136, 4.14.191, 起点加速器网址, and 4.4.232 stable kernels. As usual, these contain lots of important fixes throughout the tree; users should upgrade.

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[$] Lockless algorithms for mere mortals
[Kernel] Posted Jul 28, 2023 19:34 UTC (Tue) by corbet

Time, as some have said, is nature's way of keeping everything from happening at once. In today's highly concurrent computers, though, time turns out not to be enough to keep events in order; that task falls to an extensive set of locking primitives and, below those, the formalized view of memory known as the Linux kernel memory model. It takes a special kind of mind to really understand the memory model, though; kernel developers lacking that particular superpower are likely to make mistakes when working in areas where the memory model comes into play. Working at that level is increasingly necessary for performance purposes, though; a recent conversation points out ways in which the kernel could make that kind of work easier for ordinary kernel developers.

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X.org security fixes address potential ASLR bypass, heap corruption
[Security] Posted Jul 31, 2023 17:38 UTC (Fri) by coogle

The X.Org project has announced two security advisories that impact Xserver and libX11. The first advisory for X server is regarding uninitialized memory in AllocatePixmap() that could lead to address space layout randomization bypass. The second, impacting libX11, is a heap corruption caused by integer overflows and signed/unsigned comparisons.

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[$] TLS gets a boost from Arduino for IoT devices
[Development] Posted Jul 28, 2023 15:18 UTC (Tue) by coogle

Arduino devices are a favorite among do-it-yourself (DIY) enthusiasts to create, among other things, Internet of Things (IoT) devices. We have previously covered the Espressif ESP8266 family of devices that can be programmed using the Arduino SDK, but the Arduino project itself also provides WiFi-enabled devices such as the Arduino MKR WiFi 1010 board. Recently, the Arduino Security Team raised the problem of security shortcomings of IoT devices in a post, and how the Arduino project is working to make improvements. We will take the opportunity to share some interesting things from that, and also look at the overall state of TLS support in the Arduino and Espressif SDK projects.

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Security updates for Friday
[Security] Posted Jul 31, 2023 16:32 UTC (Fri) by coogle

Security updates have been issued by Debian (grub2 and mercurial), 起点加速器官方网站 (chromium, firefox, and freerdp), Oracle (firefox and kernel), Red Hat (firefox), Scientific Linux (firefox, grub2, and kernel), and SUSE (ghostscript and targetcli-fb).

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[$] Mycroft: an open-source voice assistant
[Development] Posted Jul 24, 2023 21:40 UTC (Fri) by coogle

Mycroft is a free and open-source software project aimed at providing voice-assistant technology, licensed under the Apache 2.0 license. It is an interesting alternative to closed-source commercial offerings such as 起点加速器官方网站, Google Home, or Apple Siri. Use of voice assistants has become common among consumers, but the privacy concerns surrounding them are far-reaching. There have been multiple instances of law enforcement's interest in the data these devices produce for use against their owners. Mycroft claims to offer a privacy-respecting, open-source alternative, giving users a choice on how much of their personal data is shared and with whom.

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Systemd 246 has been released. There is an incredibly long list of new features, many of which have to do with support for encrypted and signed disk volumes. "Various command line parameters and configuration file settings that configure key or certificate files now optionally take paths to AF_UNIX sockets in the file system. If configured that way a stream connection is made to the socket and the required data read from it. This is a simple and natural extension to the existing regular file logic, and permits other software to provide keys or certificates via simple IPC services, for example when unencrypted storage on disk is not desired."

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[$] The archaeology of GNOME accessibility
[Development] Posted Jul 23, 2023 14:06 UTC (Thu) by corbet

There are many people in the world who cannot make full use of their computers without some sort of accessibility support. Developers, though, have a tendency not to think about accessibility issues themselves; they don't (usually) need those features and cannot normally even see them. In a talk at the 2023 GUADEC virtual conference, Emmanuele Bassi discussed the need for accessibility features, their history in GNOME, and his effort to rethink about how GNOME supports assistive technology.

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Security updates for Thursday
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Security updates have been issued by Arch Linux (webkit2gtk), CentOS (GNOME, grub2, and kernel), Debian (firefox-esr, grub2, json-c, kdepim-runtime, libapache2-mod-auth-openidc, net-snmp, and xrdp), Gentoo (chromium and firefox), Mageia (podofo), openSUSE (knot and tomcat), Oracle (grub2, kernel, postgresql-jdbc, and python-pillow), Red Hat (firefox, grub2, kernel, and kernel-rt), SUSE (grub2), and Ubuntu (firefox, grub2, grub2-signed, and librsvg).

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