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Friday June 14, 2019. 06:04 PM
The 2019 Linux Storage, Filesystem, and Memory-Management Summit included a detailed discussion about a memory-management fix that addressed one performance regression while causing another. That fix, which was promptly reverted, is still believed by most memory-management...
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Security updates have been issued by Arch Linux (gvim, lib32-openssl, openssl, and vim), Debian (dbus), Fedora (dovecot, evince, js-jquery-jstree, libxslt, php-phpmyadmin-sql-parser, and phpMyAdmin), openSUSE (neovim and rubygem-rack), Oracle (docker-engine and python),...
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Thursday June 13, 2019. 07:04 PM
If a user-space process needs to wait for some event to happen, there is a whole range of mechanisms provided by the kernel to make that easy. But calling into the kernel tends not to work well for the shortest of waits — those measured in small numbers of microseconds....
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Security updates have been issued by Fedora (firefox, kernel, kernel-headers, libreswan, python-urllib3, and vim), Red Hat (python), SUSE (sssd), and Ubuntu (dbus).
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The LWN.net Weekly Edition for June 13, 2019 is available.
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Wednesday June 12, 2019. 11:56 PM
In an offshoot of the Debian discussion we looked at last week, the Debian project has been discussing the idea of paying developers to work on the distribution. There is some history behind the idea, going back to the controversial Dunc-Tank initiative in 2006, but some...
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Security updates have been issued by Debian (libgd2, mediawiki, otrs2, vlc, and zookeeper), Fedora (containernetworking-plugins, kernel, kernel-headers, nodejs-tough-cookie, podman, python-django, and python-urllib3), openSUSE (virtualbox), SUSE (gnome-shell, libcroco, and...
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Python is, famously, a "batteries included" language; it comes with a rich standard library right out of the box, which makes for a highly useful starting point for everyone. But that does have some downsides as well. The standard library modules are largely maintained by...
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Tuesday June 11, 2019. 10:31 PM
The Matrix team has announced the first stable release of the Matrix protocol and specification across all APIs. The Synapse 1.0 reference implementation, which implements the full Matrix 1.0 API surface, has also been released. 'Now, before you get too excited, it’s...
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Interfaces for the reporting of events to user space from the kernel have been a recurring topic on the kernel mailing lists for almost as long as the kernel has existed; LWN covered one 15 years ago, for example. Numerous special-purpose event-reporting APIs exist, but...
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Stable kernels 5.1.9, 4.19.50, 4.14.125, 4.9.181, and 4.4.181 have been released. They all contain important fixes and users should upgrade.
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Security updates have been issued by CentOS (bind and thunderbird), Mageia (firefox, ghostscript, graphicsmagick, imagemagick, postgresql, and thunderbird), Oracle (kernel), Red Hat (Advanced Virtualization and rh-haproxy18-haproxy), SUSE (bind, gstreamer-0_10-plugins-base,...
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Monday June 10, 2019. 06:41 PM
BPF is probably familiar to many LWN readers, though it's likely not yet quite as well known in the Kubernetes community — but that could soon change. At KubeCon + CloudNativeCon Europe 2019 there were multiple sessions with BPF in the title where developers talked about...
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Security updates have been issued by Arch Linux (chromium and pam-u2f), Debian (cyrus-imapd), Fedora (curl, cyrus-imapd, kernel, kernel-headers, php, and vim), openSUSE (axis, bind, bubblewrap, evolution, firefox, gnome-shell, libpng16, and rmt-server), Oracle (edk2 and...
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The 5.2-rc4 kernel prepatch is out for testing. 'We've had a fairly calm release so far, and on the whole that seems to hold. rc4 isn't smaller than rc3 was (it's a bit bigger), but rc3 was fairly small, so the size increase isn't all that worrisome. I do hope that we'll...
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The 5.1.8, 4.19.49, and 4.14.124 stable kernel updates have been released; each contains another set of important fixes.
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Friday June 7, 2019. 06:56 PM
The Intel architecture allows misaligned memory access in situations where other architectures (such as ARM or RISC-V) do not. One such situation is atomic operations on memory that is split across two cache lines. This feature is largely unknown, but its impact is even less ...
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Security updates have been issued by Debian (evolution and qemu), Fedora (cyrus-imapd and hostapd), Gentoo (exim), openSUSE (exim), Red Hat (qpid-proton), SUSE (bind, libvirt, mariadb, mariadb-connector-c, python, and rubygem-rack), and Ubuntu (firefox, jinja2, and...
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Thursday June 6, 2019. 05:52 PM
In mid-May, LWN reported on the discussions in the openSUSE project over whether a separation from SUSE would be a good move. It would appear that this issue has been resolved and that openSUSE will be setting up a foundation as its new home independent of the SUSE...
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Qualys has put out an advisory on a vulnerability in the Exim mail transfer agent, versions 4.87 through 4.91; it allows for easy command execution by a local attacker and remote execution in some scenarios. 'To remotely exploit this vulnerability in the default...
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