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Saturday May 18, 2019. 04:06 PM
The ever-increasing complexity of the software stacks we work with has given testing an important role. There was a recent intersection between the automated testing being done by the Yocto Project (YP) and a bug introduced into the Linux kernel that gives some insight into...
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Friday May 17, 2019. 03:36 PM
Six new stable kernels have been released: 5.1.3, 5.0.17, 4.19.44, 4.14.120, 4.9.177, and 4.4.180. As usual, they contain important fixes throughout the kernel tree; users should upgrade.
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Security updates have been issued by Debian (jquery), Fedora (kernel-headers, php-typo3-phar-stream-wrapper, and python3), openSUSE (qemu, ucode-intel, and xen), Red Hat (chromium-browser, java-1.8.0-ibm, and rh-python35-python-jinja2), SUSE (containerd, docker, docker-runc, ...
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Thursday May 16, 2019. 06:53 PM
Over the past four years, LWN has covered the Python Language Summit, but this year the Python Software Foundation (PSF) elected to go in a different direction, with coverage by A. Jesse Jiryu Davis on the PSF blog. Those reports are being gathered on a summit page; as of...
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Even with radiators and fans, a system's CPUs can overheat. When that happens, the kernel's thermal governor will cap the maximum frequency of that CPU to allow it to cool. The scheduler, however, is not aware that the CPU's capacity has changed; it may schedule more work...
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Greg Kroah-Hartman has announced the release of the 3.18.140 stable kernel. 'Note, this is the LAST 3.18.y release that I will be doing on kernel.org. I know it has been marked as End-of-Life for quite some time, but I have kept it alive due to a few million phones out there ...
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Security updates have been issued by CentOS (freeradius, kernel, libvirt, and qemu-kvm), Debian (intel-microcode, linux-4.9, and samba), Fedora (kernel, kernel-headers, memcached, microcode_ctl, php-pecl-imagick, and samba), Mageia (kernel, kernel-linus, kernel-tmb, and...
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The LWN.net Weekly Edition for May 16, 2019 is available.
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Wednesday May 15, 2019. 11:04 PM
Over the past year, Python has moved on from the benevolent dictator for life (BDFL) governance model since Guido van Rossum stepped down from that role. In February, a new steering council was elected based on the governance model that was adopted in December. At PyCon 2019 ...
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We contemplated putting together an LWN article on the 'microarchitectural data sampling' (MDS) vulnerabilities, as we've done for past speculative-execution issues. But the truth of the matter is that it's really more of the same, and there is a lot of material out there on ...
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<p> Amir Goldstein led a discussion on things that the two major network filesystems for Linux, Samba and NFS, could cooperate on at the end of day one of the 2019 Linux Storage, Filesystem, and Memory-Management Summit. In particular, are there needs that both filesystems...
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Michael Crosby is one of the most influential developers working on Docker containers today, helping to lead development of containerd as well as serving as the Open Container Initiative (OCI) Technical Oversight Chair. At DockerCon 19, Crosby led a standing-room-only...
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Security updates have been issued by Debian (drupal7, intel-microcode, kernel, and lemonldap-ng), Red Hat (kernel, kernel-rt, libvirt, qemu-kvm, qemu-kvm-rhev, redhat-virtualization-host, rhvm-appliance, vdsm, virt:rhel, and wget), Scientific Linux (wget), SUSE (containerd,...
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Here's a blog post from 'Brent' on how PHP deserves another look. 'Today I want to look at the bright side: let's focus on the things that have changed and ways to write clean and maintainable PHP code. I want to ask you to set aside any prejudice for just a few minutes....
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Tuesday May 14, 2019. 09:51 PM
A new filesystem aimed at sharing host filesystems with KVM guests, virtio-fs, was the topic of a session led by Miklos Szeredi at the 2019 Linux Storage, Filesystem, and Memory-Management Summit. The existing solution, which is based on the 9P filesystem from Plan 9, has...
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This round of kernel updates address a speculative-execution vulnerability found in all Intel processors made since 2011. Greg Kroah-Hartman says in the 5.1.2 kernel patch: 'Note, this release, and the other stable releases that are all being released right now at the same...
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The curtain has finally been lifted on the latest set of speculative-execution vulnerabilities. This one has the delightful name of ZombieLoad; it is also known as 'microarchitectural data sampling', but what's the fun in that? Various x86 processors stash data into hidden...
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The fifth and final article in Adrian Ratiu's series on eBPF delves into userspace tracing. 'In our previous parts we focused on tracing the Linux kernel, for which the eBPF-based projects are, in our humble opinion, the most safe, widely available and useful methods (eBPF...
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The planning process for the 2019 Linux Kernel and Maintainer's Summits (Lisbon, Portugal, September 9 to 12) has begun. If you have a topic that you would like to see discussed at either event, now is the time to send in a proposal to the ksummit-discuss list; click below...
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<p> Trond Myklebust and Bruce Fields led a session on some topics of interest in the NFS world at the 2019 Linux Storage, Filesystem, and Memory-Management Summit. Myklebust discussed the intersection of NFS and containers, as well adding TLS support to NFS. Fields also had...
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