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LWN.net is a comprehensive source of news and opinions from and about the Linux community. This is the main LWN.net feed, listing all articles which are posted to the site front page.
업데이트: 27분 33초 지남

Kernel prepatch 4.20-rc2

월, 2018/11/12 - 9:08오전
The 4.20-rc2 kernel prepatch is out for testing. "Fairly normal week, aside from me traveling".
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Some weekend stable kernel updates

일, 2018/11/11 - 4:57오전
The 4.18.18, 4.14.80, 4.9.136, 4.4.163, and 3.18.125 stable kernel updates have all been released; each contains a relatively large set of important fixes.

The 3.18.x updates may be about to come to an end, since it is not clear that anybody is using them. "And from what I can see in the 'real world', no one is actually updating devices that rely on 3.18.y to the newer kernel releases. So I think I'm going to stop maintaining this tree soon unless someone speaks up and says 'I am using it!''

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The kernel pull-request tracker bot

토, 2018/11/10 - 2:19오전
Since the beginning, one part of the kernel-development task has been watching the mainline to see whether one's work had been merged. That is about to change with the advent of the pull-request tracker bot, which will inform maintainers when one of their pull requests has made it into the mainline. Konstantin Ryabitsev, who put this service together, plans to expand it to other trees once things have settled down.
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[$] ktask: optimizing CPU-intensive kernel work

토, 2018/11/10 - 1:21오전
As a general rule, the kernel is supposed to use the least amount of CPU time possible; any time taken by the kernel is not available for the applications the user actually wants to run. As a result, not a lot of thought has gone into optimizing the execution of kernel-side work requiring large amounts of CPU. But the kernel does occasionally have to take on CPU-intensive tasks, such as the initialization of the large amounts of memory found on current systems. The ktask subsystem posted by Daniel Jordan is an attempt to improve how the kernel handles such jobs.
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Security updates for Friday

토, 2018/11/10 - 12:17오전
Security updates have been issued by Debian (nginx), Fedora (icu, java-1.8.0-openjdk-aarch32, libgit2, php-pear-CAS, roundcubemail, and ruby), Gentoo (firefox, libX11, openssl, and python), openSUSE (thunderbird), Oracle (java-11-openjdk, kernel, and spice-server), Red Hat (java-1.8.0-ibm and thunderbird), Scientific Linux (spice-server), SUSE (curl, libepubgen, liblangtag, libmwaw, libnumbertext, libreoffice, libstaroffice, libwps, myspell-dictionaries, xmlsec1, libxkbcommon, openssh, and xorg-x11-server), and Ubuntu (pyopenssl).
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[$] iwd: simplifying WiFi management

금, 2018/11/09 - 1:57오전
It has been nearly 13 years since Jeff Garzik proclaimed that Linux was "proving its superiority in the area of crappy wireless (WiFi) support". Happily, the situation has improved somewhat since then, but that doesn't mean that things can't get better yet. During the Embedded Linux Conference portion of the 2018 Open Source Summit Europe, Marcel Holtmann described the work being done to create iwd, a new system for configuring and managing WiFi connections. If this project has its way, future users will have little room for complaint about how WiFi works on Linux systems.
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PostgreSQL 11.1, 10.6, 9.6.11, 9.5.15, 9.4.20, and 9.3.25 released

금, 2018/11/09 - 12:36오전
There is a whole new set of PostgreSQL releases out there, the main purpose of which is to include an important security fix. "Using a purpose-crafted trigger definition, an attacker can run arbitrary SQL statements with superuser privileges when a superuser runs `pg_upgrade` on the database or during a pg_dump dump/restore cycle. This attack requires a `CREATE` privilege on some non-temporary schema or a `TRIGGER` privilege on a table. This is exploitable in the default PostgreSQL configuration, where all users have `CREATE` privilege on `public` schema." Note that this is the final update for the 9.3 series; users on that version should be planning an upgrade in the near future.
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Security updates for Thursday

목, 2018/11/08 - 11:47오후
Security updates have been issued by CentOS (python-paramiko and thunderbird), Debian (firefox-esr, libdatetime-timezone-perl, and mariadb-10.0), Fedora (curl, NetworkManager, and xorg-x11-server), openSUSE (kernel), Oracle (java-1.7.0-openjdk, python-paramiko, thunderbird, and xorg-x11-server), Red Hat (java-11-openjdk and spice-server), SUSE (firefox, kernel, and SDL_image), and Ubuntu (nginx).
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[$] LWN.net Weekly Edition for November 8, 2018

목, 2018/11/08 - 9:34오전
The LWN.net Weekly Edition for November 8, 2018 is available.
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[$] A "joke" in the glibc manual

목, 2018/11/08 - 6:28오전

A "joke" in the glibc manual—targeting a topic that is, at best, sensitive—has come up for discussion on the glibc-alpha mailing list again. When we looked at the controversy in May, Richard Stallman had put his foot down and a patch removing the joke—though opinions of its amusement value vary—was reverted. Shortly after that article was published, a "cool down period" was requested (and honored), but that time has expired. Other developments in the GNU project have given some reason to believe that the time is ripe to finally purge the joke, but that may not work out any better than the last attempt.

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[$] Limiting the power of package installation in Debian

목, 2018/11/08 - 2:19오전

There is always at least a small risk when installing a package for a distribution. By its very nature, package installation is an invasive process; some packages require the ability to make radical changes to the system—changes that users surely would not want other packages to take advantage of. Packages that are made available by distributions are vetted for problems of this sort, though, of course, mistakes can be made. Third-party packages are an even bigger potential problem because they lack this vetting, as was discussed in early October on the debian-devel mailing list. Solutions in this area are not particularly easy, however.

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Security updates for Wednesday

목, 2018/11/08 - 12:42오전
Security updates have been issued by Arch Linux (ghostscript), Debian (curl), Fedora (curl, thunderbird, and zchunk), openSUSE (thunderbird), Oracle (389-ds-base, binutils, curl and nss-pem, glusterfs, gnutls, jasper, kernel, krb5, libcdio, libkdcraw, libmspack, libvirt, openssl, ovmf, python, samba, setup, sssd, wget, wpa_supplicant, xerces-c, zsh, and zziplib), Red Hat (xerces-c), SUSE (libarchive and systemd), and Ubuntu (ppp and spamassassin).
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[$] Zinc: a new kernel cryptography API

수, 2018/11/07 - 1:26오전

We looked at the WireGuard virtual private network (VPN) back in August and noted that it is built on top of a new cryptographic API being developed for the kernel, which is called Zinc. There has been some controversy about Zinc and why a brand new API was needed when the kernel already has an extensive crypto API. A recent talk by lead WireGuard developer Jason Donenfeld at Kernel Recipes 2018 would appear to be a serious attempt to reach out, engage with that question, and explain the what, how, and why of Zinc.

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Security updates for Tuesday

수, 2018/11/07 - 1:18오전
Security updates have been issued by Debian (glusterfs, gthumb, and mysql-5.5), Red Hat (389-ds-base, kernel, and xerces-c), Slackware (mariadb), SUSE (accountsservice, curl, icinga, kernel, and opensc), and Ubuntu (libxkbcommon, openssh, and ruby1.9.1, ruby2.0, ruby2.3, ruby2.5).
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[$] 4.20 Merge window part 2

화, 2018/11/06 - 2:00오전
At the end of the 4.20 merge window, 12,125 non-merge changesets had been pulled into the mainline kernel repository; 6,390 came in since last week's summary was written. As is often the case, the latter part of the merge window contained a larger portion of cleanups and fixes, but there were a number of new features in the mix as well.
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Stable kernel updates

화, 2018/11/06 - 12:57오전
Stable kernels 4.19.1, 4.18.17, and 4.14.79 have been released. As usual, there are important fixes and users should upgrade.
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Security updates for Monday

화, 2018/11/06 - 12:51오전
Security updates have been issued by Debian (curl, icecast2, mupdf, and ruby2.3), Fedora (lldpad, NetworkManager, python-django, roundcubemail, thunderbird, webkit2gtk3, xen, and xorg-x11-server), Mageia (axis, cimg, gmic, dnsmasq, gitolite, gnutls, java-1.8.0-openjdk, lighttpd, mbedtls, mediawiki, perl-Dancer2, python-cryptography, and virtualbox), Red Hat (openvswitch, Red Hat Virtualization, and thunderbird), SUSE (curl, ffmpeg, and soundtouch), and Ubuntu (network-manager and systemd).
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Kernel prepatch 4.20-rc1

월, 2018/11/05 - 10:35오후
Linus has released 4.20-rc1 and closed the merge window for this development cycle. "So I did debate calling it 5.0, but if we all help each other, I'm sure we can count to 20. It's a nice round number, and I didn't want to make a pattern of it. I think 5.0 happens next year, because then I *really* run out of fingers and toes."
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[$] SpamAssassin is back

토, 2018/11/03 - 6:35오전
The SpamAssassin 3.4.2 release was the first from that project in well over three years. At the 2018 Open Source Summit Europe, Giovanni Bechis talked about that release and those that will be coming in the near future. It would seem that, after an extended period of quiet, the SpamAssassin project is back and has rededicated itself to the task of keeping junk out of our inboxes.
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Duffy: Intro to UX design for the ChRIS Project – Part 1

토, 2018/11/03 - 6:00오전
On her blog, Máirín Duffy writes about her experiences helping design the "user experience" (UX) for the ChRIS project, which is an open-source effort aimed at medical imagery processing and distribution for hospitals and other facilities. "One of the driving reasons for ChRIS’ creation was to allow for hospitals to own and control their own data without needing to give it up to the industry. How do you apply the latest cloud-based rapid data processing technology without giving your data to one of the big cloud companies? ChRIS has been built to interface with cloud providers such as the Massachusetts Open Cloud that have consortium-based data governance that allow for users to control their own data. I want to emphasize the cloud-based computing piece here because it’s important – ChRIS allows you [to] run image processing tools at scale in the cloud, so elaborate image processing that typically days, weeks, or months to complete could be completed in minutes. For a patient, this could enable a huge positive shift in their care – rather than have to wait for days to get back results of an imaging procedure (like an MRI), they could be consulted by their doctor and make decisions about their care that day."
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