LWN.net
Non-uniform memory access (NUMA) systems are organized with their CPUs grouped into nodes, each of which has memory attached to it. All memory in the system is accessible from all CPUs, but memory attached to the local node is faster. The kernel's memory-policy ("mempolicy") interface allows threads to inform the kernel about how they would like...
Working on the Linux kernel has always been unlike working on many other software projects. One particularly noticeable difference is the decentralized nature of the kernel's testing infrastructure. Projects such as syzkaller, KernelCI, or the kernel self tests test the kernel in different ways. On February 28, Helen Koike posted a patch...
The 6.9.1, 6.8.10, 6.6.31, 6.1.91, 5.15.159, 5.10.217, 5.4.276, and 4.19.314 stable kernels have been released. These versions include important fixes; as usual, Greg Kroah-Hartman advises users to update right away.
The DAMON subsystem was the subject of the first session in the memory-management track at the Linux Storage, Filesystem, Memory Management, and BPF Summit. DAMON maintainer SeongJae Park introduced the data-access monitoring framework, which can generate snapshots of how memory is accessed, enabling the detection of hot and cold regions of memory...
Security updates have been issued by Fedora (chromium, firefox, and podman), Mageia (chromium-browser-stable, ghostscript, and java-1.8.0, java-11, java-17, java-latest), Red Hat (bind, Firefox, firefox, gnutls, httpd:2.4, and thunderbird), SUSE (glibc, opera, and python-Pillow), and Ubuntu (dotnet7, dotnet8, linux, linux-aws, linux-aws-5.4, linux-azure,...
Ronnie Sahlberg, Jonathan Maple, and Jeremy Allison of CiQ have published a white paper looking at the security-relevant bug fixes applied (or not applied) to the RHEL 8.x kernel over time. This means that over time, the security of the RHEL kernels get worse and worse as more issues are discovered in the upstream code and are potentially...
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