Science and Technology (old posts, page 241)

[$] SFrame-based stack unwinding for the kernel

The kernel's perf events subsystem can produce high-quality profiles, with full function-call chains, of resource usage within the kernel itself. Developers, however, often would like to see profiles of the whole system in one integrated report with, for example, call-stack information that crosses the boundary between the kernel and user space. Support for unwinding user-space call stacks in the perf events subsystem is currently inefficient at best. A long-running effort to provide reliable, user-space call-stack unwinding within the kernel, which will improve that situation considerably, appears to be reaching fruition.

Security updates for Friday

Security updates have been issued by AlmaLinux (gnome-remote-desktop, go-toolset:rhel8, golang, jq, kernel, kernel-rt, libxml2, and podman), Fedora (chromium, git, helix, pam, rust-blazesym-c, rust-clearscreen, rust-gitui, rust-nu-cli, rust-nu-command, rust-nu-test-support, rust-procs, rust-which, selenium-manager, sudo, thunderbird, and uv), SUSE (audiofile, chmlib-devel, docker, firefox, go1, libsoup, libsoup2, libssh, libxml2, tomcat, umoci, and xen), and Ubuntu (git and resteasy, resteasy3.0).

[$] Anubis sends AI scraperbots to a well-deserved fate

Few, if any, web sites or web-based services have gone unscathed by the locust-like hordes of AI crawlers looking to consume (and then re-consume) all of the world's content. The Anubis project is designed to provide a first line of defense that blocks mindless bots—while granting real users access to sites without too much hassle. Anubis is a young project, not even a year old. However, its development is moving quickly, and the project seems to be enjoying rapid adoption. The most recent release of Anubis, version 1.20.0, includes a feature that many users have been interested in since the project launched: support for challenging clients without requiring users to have JavaScript turned on.