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Restartable Sequences: A Linux Kernel Feature for Lock-Free Thread-Safe Programming

This article explores restartable sequences (rseq), a Linux kernel feature introduced in version 4.18 (circa 2018) that enables creation of thread-safe data structures without traditional locks or atomic operations, scaling efficiently to many-core microprocessors. The author not

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justine.lol·Hacker News: Front Page·8h ago·26 min read

Linux kernel patch proposes per-function "killswitch" for runtime short-circuit mitigation

Newstechnologysecurityprogramming

lwn.net22d ago

Four stable Linux kernels released with partial fixes for Dirty Frag and Copy Fail 2 vulnerabilities

Newstechnologysecurityprogramming

LWN.net23d ago

Copy Fail: Critical Linux Kernel Vulnerability (CVE-2026-31431) Grants Root Access Across Major Distributions

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xint.io1mo ago

Linux Kernel Developers Propose Removing Legacy Code in Response to LLM-Generated Security Reports

Newstechnologyprogrammingsoftware security

lwn.net1mo ago

Sashiko: Agentic Linux Kernel Code Review System for Automated Patch Evaluation

Newstechnologyprogramminglinux kernel

sashiko.dev2mo ago

Debugging eBPF Spinlock Issues in the Linux Kernel: Finding and Fixing Three Bugs

Insighttechnologyprogrammingdebugging

rovarma.com2mo ago

Linux Kernel /proc/*/mem Pseudofile: Understanding Punch Through Semantics for Unwritable Memory

This article explores the Linux kernel's /proc/*/mem pseudofile and its unique 'punch through' semantics that allow writes to succeed even when destination virtual memory is marked unwritable. The behavior is intentional and used by projects like Julia JIT compiler and rr debugge

Insighttechnologyprogrammingsystems programmingofflinemark.com·Hacker News: Front Page·2mo ago·8 min read

Understanding TCP Zero-Copy: How Linux Kernel Eliminates Data Copying Overhead

This article explains TCP zero-copy, a Linux kernel feature that eliminates extra data copying between kernel memory and userspace buffers during network data transmission. The post details how this technology works under the hood, covering the kernel mechanisms that enable zero-

technologyprogramminglinux kernelblog.tohojo.dk·Hacker News: Front Page·3mo ago·9 min read

Rockchip VDPU381 and VDPU383 Video Decoders Added to Upstream Linux Kernel

Rockchip's VDPU381 and VDPU383 video decoders have been merged into the upstream Linux kernel, providing mainline support for hardware decoding of H.264 and HEVC video formats on RK3588 and RK3576 SoCs. The article details technical challenges overcome during development, includi

Newstechnologyprogramminghardware development

collabora.com·Hacker News: Front Page·3mo ago·6 min read

Linux Kernel Development: Introducing the Swap Table for Modernized Memory Management

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lwn.net3mo ago

Challenges of Implementing Linux Kernel's READ_ONCE() and WRITE_ONCE() Macros in Rust

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lwn.net4mo ago

Analysis of TCG_TPM2_HMAC: Linux Kernel Feature for TPM Bus Security

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dlp.rip4mo ago

Linux Kernel Self-Protection Project: Addressing Security Challenges with Flexible Array Members and struct sockaddr

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lwn.net5mo ago

Asahi Linux Continues Development for Apple Silicon Support, Including M3 Compatibility and Rust Bootloader Migration

Newstechnologyprogrammingopen source development

phoronix.com7mo ago

Progress on Adding BPF Support to the GNU Toolchain

Newstechnologyprogrammingopen source development

lwn.net7mo ago

Making Linux Restartable Sequences More Accessible to Developers

The article discusses restartable sequences, a Linux kernel feature added in 2018 that improves performance for certain threaded applications. While currently used by specialized code, the article explores efforts to make this feature more accessible and mainstream for developers

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lwn.net·Hacker News: Front Page·8mo ago·10 min read

Exploiting CVE-2024-50264: Using Kernel-Hack-Drill to Overcome Linux Kernel Vulnerability Challenges

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a13xp0p0v.github.io9mo ago