#linux-kernel on Hacker News

The Curse of Soldered RAM(blog.hardill.me.uk)

93 points by gsky 2 days ago | 98 comments

Blog post on diagnosing faulty soldered RAM in a Lenovo X1 Carbon with Memtest86+ and working around it via the Linux memmap kernel parameter on Fedora.

Docker is weird(codeandcake.dev)

802 points by psxuaw 3 days ago | 344 comments

A blog post sharing surprising things the author learned about Docker internals while building their own container runtime, covering namespaces, cgroups, images, runc and Go.

Several Linux kernel vulnerabilities accidentally posted to public mailing list(phoronix.com)

223 points by mrkn1 4 days ago | 89 comments

Phoronix news article reporting that Trend Micro's Zero Day Initiative accidentally posted several unpatched Linux kernel vulnerability reports to the public LKML.

Corporate Linux(lpar.ath0.com)

18 points by speckx 4 days ago | 6 comments

Blog post criticizing the Linux kernel's relaxed rules on disclosing LLM-assisted patches, arguing it undermines GPL enforcement and the free software community.

Linux 7.3(lwn.net)

559 points by cjd8 7 days ago | 252 comments

LWN.net news item announcing the release of Linux kernel 7.3, quoting Linus Torvalds and listing record commit counts and notable new features.

Development statistics for the 7.2 kernel(lwn.net)

122 points by farlight 8 days ago | 101 comments

LWN article by Jonathan Corbet presenting commit and developer statistics for the Linux 7.2 kernel release, one of the busiest development cycles ever.

Linus Torvalds's first LLM-assisted patch series(lwn.net)

99 points by janvdberg 11 days ago | 59 comments

LWN brief reporting that Linus Torvalds posted a ten-patch kernel series written with LLM assistance, using RCU to speed up folio lookups for read()-heavy workloads.

Wanted to download an ISO, ended up writing a kernel exploit(blog.dfb.sh)

362 points by 0xdeafbeef 13 days ago | 180 comments

Fetching AMD SEV Reports (With Zig)(bschaatsbergen.com)

4 points by peterpanhead 14 days ago | 0 comments

A blog post on fetching AMD SEV-SNP attestation reports from a guest VM using the Zig programming language.

New CRAM method offers giant boost to compressed memory reads(tomshardware.com)

38 points by danny00 18 days ago | 18 comments

Tom's Hardware news article on CRAM, a Linux technique exposing compressed RAM via standard memory semantics instead of a block device, claiming up to 452x faster reads.

WSL3 Performance is about 5-60% faster than WSL2 depending on the workload(tonym.us)

218 points by tonymet 18 days ago | 195 comments

Blog post benchmarking WSL 2.6.3 against WSL 3.0.2 across syscalls, memory bandwidth, and Go compile workloads, comparing Linux kernels 6.6 and 6.18.

Linux containers in 500 lines of code (2016)(blog.lizzie.io)

125 points by mkornaukhov 21 days ago | 30 comments

A 2016 blog post walking through a minimal Linux container implementation in C, covering namespaces, capabilities, mounts and other isolation mechanisms.

The work by Valve's Timur Kristóf on improving old AMD GPUs on Linux(phoronix.com)

458 points by speckx 22 days ago | 92 comments

Phoronix news article on Valve developer Timur Kristóf's AMDGPU kernel driver work improving support for old GCN 1.0/1.1 AMD graphics cards on Linux, presented at XDC 2026.

Docker has always used microVMs (well since 2016)(dave.recoil.org)

38 points by avsm 22 days ago | 30 comments

Blog post by Dave Scott explaining that Docker Desktop has run containers inside microVMs with a stripped-down Linux kernel since 2016.

The Forgetful CPU (Linux on M4)(yuka.dev)

249 points by signa11 24 days ago | 168 comments

A blog post detailing how the author first booted Linux on an Apple M4 Mac mini, building on Asahi Linux work.

Greg Kroah-Hartman – Security in the LLM Age [video](youtube.com)

313 points by usernomdeguerre 24 days ago | 114 comments

YouTube video of Greg Kroah-Hartman's Kernel Recipes talk "Security in the LLM age" on Linux kernel security in the era of large language models.

Several vulnerabilities have been discovered in the Linux kernel(lwn.net)

529 points by luispa 24 days ago | 380 comments

LWN.net repost of Debian Security Advisory DSA-6528-1, a Linux kernel security update fixing numerous CVEs, dated September 29, 2026.

Page Table Memory Consumption(frn.sh)

57 points by shellpipe 25 days ago | 10 comments

Blog post by Fernando Simões examining page table memory consumption, prompted by Linus Torvalds' 2003 argument for multi-level over hashed page tables.

Zero-downtime Linux kernel zero-day mitigation via eBPF and SECCOMP(github.com)

5 points by mc493 1 month ago | 0 comments

GitHub repository with a toolkit for mitigating actively exploited Linux kernel CVEs without reboots using eBPF, module disarmament, seccomp profiles, and user namespaces.

Creepy Crawlies(people.kernel.org)

1282 points by zdw 1 month ago | 636 comments

Blog post by Konstantin Ryabitsev with numbers showing AI crawlers consume more git.kernel.org CPU rendering commits than all legitimate access combined.

Asahi Linux Progress Report: Linux 7.2(asahilinux.org)

377 points by pizzaiolo 2 months ago | 197 comments

Asahi Linux blog progress report covering developments in porting Linux to Apple Silicon Macs around the Linux 7.2 kernel release.

Google has stopped pushing Git tags for some Android source code(grapheneos.social)

737 points by Animux 2 months ago | 283 comments

GrapheneOS Mastodon post saying Google replaced Git tags for some Android source code with Google Drive downloads requested via Google Forms, violating GPLv2.

Linux 7.3 improves performance when running out of vRAM(pixelcluster.dev)

501 points by flaburgan 2 months ago | 266 comments

Blog post explaining kernel patches merged for Linux 7.3 that improve how games behave when they use more VRAM than the GPU physically has.

GhostLock, a stack-UAF that has existed in all Linux distributions for 15 years(nebusec.ai)

386 points by ranger_danger 3 months ago | 187 comments

Nebula Security research post (IonStack part II) detailing GhostLock, a stack use-after-free vulnerability present in all Linux distributions for 15 years.

Since Linux 6.9, LUKS suspend stopped wiping disk-encryption keys from memory(mathstodon.xyz)

516 points by IngoBlechschmid 3 months ago | 217 comments

Mastodon thread by Ingo Blechschmidt describing how since Linux 6.9 the LUKS suspend tool silently failed to wipe disk-encryption keys from memory.

Asahi Linux 7.1 Progress Report(asahilinux.org)

507 points by pantalaimon 3 months ago | 182 comments

Asahi Linux blog progress report for Linux 7.1, covering M3 support progress, Apple hardware bugs, and other updates.

Moving beyond fork() + exec()(lwn.net)

337 points by jwilk 4 months ago | 323 comments

LWN article by Jonathan Corbet on a proposal for kernel "spawn templates" as an alternative process-creation primitive to fork() plus exec().

Linux gaming is faster because Windows APIs are becoming Linux kernel features(xda-developers.com)

930 points by haunter 5 months ago | 571 comments

XDA Developers article explaining how Linux gaming performance is improving as Windows API behaviors are implemented as Linux kernel features.

AI is breaking two vulnerability cultures(jefftk.com)

403 points by speckx 5 months ago | 160 comments

Jeff Kaufman blog post on how AI acceleration strains both coordinated-disclosure and Linux's 'bugs are bugs' vulnerability cultures, using the Copy Fail bug as an example.

Maybe you shouldn't install new software for a bit(xeiaso.net)

813 points by psxuaw 5 months ago | 427 comments

Short blog post by Xe Iaso noting new Linux kernel vulnerabilities and advising a week-long pause on installing new software due to supply chain attack risk.

Dirtyfrag: Universal Linux LPE(openwall.com)

785 points by flipped 5 months ago | 310 comments

An oss-security mailing list post disclosing "Dirty Frag," a Linux local privilege escalation chaining two kernel bugs, released unpatched after the embargo broke.

For Linux kernel vulnerabilities, there is no heads-up to distributions(openwall.com)

565 points by ori_b 5 months ago | 477 comments

An oss-security mailing list reply from Gentoo's Sam James on CVE-2026-31431 (CopyFail), a Linux local privilege escalation, and the lack of advance notice to distributions.

Copy Fail(copy.fail)

1261 points by unsnap_biceps 5 months ago | 448 comments

Disclosure site for Copy Fail (CVE-2026-31431), a Linux kernel logic-flaw local privilege escalation exploitable by a 732-byte Python script on distros since 2017.

Asahi Linux Progress Linux 7.0(asahilinux.org)

590 points by elisaado 6 months ago | 283 comments

Asahi Linux blog progress report marking the release of Linux 7.0 and updates on Linux support for Apple Silicon Macs.

AI assistance when contributing to the Linux kernel(github.com)

484 points by hmokiguess 6 months ago | 361 comments

Linux kernel documentation file giving guidance for AI tools and developers using AI assistance when contributing to the kernel.

AWS engineer reports PostgreSQL perf halved by Linux 7.0, fix may not be easy(phoronix.com)

357 points by crcastle 6 months ago | 109 comments

Phoronix news article reporting an AWS engineer's finding that Linux 7.0 roughly halves PostgreSQL throughput, with a revert unlikely and PostgreSQL possibly needing changes.

Claude Code Found a Linux Vulnerability Hidden for 23 Years(mtlynch.io)

351 points by eichin 6 months ago | 226 comments

Blog post by Michael Lynch describing how Anthropic researcher Nicholas Carlini used Claude Code to find remotely exploitable Linux kernel bugs, including one hidden for 23 years.

Wine 11 rewrites how Linux runs Windows games at kernel with massive speed gains(xda-developers.com)

1130 points by felineflock 7 months ago | 402 comments

XDA Developers article on Wine 11 changing how Linux runs Windows games at the kernel level, with large performance gains.

Asahi Linux Progress Report: Linux 6.19(asahilinux.org)

347 points by mkurz 8 months ago | 124 comments

Asahi Linux blog post giving a progress report on Apple Silicon Linux support coinciding with the Linux 6.19 kernel release.

My insulin pump controller uses the Linux kernel. It also violates the GPL(old.reddit.com)

431 points by davisr 10 months ago | 190 comments

A Reddit r/linux post claiming an insulin pump controller runs the Linux kernel while violating the GPL; the page loaded as a Reddit network-policy block.

Meta is using the Linux scheduler designed for Valve's Steam Deck on its servers(phoronix.com)

599 points by yellow_lead 10 months ago | 318 comments

Phoronix news article reporting that Meta uses the SCX-LAVD Linux scheduler, originally built for Valve's Steam Deck, on its large servers.

Rust in the kernel is no longer experimental(lwn.net)

892 points by rascul 10 months ago | 660 comments

LWN brief reporting that kernel maintainers agreed at the Maintainers Summit that Rust in the Linux kernel is no longer experimental and is here to stay.

Same-day upstream Linux support for Snapdragon 8 Elite Gen 5(qualcomm.com)

440 points by mfilion 11 months ago | 214 comments

Qualcomm developer blog post announcing same-day upstream Linux kernel support for the Snapdragon 8 Elite Gen 5 mobile platform.

Linux Kernel Explorer(reverser.dev)

556 points by tanelpoder 11 months ago | 80 comments

A web-based explorer for browsing the Linux kernel source tree from GitHub, with a file tree and a data structures view.

The Linux Boot Process: From Power Button to Kernel(0xkato.xyz)

428 points by 0xkato 1 year ago | 84 comments

A blog post explaining the Linux boot process step by step, from pressing the power button through firmware and bootloader to the first C code in the kernel.

Entire Linux Network stack diagram (2024)(zenodo.org)

533 points by hhutw 1 year ago | 45 comments

A Zenodo poster record by Hrvoje Horvat presenting a diagram of the entire Linux network stack, from virtualization and sockets to TCP/UDP, GRO/RPS, scheduler and Netfilter.

My first contribution to Linux(vkoskiv.com)

633 points by vkoskiv 1 year ago | 76 comments

A blog post recounting the author's experience upstreaming their first Linux kernel patch, fixing a hardware issue on a 2005 Fujitsu Lifebook S2110.

Using Claude Code to modernize a 25-year-old kernel driver(dmitrybrant.com)

833 points by dmitrybrant 1 year ago | 275 comments

A blog post by Dmitry Brant describing how he used Claude Code to update an old Linux kernel driver for QIC-80 tape drives to work with modern kernels.

Why Android can't use CDC Ethernet (2023)(jordemort.dev)

325 points by goodburb 1 year ago | 130 comments

A blog post by Jordan Webb investigating, detective-style, why Android cannot use USB CDC Ethernet adapters despite supporting USB ethernet.

Beating Google's kernelCTF PoW using AVX512(anemato.de)

320 points by anematode 1 year ago | 92 comments

Blog post describing how the author used AVX512IFMA to speed up Google's kernelCTF proof-of-work and win a $51k exploit submission race.

I used o3 to find a remote zeroday in the Linux SMB implementation(sean.heelan.io)

586 points by zielmicha 1 year ago | 184 comments

Sean Heelan's blog post describing how he used OpenAI's o3 model to discover CVE-2025-37899, a remote zero-day in the Linux kernel's SMB (ksmbd) implementation.

Show HN: Rotary Phone Dial Linux Kernel Driver(gitlab.com)

327 points by sephalon 1 year ago | 47 comments

GitLab repository for a Linux kernel driver that turns a rotary phone dial into an evdev input device, with a VM-based development and test environment.

The early days of Linux (2023)(lwn.net)

422 points by stmw 1 year ago | 125 comments

LWN article by Lars Wirzenius recalling his memories of the earliest days of Linux, its creation by Linus Torvalds at the University of Helsinki, and its early growth.

Greg K-H: "Writing new code in Rust is a win for all of us"(lore.kernel.org)

608 points by mustache_kimono 1 year ago | 339 comments

Linux kernel mailing list post by Greg Kroah-Hartman arguing that writing new kernel code and drivers in Rust eliminates common C bug classes, in the Rust kernel policy thread.

I helped fix sleep-wake hangs on Linux with AMD GPUs(nyanpasu64.gitlab.io)

723 points by fanf2 1 year ago | 194 comments

A personal blog post describing how the author traced and helped fix an amdgpu driver bug causing Linux sleep-wake hangs, with the fix landing in kernel 6.14.

Asahi Linux lead developer Hector Martin resigns from Linux kernel(lkml.org)

848 points by Mond_ 1 year ago | 842 comments

LKML patch from Hector Martin removing himself as maintainer of ARM/Apple machine support in the Linux kernel, citing loss of faith in the kernel development process.

Why is my CPU usage always 100%?(downtowndougbrown.com)

505 points by pncnmnp 1 year ago | 137 comments

Part 9 of a blog series on upgrading the Chumby 8's Linux kernel from 2.6.28 to 6.x, investigating why top always reports 100% CPU usage.

An Update on Apple M1/M2 GPU Drivers(lwn.net)

568 points by MrBuddyCasino 2 years ago | 234 comments

LWN article covering Alyssa Rosenzweig's XDC 2024 talk on the status of the Rust-based Linux GPU driver for Apple M1/M2, including conformance and gaming support.

Real-time Linux is officially part of the kernel(arstechnica.com)

398 points by jonbaer 2 years ago | 118 comments

Ars Technica article reporting that the PREEMPT_RT real-time patches have been merged into the mainline Linux kernel after decades of debate.

The Linux Kernel Module Programming Guide(sysprog21.github.io)

350 points by wrycoder 2 years ago | 35 comments

Online edition of The Linux Kernel Module Programming Guide, a free book on writing Linux kernel modules, with GitHub and PDF links.

No More Blue Fridays(brendangregg.com)

457 points by moreati 2 years ago | 254 comments

Brendan Gregg blog post arguing that eBPF-based security agents would prevent kernel crashes like the July 2024 CrowdStrike Windows outage.

A Linux kernel syscall implementation tracker(syscalls.mebeim.net)

377 points by halb 2 years ago | 62 comments

An interactive table of Linux kernel syscalls per architecture and kernel version, listing numbers, symbols, source definition locations, and Kconfig options.

NVIDIA Transitions Fully Towards Open-Source Linux GPU Kernel Modules(developer.nvidia.com)

826 points by shaicoleman 2 years ago | 234 comments

NVIDIA Technical Blog post announcing the company's full transition to open-source GPU kernel modules for its Linux drivers.

No more boot loader: Please use the kernel instead(pretalx.com)

731 points by zdw 2 years ago | 385 comments

DevConf.cz 2024 talk page with embedded video proposing replacing traditional boot loaders like GRUB with the Linux kernel itself.

Remembering Larry Finger, who made Linux wireless work(arstechnica.com)

696 points by bookofjoe 2 years ago | 76 comments

Ars Technica obituary remembering Larry Finger, 84, who helped make Linux wireless drivers work and mentored other kernel developers.

What Is PID 0?(blog.dave.tf)

344 points by todsacerdoti 2 years ago | 56 comments

Blog post by David Anderson explaining what PID 0 is in Unix/Linux, why it is hidden from userspace, and its role in booting and idle scheduling.

Flipping Pages: New Linux vulnerability in nf_tables and exploitation techniques(pwning.tech)

372 points by Unroll0201 2 years ago | 102 comments

GitHub repository with a universal local privilege escalation proof-of-concept exploit for CVE-2024-1086 in Linux nf_tables, affecting kernels v5.14 to v6.6.

I turned my ThinkPad into a programmable USB device(xairy.io)

322 points by true_pk 2 years ago | 91 comments

Andrey Konovalov's blog post explaining how to enable a hidden xDCI controller on ThinkPad laptops so they can emulate USB devices from Linux.

The real realtime preemption end game(lwn.net)

440 points by chmaynard 2 years ago | 248 comments

LWN article by Jonathan Corbet on Thomas Gleixner's 2023 Linux Plumbers talk about the last remaining problem before realtime preemption lands in mainline Linux.

How fast are Linux pipes anyway? (2022)(mazzo.li)

462 points by SEJeff 3 years ago | 87 comments

Blog post exploring how Linux pipes are implemented by iteratively optimizing a pipe-based test program from 3.5GiB/s to about 65GiB/s using perf profiling.

I got robbed of my first kernel contribution(ariel-miculas.github.io)

586 points by kkapelon 3 years ago | 512 comments

Blog post by Ariel Miculas describing how his fix for a PowerPC32 gdbserver multithreaded debugging bug was submitted to the Linux kernel without proper credit.

Interactive Map of Linux Kernel(makelinux.github.io)

366 points by mr_o47 3 years ago | 25 comments

An interactive, zoomable SVG map of the Linux kernel showing its subsystems, layers, and functions with links to source code.

Linux network performance parameters(github.com)

399 points by dreampeppers99 3 years ago | 93 comments

GitHub repository explaining where Linux network sysctl variables fit into the kernel's network packet flow, aimed at performance tuning.

Making life (even) harder for proprietary modules(lwn.net)

348 points by segfaultbuserr 3 years ago | 315 comments

Article on Linux 6.6 module infrastructure changes that block proprietary drivers like NVIDIA's from using GPL-only kernel symbols.

Exploring the Internals of Linux v0.01(seiya.me)

458 points by ingve 3 years ago | 112 comments

A blog post walking through the source code and internals of Linux v0.01, the roughly 10,000-line first release of the Linux kernel.

I'm 17 and wrote this guide on how CPUs run programs(github.com)

1098 points by archmaster 3 years ago | 275 comments

GitHub repository for "Putting the You in CPU," a technical explainer by @kognise on how computers run programs from start to finish, published at cpu.land.

I booted Linux 293k times in 21 hours(rwmj.wordpress.com)

759 points by jandeboevrie 3 years ago | 250 comments

Blog post by Richard WM Jones describing booting the Linux kernel 292,612 times in 21 hours, likely to track down a kernel bug.

The Linux Kernel Module Programming Guide(sysprog21.github.io)

340 points by asicsp 3 years ago | 26 comments

Online edition of The Linux Kernel Module Programming Guide by Salzman, Burian, Pomerantz, Mottram and Huang, with GitHub source and PDF download.

Use io_uring for network I/O(developers.redhat.com)

321 points by mfiguiere 3 years ago | 109 comments

Red Hat Developer article by Donald Hunter explaining why and how to use Linux io_uring for asynchronous network I/O.