NewsNews
Kernel & Embedded News: Linux 7.3-rc1 Out; NVMe 2.4 Goes Post-Quantum
Linux 7.3-rc1 closes the second-busiest merge window ever. Plus UBI wear-leveling, sched_ext sub-schedulers, Qualcomm's Modular bet and NVMe 2.4.
RB Sep 1 · 15 min
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Field notes from the Linux trenches
Deep dives, debugging war-stories and career guidance for engineers who work where the kernel meets real hardware.
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Kernel SecurityKernel Security
Open-Source Device CVEs: What to Patch by Vertical (August 2026)
Open-source device CVEs for August 2026: what U-Boot, systemd and the rest of your device stack expose this month, and which packages…
RB Sep 1 · 18 min
InsightsInsights
Kernel CVEs Per Release Have Tripled. The Bugs Have Not.
Kernel CVEs per release have tripled since Linux 7.0, but the chart counts fixes, not new bugs. The release that created the…
RB Aug 31 · 11 min
Deep DivesDeep Dives
UBI on Raw NAND: The Layer That Hides Bad Blocks and Wear
How UBI works on raw NAND: LEB to PEB mapping, the 20 per 1024 bad block reserve, wear levelling, attach time and…
RB Aug 30 · 14 min
CareerCareer
Try First or Read First Is a Decision, Not a Temperament
You meet something you do not understand and decide, in about two seconds, whether to read first or try first. That decision…
RB Aug 29 · 8 min
Kernel SecurityKernel Security
Linux Kernel CVEs: What to Patch by Device (23 – 29 Aug 2026)
227 Linux kernel CVEs (23-29 Aug 2026) with the minimum safe version per branch - including CVE-2026-74752, CVE-2026-74746 and what to patch…
RB Aug 29 · 26 min
TutorialsTutorials
Real-Time Linux with PREEMPT_RT — Part 4: Writing RT-Safe User-Space Code
RT-safe user-space code for PREEMPT_RT: lock memory with mlockall, create SCHED_FIFO threads correctly, and use PTHREAD_PRIO_INHERIT mutexes.
RB Aug 28 · 12 min
InsightsInsights
Inherited a Vendor BSP? Measure These Five Things First
Inherited a vendor BSP? Use five measurements to map runtime config, mainline delta, external modules, booted device tree and Yocto layers first.
RB Aug 28 · 12 min
AutomotiveAutomotive
The State of Automotive Grade Linux in 2026: Which Release to Build
Automotive Grade Linux lists three release series on three different Yocto baselines. What the release notes show, and which branch to build.
RB Aug 27 · 13 min
Edge AIEdge AI
The Half of an AI Model the Kernel Cannot Reclaim
To the kernel, an edge model is two mappings: a reclaimable file-backed one and a tensor arena that is anonymous and cannot…
RB Aug 26 · 24 min
System DesignSystem Design
systemd vs BusyBox init: Which Init System Fits Your Device?
systemd vs BusyBox init for embedded Linux: what each one costs in size, dependencies and kernel version, and how to choose.
RB Aug 26 · 17 min
NewsNews
Linux 7.3: AF_ALG Restricted by Default, YOLOX on Etnaviv
Linux 7.3 turns on AF_ALG restriction by default, Intel proposes DRM Fabric for accelerators, and YOLOX runs on the open Etnaviv NPU…
RB Aug 25 · 10 min
Deep DivesDeep Dives
Linux genpd Power Domains: Why a Rail Won’t Power Off?
How genpd power domains decide to cut power in the Linux kernel: the checks in genpd_power_off(), the stay_on rule, and reading pm_genpd_summary.
RB Aug 25 · 18 min
InsightsInsights
Kernel Cleanup Helpers: What Your LTS Actually Has
Kernel cleanup helpers are in every LTS, but the subsystem helpers and conditional guards arrived at point releases. Check your tree, not…
RB Aug 24 · 13 min
Debug StoriesDebug Stories
Debug Story: A Circular Locking Dependency in a Driver
A lockdep circular locking dependency warning appeared with no hang. Here is how the AB-BA lock inversion between two driver mutexes was…
RB Aug 24 · 8 min
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