Deep dives, debugging war-stories and career guidance for engineers who work where the kernel meets real hardware.
CVE AnatomyCVE-2026-99164: a DMA buffer size mismatch in the i.MX SPI driver. What the bug is, how the fix works, which kernels have it and how to check your tree.
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Tracker ReportsVendor BSP status for 14 October to 13 November 2026: which vendor kernel branches moved on the tracker, the before and after…
Deep DivesThe ktimers thread moved timer softirq work out of ksoftirqd on PREEMPT_RT. How it works, which kernels have it, and what it…
AutomotiveOn an NXP S32G3, which core gets the safety function? AUTOSAR Classic timing protection vs Linux SCHED_DEADLINE, and the boundary between them.
Kernel FeaturesLinux 7.3 adds a per-device UBI wear-levelling threshold. How to set and confirm it, which kernels reject it, and a problem in…
PatchesOn SPI NOR flash, mtdoops cannot store the kernel log during a panic. A patch series under review proposes a panic write…
TutorialsSPL verified boot on QEMU RISC-V: build SPL, sign u-boot.itb so SPL checks U-Boot, and why the public key must sit in…
CareerA reference manual is organised around the hardware, not around the task you brought to it. This post gives a three-pass method…
System DesignDoes an embedded Linux initramfs belong in your product? Compare direct root mount, a bundled initramfs and RAM-only boot, and when each…
Edge AIAn on-device LLM slows down when the kernel reclaims its weights and KV cache. What eviction costs, how restoration works, and how…
InsightsA 20-patch pin-init series merged for Linux 7.4 lets kernel Rust driver fields borrow siblings safely, replacing the runtime checks Devres imposes.
NewsGreg Kroah-Hartman picks Linux 7.3 LTS for 2026, OpenSSH fixes a musl password bypass, and OpenAI reports 948 kernel root exploits. What…
AutomotiveEB corbos Linux: what Elektrobit's documents say about its TÜV NORD assessment, how the wording changed since 2024, and what is not…
Kernel Security61 Linux kernel CVEs (1 - 7 Nov 2026) with the minimum safe version per branch - including CVE-2026-99246, CVE-2026-99270 and what…
Deep DivesA board has three time mechanisms, not one. How the Linux clocksource turns counter ticks into nanoseconds, and why sched_clock is separate.
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