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RCU

8 articles · Page 1 of 1
Black & White Path
Black & White Path
Aug 13, 2026 · Information Security

Anthropic’s Mythos AI Reveals Linux Eventpoll Race Condition (CVE‑2026‑43074)

The article provides an in‑depth technical analysis of CVE‑2026‑43074, a use‑after‑free race condition in the Linux kernel’s eventpoll implementation, detailing how Anthropic’s Mythos AI discovered the flaw, the underlying RCU‑based fix, its impact, exploitation constraints, and recommended mitigation steps.

AI code auditCVE-2026-43074Linux kernel
0 likes · 10 min read
Anthropic’s Mythos AI Reveals Linux Eventpoll Race Condition (CVE‑2026‑43074)
DeWu Technology
DeWu Technology
Aug 21, 2023 · Backend Development

Design and Implementation of DGraph: A High‑Performance Recommendation Engine

DGraph, a C++ recommendation engine launched in 2022 for 得物, combines an index layer with a service layer, uses lock‑free RCU structures, a custom mmap‑based D‑Allocator, RoaringBitmap invert indexes, and a multi‑operator fusion scheduler to achieve high‑performance, eventually consistent, scalable recommendations.

C++IndexingMemory Management
0 likes · 12 min read
Design and Implementation of DGraph: A High‑Performance Recommendation Engine
OPPO Kernel Craftsman
OPPO Kernel Craftsman
Mar 17, 2023 · Operations

Understanding Synchronization Mechanisms and RCU in the Linux Kernel

Linux kernel synchronization requires protecting shared mutable state from concurrent access using primitives such as spinlocks, mutexes, read‑write locks, or lock‑less techniques like RCU, which copies data and waits for a grace period, each offering distinct performance, latency, and complexity trade‑offs.

Linux kernelRCUconcurrency
0 likes · 26 min read
Understanding Synchronization Mechanisms and RCU in the Linux Kernel
OPPO Kernel Craftsman
OPPO Kernel Craftsman
Apr 24, 2020 · Fundamentals

Evolution from Radix Tree to XArray in the Linux Kernel

The Linux kernel’s page‑cache indexing migrated from the classic radix‑tree structure—using shift‑based multi‑way nodes, RCU‑protected insert, lookup, and delete operations—to the newer XArray API introduced in 4.20, which retains the radix layout while offering automatic resizing, built‑in locking, richer marking, and a cleaner, safer interface.

Data StructuresLinux kernelRCU
0 likes · 17 min read
Evolution from Radix Tree to XArray in the Linux Kernel
Alibaba Cloud Developer
Alibaba Cloud Developer
Mar 13, 2020 · Databases

How HotRing Boosts In-Memory KV Store Performance by 2.58×

The article introduces HotRing, a hotspot‑aware in‑memory key‑value store from Alibaba's Tair team, explains the extreme traffic challenges of Alibaba's Double‑11 peak, details the design of ordered‑ring hashing, dynamic hotspot detection, lock‑free concurrency and rehashing, and shows how these innovations achieve up to 2.58× higher throughput than existing KV systems.

Database PerformanceHotRingLock-Free
0 likes · 16 min read
How HotRing Boosts In-Memory KV Store Performance by 2.58×