Does Moving a GPU Server's Request Loop into the Kernel Save CPU?

Eunomia tested bpf-gpu-server, which lets eBPF and io_uring own a GPU server's TCP path so no user thread touches a request. Against an efficient epoll baseline its CPU use and latency matched; the post explains where per-request cost really goes and what actually moved the numbers.

Research · eBPF · Linux · GPU · Performance

PwnEscape: Guest-to-Host KVM Escape (CVE-2026-99999)

pwn.ai's write-up of how Vercel's $1M Sandbox challenge led to a Linux networking bug where guest-controlled checksum metadata could rewrite an IPv4 header after validation, escalating from a 32-byte host-memory disclosure to a full guest-to-host KVM escape, with the upstream fix and patch timeline.

Research · Security · Linux · Virtualization · Vulnerability Research

modern-fs-benchmark

Bartosz Fenski’s continuous benchmark suite for multi-device CoW filesystems (btrfs, ZFS, bcachefs) measures snapshot aging, compression, rebuild, ENOSPC, and other workloads classic single-disk fio tests miss.

Research · Systems Programming · Benchmarks · Open Source · Infrastructure