This is an online course where you can learn and master the skill of low-level performance analysis and tuning.

The perfect emulation setup to study and develop the Linux kernel, kernel modules, QEMU, gem5 and x86_64, ARMv7 and ARMv8 userland and baremetal assembly, ANSI C, C++ and POSIX. GDB step debug and …

break into the debugger programmatically

A TCP port redirector for UNIX

Monitor linux processes without root permissions

Turn dynamically linked ELF binaries and libraries into self-contained closures.

Tuning Profile Delivery Mechanism for Linux

Manage filesystem snapshots and allow undo of system modifications

a featureful union filesystem

A beautiful stack trace pretty printer for C++

A CPU tool for benchmarking the peak of floating points

School UNIX course design.

A Tunnel which Turns UDP Traffic into Encrypted UDP/FakeTCP/ICMP Traffic by using Raw Socket,helps you Bypass UDP FireWalls(or Unstable UDP Environment)

eBPF-based Security Observability and Runtime Enforcement

musl libc for RISC-V

chroot, mount --bind, and binfmt_misc without privilege/setup for Linux

Portable file system cache diagnostics and control

A RISC-V bare metal example

Generic eBPF runtime

syzkaller is an unsupervised coverage-guided kernel fuzzer

《Linux内核完全剖析》linux0.12源码及实验环境

A binary hardening system

Chashell is a Go reverse shell that communicates over DNS. It can be used to bypass firewalls or tightly restricted networks.

A toolkit for building secure, portable and lean operating systems for containers

ZFS snapshotter plugin for containerd

rust riscv64 xv6 reimplementation

🦀️ Reimplement xv6-riscv in Rust!

Rust version of THU uCore OS. Linux compatible.

Build a minimal multi-tasking OS kernel for RISC-V from scratch