Linux Kernel Research

My journey learning Linux kernel internals and contributing upstream.

👤 About

Focus: Memory Management, Cgroups, OOM Killer
Current Kernel: 6.18
Started: December 2025

🎯 Goals

• Understand memory management subsystem
• Reproduce and fix bugs
• Submit 5 patches upstream
• Deep dive into 5 subsystems

📚 Subsystems Explored

Subsystem	Progress	Status
Memory Management	60%	🟢 Active
Cgroups	40%	🟢 Active
Process Management	10%	🟡 Learning
Filesystem (VFS)	5%	🟡 Learning
Networking	0%	⚪ Planned

🐛 Bugs Tracked

Bug	Status	Subsystem	Version
#001 OOM Race	✅ Reproduced	MM	2.6.38

📝 Recent Activity

2025-01-15: Analyzed OOM killer in 6.18
2025-01-14: Traced cgroup creation at boot
2025-01-13: Reproduced 2.6.38 OOM bug

Full Log

🧪 Experiments

• Total: 2
• This Month: 2
• Latest: Memcg OOM Trigger

🔧 Patches

• Submitted: 10
• Accepted: updating
• In Review: updating
• In Progress: updating

Patch Status

🚀 Quick Links

• Setup Guide
• Memory Management
• Cgroups
• OOM Killer
• Bug Index
• Tools

📊 Stats

Kernels Analyzed:     4 (2.6.38, 3.10, 4.19, 6.18)
Subsystems:           5
Code Files Read:      156
Lines of Code:        ~15,000
Experiments:          
Dmesg Logs:           
Bugs Reproduced:      
Patches Submitted:    

📖 Learning Path

1. ✅ Memory Management Basics
2. ✅ OOM Killer (2.6.38 → 6.18)
3. ✅ Cgroups & Memory Controller
4. 🔄 Page Reclaim & LRU
5. ⏳ Slab Allocator
6. ⏳ Process Scheduler

🤝 Contributing

This is my personal research repo, but feedback welcome!

Last Updated: 2025-10-17