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LFD440 – Linux Kernel Debugging and Security (BG)

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Curriculum

31 Sections
178 Lessons
Lifetime

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1 Introduction
3
- 2.1
  1.1 Objectives
- 2.2
  1.3 The Linux Foundation
- 2.3
  1.10 Using and Downloading a Virtual Machine
2 Preliminaries
4
- 3.1
  2.1 Procedures
- 3.2
  2.2 Kernel Versions
- 3.3
  2.3 Kernel Sources and Use of git
- 3.4
  2.4 Labs
3 How to Work in OSS Projects
9
- 4.1
  3.1 Overview on How to Contribute Properly
- 4.2
  3.2 Stay Close to Mainline for Security and Quality
- 4.3
  3.3 Study and Understand the Project DNA
- 4.4
  3.4 Figure Out What Itch You Want to Scratch
- 4.5
  3.5 Identify Maintainers and Their Work Flows and Methods
- 4.6
  3.6 Get Early Input and Work in the Open
- 4.7
  3.7 Contribute Incremental Bits, Not Large Code Dumps
- 4.8
  3.8 Leave Your Ego at the Door: Don’t Be Thin-Skinned
- 4.9
  3.9 Be Patient, Develop Long Term Relationships, Be Helpful
4 Kernel Features
7
- 5.1
  4.1 Components of the Kernel
- 5.2
  4.2 User-Space vs. Kernel-Space
- 5.3
  4.3 What are System Calls?
- 5.4
  4.4 Available System Calls
- 5.5
  4.5 Scheduling Algorithms and Task Structures
- 5.6
  4.6 Process Context
- 5.7
  4.7 Labs
5 Monitoring and Debugging
8
- 6.1
  5.1 Debuginfo Packages
- 6.2
  5.2 Tracing and Profiling
- 6.3
  5.3 sysctl
- 6.4
  5.4 SysRq Key
- 6.5
  5.5 oops Messages
- 6.6
  5.6 Kernel Debuggers
- 6.7
  5.7 debugfs
- 6.8
  5.8 Labs
6 Printk
5
- 7.1
  6.1 Debugging with printk
- 7.2
  6.2 Format Specifiers in printk
- 7.3
  6.3 no hash pointers Command Line Option
- 7.4
  6.4 Using early printk
- 7.5
  6.5 Labs
7 The proc Filesystem
5
- 8.1
  7.1 What is the proc Filesystem?
- 8.2
  7.2 Creating and Removing Entries
- 8.3
  7.3 Reading and Writing Entries
- 8.4
  7.4 The seq file Interface
- 8.5
  7.5 Labs
8 kprobes
4
- 9.1
  8.1 kprobes
- 9.2
  8.2 kretprobes
- 9.3
  8.3 SystemTap
- 9.4
  8.4 Labs
9 Ftrace
11
- 10.1
  9.1 What is ftrace?
- 10.2
  9.2 ftrace, trace-cmd and kernelshark
- 10.3
  9.3 Available Tracers
- 10.4
  9.4 Using ftrace
- 10.5
  9.5 Files in the Tracing Directory
- 10.6
  9.6 Tracing Options
- 10.7
  9.7 Printing with trace printk()
- 10.8
  9.8 Trace Markers
- 10.9
  9.9 Dumping the Buffer
- 10.10
  9.10 trace-cmd
- 10.11
  9.11 Labs
10 Perf
8
- 11.1
  10.1 What is perf?
- 11.2
  10.2 perf stat
- 11.3
  10.3 perf list
- 11.4
  10.4 perf record
- 11.5
  10.5 perf report
- 11.6
  10.6 perf annotate
- 11.7
  10.7 perf top
- 11.8
  10.8 Labs
11 eBPF
6
- 12.1
  11.1 BPF
- 12.2
  11.2 eBPF
- 12.3
  11.3 Installation
- 12.4
  11.4 bcc Tools
- 12.5
  11.5 bpftrace
- 12.6
  11.6 Labs
12 Crash
3
- 13.1
  12.1 Crash
- 13.2
  12.2 Main Commands
- 13.3
  12.3 Labs
13 kexec
5
- 14.1
  13.1 kexec
- 14.2
  13.2 Kernel Configuration
- 14.3
  13.3 kexec-tools
- 14.4
  13.4 Using kexec
- 14.5
  13.5 Labs
14 Kernel Core Dumps
2
- 15.1
  14.1 Producing and Analyzing Kernel Core Dumps
- 15.2
  14.2 Labs
15 Virtualization
3
- 16.1
  15.1 What is Virtualization?
- 16.2
  15.2 Rings of Virtualization
- 16.3
  15.3 Hypervisors
16 QEMU
5
- 17.1
  16.1 What is QEMU?
- 17.2
  16.2 Emulated Architectures
- 17.3
  16.3 Image Formats
- 17.4
  16.4 Third Party Hypervisor Integration
- 17.5
  16.5 Labs
17 Linux Kernel Debugging Tools
5
- 18.1
  17.1 Linux Kernel (built-in) tools and helpers
- 18.2
  17.2 kdb
- 18.3
  17.3 qemu+gdb
- 18.4
  17.4 kgdb: hardware+serial+gdb
- 18.5
  17.5 Labs
18 Embedded Linux
4
- 19.1
  18.1 Embedded and Real Time Operating Systems
- 19.2
  18.2 Why Use Linux?
- 19.3
  18.3 Making a Small Linux Environment
- 19.4
  18.4 Real Time Linuxes
19 Notifiers
5
- 20.1
  19.1 What are Notifiers?
- 20.2
  19.2 Data Structures
- 20.3
  19.3 Callbacks and Notifications
- 20.4
  19.4 Creating Notifier Chains
- 20.5
  19.5 Labs
20 CPU Frequency Scaling
5
- 21.1
  20.1 What is Frequency and Voltage Scaling?
- 21.2
  20.2 Notifiers
- 21.3
  20.3 Drivers
- 21.4
  20.4 Governors
- 21.5
  20.5 Labs
21 Netlink Sockets
4
- 22.1
  21.1 What are netlink Sockets?
- 22.2
  21.2 Opening a netlink Socket
- 22.3
  21.3 netlink Messages
- 22.4
  21.4 Labs
22 Kernel Deprecated Interfaces
10
- 23.1
  22.1 Why Deprecated
- 23.2
  22.2 deprecated
- 23.3
  22.3 BUG() and BUG ON()
- 23.4
  22.4 Computed Sizes for kmalloc()
- 23.5
  22.5 simple strtol() Family of Routines
- 23.6
  22.6 strcpy(), strncpy(), strlcpy()
- 23.7
  22.7 printk() %p Format Specifier
- 23.8
  22.8 Variable Length Arrays
- 23.9
  22.9 Switch Case Fall-Through
- 23.10
  22.10 Zero-Length and One-Element Arrays in Structs
23 Introduction to Linux Kernel Security
9
- 24.1
  23.1 Linux Kernel Security Basics
- 24.2
  23.2 Discretionary Access Control (DAC)
- 24.3
  23.3 POSIX ACLs
- 24.4
  23.4 POSIX Capabilities
- 24.5
  23.5 Namespaces
- 24.6
  23.6 Linux Security Modules (LSM)
- 24.7
  23.7 Netfilter
- 24.8
  23.8 Cryptographic Methods
- 24.9
  23.9 The Kernel Self Protection Project
24 Linux Security Modules (LSM)
5
- 25.1
  24.1 What are Linux Security Modules?
- 25.2
  24.2 LSM Basics
- 25.3
  24.3 LSM Choices
- 25.4
  24.4 How LSM Works
- 25.5
  24.5 An LSM Example: Tomoyo
25 SELinux
13
- 26.1
  25.1 SELinux
- 26.2
  25.2 SELinux Overview
- 26.3
  25.3 SELinux Modes
- 26.4
  25.4 SELinux Policies
- 26.5
  25.5 Context Utilities
- 26.6
  25.6 SELinux and Standard Command Line Tools
- 26.7
  25.7 SELinux Context Inheritance and Preservation
- 26.8
  25.8 restorecon
- 26.9
  25.9 semanage fcontext
- 26.10
  25.10 Using SELinux Booleans
- 26.11
  25.11 getsebool and setsebool
- 26.12
  25.12 Troubleshooting Tools
- 26.13
  25.13 Labs
26 AppArmor
5
- 27.1
  26.1 What is AppArmor?
- 27.2
  26.2 Checking Status
- 27.3
  26.3 Modes and Profiles
- 27.4
  26.4 Profiles
- 27.5
  26.5 Utilities
27 Netfilter
6
- 28.1
  27.1 What is netfilter?
- 28.2
  27.2 Netfilter Hooks
- 28.3
  27.3 Netfilter Implementation
- 28.4
  27.4 Hooking into Netfilter
- 28.5
  27.5 Iptables
- 28.6
  27.6 Labs
28 The Virtual File System
11
- 29.1
  28.1 What is the Virtual File System?
- 29.2
  28.2 Available Filesystems
- 29.3
  28.3 Special Filesystems
- 29.4
  28.4 The tmpfs Filesystem
- 29.5
  28.5 The ext2/ext3 Filesystem
- 29.6
  28.6 The ext4 Filesystem
- 29.7
  28.7 The btrfs Filesystem
- 29.8
  28.8 Common File Model
- 29.9
  28.9 VFS System Calls
- 29.10
  28.10 Files and Processes
- 29.11
  28.11 Mounting Filesystems
29 Filesystems in User-Space (FUSE)
3
- 30.1
  29.1 What is FUSE?
- 30.2
  29.2 Writing a Filesystem
- 30.3
  29.3 Labs
30 Journaling Filesystems
4
- 31.1
  30.1 What are Journaling Filesystems?
- 31.2
  30.2 Available Journaling Filesystems
- 31.3
  30.3 Contrasting Features
- 31.4
  30.4 Labs
31 Closing and Evaluation Survey
1
- 32.1
  31.1 Evaluation Survey

LFD440 – Linux Kernel Debugging and Security (BG)

LFD440 – Linux Kernel Debugging and Security (BG)

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