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Accelerated .NET Memory Dump Analysis

Training Course Transcript with WinDbg and LLDB Practice Exercises, Seventh Edition

Learn how to analyze .NET application and service crashes and freezes, navigate memory dump space (managed and unmanaged code), and diagnose corruption, leaks, CPU spikes, blocked threads, deadlocks, wait chains, resource contention, and much more using WinDbg on Windows and LLDB on Linux. Covers 22 .NET memory dump analysis patterns, plus the additional 21 unmanaged patterns.

Dmitry Vostokov

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About the Book

The full Software Diagnostics Services training transcript with 15 step-by-step exercises, notes, and source code of specially created modeling applications. The course covers 22 .NET memory dump analysis patterns, plus the additional 21 unmanaged patterns. Learn how to analyze .NET 9 application and service crashes and freezes, navigate through memory dump space (managed and unmanaged code), and diagnose corruption, leaks, CPU spikes, blocked threads, deadlocks, wait chains, resource contention, and more. The training consists of practical step-by-step exercises using WinDbg and LLDB debuggers to diagnose patterns in 64-bit process memory dumps from x64 Windows and x64 Linux environments. The training uses a unique and innovative pattern-oriented analysis approach to speed up the learning curve. The book is a completely revamped and extended the previous Accelerated .NET Core Memory Dump Analysis, Revised Edition. It is updated to the latest WinDbg. It also includes reviews of x64 and IL disassembly and memory space basics, Linux LLDB exercises, .NET memory dump collection on Windows and Linux, and the relationship of analysis patterns to defect mechanism patterns.

Prerequisites: Basic .NET programming and debugging.

Audience: Software technical support and escalation engineers, system administrators, DevOps, performance and reliability engineers, software developers, and quality assurance engineers. The book may also interest security researchers, reverse engineers, malware and memory forensics analysts.

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About the Author

Dmitry Vostokov

Episode 213

An Interview with Dmitry Vostokov

Table of Contents

About the Author 5

Introduction 7

Fundamentals (Windows) 17

Fundamentals (Linux) 29

x64 Disassembly Review 39

IL Disassembly Basics 57

Memory Dump Generation 63

Practice Exercises 67

Exercise PN0 (WinDbg) 76

Exercise PN0 (LLDB) 87

Exercise PN1 (Windows) 93

Exercise PN1 (Linux) 114

Exercise PN2 (Windows) 121

Exercise PN3 (Windows) 133

Exercise PN3 (Linux) 157

Exercise PN4 (Windows) 166

Exercise PN4 (Linux) 182

Exercise PN5 (Windows) 194

Exercise PN5 (Linux) 208

Exercise PN6 (Windows) 215

Exercise PN6 (Linux) 229

Exercise PN7 (Windows) 241

Exercise PN7 (Linux) 249

Exercise PN8 (Windows) 254

Exercise PN8 (Linux) 286

Conclusion 291

Application Source Code 301

ApplicationA 303

LinqB 304

LinqC 305

ApplicationD 307

LinqD 309

LinqE 311

LinqF 313

ApplicationG 314

ApplicationH 315

ApplicationI 316

ApplicationJ 318

ApplicationK 320

ApplicationL 322

ApplicationM 324

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