Accelerated .NET Core Memory Dump Analysis
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Accelerated .NET Core Memory Dump Analysis

Training Course Transcript and WinDbg Practice Exercises

About the Book

The full transcript of Software Diagnostics Services training with 9 step-by-step exercises, notes, and source code of specially created modeling applications. The course covers 19 .NET memory dump analysis patterns plus additional 19 unmanaged patterns. Learn how to analyze .NET Core 5/6 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 much more. The training consists of practical step-by-step exercises using Microsoft WinDbg debugger to diagnose patterns in 64-bit process memory dumps. The training uses a unique and innovative pattern-oriented analysis approach to speed up the learning curve. The book is based on the previous fourth edition of Accelerated .NET Memory Dump Analysis that covered .NET Core 5 and Windows 10. It is updated for the latest WinDbg from Windows 11 SDK and has a new .NET Core 6 exercise with a memory dump from Windows 11. This edition also includes a possibility to use a Docker WinDbg image with required symbol files instead of a local Debugging Tools for Windows installation. 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. The revised edition uses the latest WinDbg Preview for all exercise transcripts.

About the Author

Dmitry Vostokov
Dmitry Vostokov

Dmitry Vostokov is an internationally recognized expert, speaker, educator, scientist, inventor, and author. He is the founder of pattern-oriented software diagnostics, forensics, and prognostics discipline (Systematic Software Diagnostics), and Software Diagnostics Institute. Vostokov has also authored more than 50 books on software diagnostics, anomaly detection and analysis, software and memory forensics, root cause analysis and problem solving, memory dump analysis, debugging, software trace and log analysis, reverse engineering and malware analysis. He has more than 25 years of experience in software architecture, design, development and maintenance in a variety of industries including leadership, technical and people management roles. Dmitry also founded Syndromatix,, BriteTrace, DiaThings, Logtellect, OpenTask Iterative and Incremental Publishing, Software Diagnostics Technology and Services (former Memory Dump Analysis Services), and Software Prognostics. In his spare time, he presents various topics on Debugging TV and explores Software Narratology, its further development as Narratology of Things and Diagnostics of Things (DoT), Software Pathology, and Quantum Software Diagnostics. His current areas of interest are theoretical software diagnostics and its mathematical and computer science foundations, application of formal logic, artificial intelligence, machine learning and data mining to diagnostics and anomaly detection, software diagnostics engineering and diagnostics-driven development, diagnostics workflow and interaction. Recent interest areas also include cloud native computing, security, automation, functional programming, applications of category theory to software diagnostics, development and big data, and diagnostics of artificial intelligence.

Table of Contents

About the Author 5

Introduction 7

Practice Exercises 25

Exercise 0: Download, setup, and verify your WinDbg Preview or WinDbg installation, or Docker Debugging Tools for Windows image 30

Exercise PNC1: Analysis of an application process dump (ApplicationA, 64-bit) 45

Exercise PNC2: Analysis of an application process dump (ApplicationA, 32-bit) 62

Exercise PNC3: Analysis of an application process dump (LINQPadB, 64-bit) 80

Exercise PNC4: Analysis of an application process dump (LINQPadC, 64-bit) 106

Exercise PNC5: Analysis of an application process dump (ApplicationD, 64-bit) 123

Exercise PNC6: Analysis of an application process dump (LINQPadD, 64-bit) 138

Exercise PNC7: Analysis of an application process dump (LINQPadE, 64-bit) 152

Exercise PNC8: Analysis of an application process dump (LINQPadF, 64-bit) 159

Conclusion 183

Application Source Code 191

ApplicationA 193

LinqB 194

LinqC 195

ApplicationD 197

LinqD 199

LinqE 201

LinqF 203

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