Accelerated Mac OS X Core Dump Analysis, Second Edition
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Accelerated Mac OS X Core Dump Analysis, Second Edition

Training Course Transcript with GDB and LLDB Practice Exercises

About the Book

The full transcript of Software Diagnostics Services training with 12 step-by-step exercises. Learn how to analyse app crashes and freezes, navigate through process core memory dump space and diagnose corruption, memory leaks, CPU spikes, blocked threads, deadlocks, wait chains, and much more. We use a unique and innovative pattern-driven analysis approach to speed up the learning curve. The training consists of practical step-by-step exercises using GDB and LLDB debuggers highlighting more than 30 memory analysis patterns diagnosed in 64-bit process core memory dumps. The training also includes source code of modelling applications written in Xcode environment, a catalogue of relevant patterns from Software Diagnostics Institute, and an overview of relevant similarities and differences between Windows and Mac OS X user space memory dump analysis useful for engineers with Wintel background. Audience: Software technical support and escalation engineers, system administrators, software developers, security professionals and quality assurance engineers.

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

Presentation Slides and Transcript 5

Core Dump Collection 25

Practice Exercises 31

Exercise 0 (GDB) 36

Exercise 0 (LLDB) 39

Exercise A1 (GDB) 42

Exercise A1 (LLDB) 54

Exercise A2 (GDB) 66

Exercise A2 (LLDB) 74

Exercise A3 (GDB) 83

Exercise A3 (LLDB) 88

Exercise A4 (GDB) 94

Exercise A4 (LLDB) 105

Exercise A5 (GDB) 115

Exercise A5 (LLDB) 121

Exercise A6 (GDB) 129

Exercise A6 (LLDB) 155

Exercise A7 (GDB) 176

Exercise A7 (LLDB) 184

Exercise A8 (GDB) 192

Exercise A8 (LLDB) 207

Exercise A9 (GDB) 222

Exercise A9 (LLDB) 249

Exercise A10 (GDB) 277

Exercise A10 (LLDB) 290

Exercise A11 (GDB) 305

Exercise A11 (LLDB) 312

Exercise A12 (GDB) 321

Exercise A12 (LLDB) 344

App Source Code 353

App0 354

App1 355

App2 356

App3 358

App4 360

App5 362

App6 364

App7 366

App8 368

App9 370

App10 372

App11 374

Selected Patterns 377

NULL Pointer (data) 378

Incomplete Stack Trace 379

Stack Trace 380

Multiple Exceptions 381

Shared Buffer Overwrite 382

Incorrect Stack Trace 386

NULL Pointer (code) 387

Spiking Thread 389

Dynamic Memory Corruption (process heap) 391

Double Free (process heap) 392

Execution Residue 393

Coincidental Symbolic Information 395

Stack Overflow (user mode) 397

Divide by Zero (user mode) 400

Local Buffer Overflow 401

C++ Exception 403

Truncated Dump 404

Paratext 405

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