Accelerated Mac OS X Core Dump Analysis, Second Edition
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
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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