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Investigation Overview A .NET application, primarily used for industrial machine vision, encountered a sponteneous crash. An analysis of the memory dump revealed critical instability within the managed heap. Diagnosing the Crash Using WinDbg to inspect the dump, the initial exception indicated an access violation during garbage collection: (bf8 ...

Understanding ExceptionsExceptions are runtime errors that disrupt the normal flow of a program. These disruptions can occur for various reasons, such as dividing by zero, accessing an out-of-bounds index, missing files, network failures, type mismatches, undefined variables, missing dictionary keys, or insufficient disk space.Without proper ha ...

When debugging kernel-level issues, traditional approaches like eBPF might not be available on older kernel versions. In such cases, perf probe provides a practical alternative for tracing kernel functions without writing custom kernel modules. Before adding probes, identify available symbols through /proc/kallsyms. For instance, to trace splic ...

When executing Python scripts that rely on TensorBoard, developers may encounter a ModuleNotFoundError indicating the absence of the tensorboard module. This issue typically stems from two primary causes within conda-managed environments: the package is missing from the current enviroment, or the shell session is pointing to a different environ ...

This article demonstrates how to use Arthas, a popular diagnostic tool for Java appplications, to troubleshoot common production issues. We'll walk through a sample project with three problematic endpoints and then show how Arthas commands help identify and fix them. Setting Up a Demo Application First, create a Spring Boot application with thr ...

Table of Contents- Procedural Programming - Function-level comments can be extracted Procedural Programming: Facing (towards) --> Process (flow/steps) --> Programming (writing code) IPO Programming Object-Oriented Programming Classes and Objects Customizing Object Properties LeetCode Testing Mechanism Classes and Data Types Procedura ...

When troubleshooting frequant crashes in legacy C# applications, generating memory dump (DMP) files can provide valuable debugging informasion. The following implementation demonstrates how to create DMP files programmatically: using System; using System.Diagnostics; using System.IO; using System.Runtime.InteropServices; public class CrashDump ...

Logging Execution Traces QEMU Logging Enable instruction logging in QEMU with these launch parameters: -d in_asm -D ./qemu.log For additional CPU register output, include the cpu parameter: -d in_asm,cpu. NEMU Logging Configure NEMU during compilation via make menuconfig: Testing and Debugging -> [*] Enable debug features: instruction traci ...

When GDB displays function names as ??() in stack traces, it indicates that the function names cannot be resolved. This typically occurs due to several reasons: Missing Symbol Table Information: If the executable lacks symbol table information or GDB fails to load it, function names and code locations become unavailable. This can happen if deb ...

Overview of Redis Redis (Remote Dictionary Server) is an open-source, high-performance key-value store written in C by Salvatore Sanfilippo. Licensed under the BSD license, it stands out from other caching systems like Memcached due to several core features: Persistence: Supports saving in-memory data to disk for recovery after restarts. Ri ...