What is the primary purpose of the Breenix Interrupt Trace skill?

It is designed to help developers analyze low-level interrupt behavior in the Breenix OS by capturing and parsing QEMU trace logs to identify crashes, privilege errors, and register corruption.

Which QEMU flags are used for tracing?

The skill utilizes specific debug flags such as 'int', 'cpu_reset', 'guest_errors', and 'exception' to generate comprehensive logs for analysis.

Does it support privilege level verification?

Yes, it tracks CPL (Current Privilege Level) transitions to ensure proper switching between Ring 0 (Kernel) and Ring 3 (User mode) during system calls and interrupt returns.

How does it handle large log files?

The skill provides optimized grep and awk command patterns to filter large QEMU logs, focusing on summary statistics or specific interrupt vectors to keep the data manageable.

Can this skill detect triple faults?

Yes, it specifically identifies exception cascades—such as a Page Fault leading to a Double Fault—that ultimately result in a CPU reset or Triple Fault.

Breenix Interrupt Trace Analysis

Name: Breenix Interrupt Trace Analysis
Author: ryanbreen

byryanbreen

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Analytics & Monitoring

Analyzes low-level interrupt behavior, kernel privilege transitions, and CPU register states for the Breenix operating system using QEMU trace logs.

About

The Breenix Interrupt Trace skill provides a systematic framework for debugging kernel-level issues within the Breenix environment. By capturing and parsing QEMU's detailed interrupt logs, it allows developers to verify interrupt vector sequences, monitor privilege level transitions between Ring 0 and Ring 3, and inspect CPU register states during critical failures. This skill is essential for diagnosing complex issues like triple faults, page faults, and register corruption, offering automated parsing and summary reporting to accelerate the OS development and debugging lifecycle.

Key Features

Automated QEMU interrupt trace log capture and environment setup
Interrupt vector sequence parsing for identifying timer, syscall, and exception events
Privilege level transition monitoring between Ring 0 (Kernel) and Ring 3 (User)
Deep register state inspection including RIP, RSP, CR3, and RFL at the moment of failure
Automated anomaly detection for exception cascades and triple faults
4 GitHub stars

Use Cases

Investigating unexpected kernel crashes and triple faults during the boot sequence
Verifying system call execution flow and privilege level switching logic
Debugging interrupt handler issues and identifying register corruption between interrupts

About

Key Features

Automated QEMU interrupt trace log capture and environment setup
Interrupt vector sequence parsing for identifying timer, syscall, and exception events
Privilege level transition monitoring between Ring 0 (Kernel) and Ring 3 (User)
Deep register state inspection including RIP, RSP, CR3, and RFL at the moment of failure
Automated anomaly detection for exception cascades and triple faults
4 GitHub stars

Use Cases

Investigating unexpected kernel crashes and triple faults during the boot sequence
Verifying system call execution flow and privilege level switching logic
Debugging interrupt handler issues and identifying register corruption between interrupts