ULTRIX Kernel Messages Reference Manual

This document is the ULTRIX Kernel Messages Reference Manual, published by Digital Equipment Corporation in May 1991, specifically for ULTRIX Version 4.2 or higher.

The manual serves as a reference guide for kernel panic messages (error messages that typically cause system crashes) produced by the ULTRIX operating system. It is primarily intended for experienced programmers, Digital field service, and software support personnel to aid in resolving hardware and software-detected system problems.

The document is organized into two main chapters and an appendix:

• Chapter 1 (Kernel Messages) introduces the ULTRIX kernel, classifies kernel messages (Errors/Panics, Warnings, Information), explains how these messages are generated and reported (primarily to the console and errorlog buffer), and details the standard format for panic messages (File, Routine, Problem, Output, Action). It also provides general guidance on resolving panic problems.
• Chapter 2 (Kernel Panic Messages) comprises the core content, listing specific panic messages alphabetically. Each entry describes the file and routine where the panic occurs, the underlying problem, and any associated output or suggested actions.
• Appendix A lists the files in the ULTRIX kernel in a directory tree format.

The manual focuses predominantly on error messages (panics) and explicitly states that messages from optional ULTRIX products are not included.