Exception Handler for Dynamic Fatal Error Remediation
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Solution Overview
Problem
Current Information Handling Systems (IHSs) lack mechanisms for dynamic remediation of fatal errors such as Blue Screen of Death (BSoD) and Power-On Self-Test (POST) failures, which result in system crashes and inability to continue booting or maintain runtime operations, with no available mechanisms for importing or exporting telemetry logs to learn failure behaviors.
Innovation Solution
An exception handler is implemented within the IHS that includes a CPU Exception Service Routine (ESR) to dynamically reinitialize pre-boot network or storage stacks, load error remediation modules, and remap the ESR table for OS runtime failover, allowing the system to continue booting from a point of failure without reboot or shutdown, and enabling the import of auto-healing modules from a remote service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional error handling is used, then the system can identify fatal errors, but the system cannot continue booting or maintain runtime operations
Solution Approach 1:
The system prepares remediation modules and exception handlers in advance during system design and initialization. When a fatal error occurs, pre-configured exception service routines and remediation modules are immediately activated, eliminating the need for manual intervention or system reboot. This preliminary preparation enables continuous operation despite fatal errors.
Solution Approach 2:
The exception handler automatically detects fatal errors, loads appropriate remediation modules, and executes corrective actions without external intervention. The system self-diagnoses the error type, retrieves corresponding remediation code from storage or remote services, and applies fixes dynamically, enabling autonomous error recovery and eliminating downtime.
2Reliability
If the system reinitializes pre-boot stacks to continue booting, then boot continuity is maintained, but system complexity increases
Solution Approach 1:
The exception handling system is divided into distinct modular components: error detection routines, exception service routines, remediation modules, and stack reinitialization procedures. Each component has a specific function and can be independently developed, tested, and maintained. This segmentation manages complexity by organizing the exception handling mechanism into manageable, well-defined segments.
Solution Approach 2:
Exception service routines act as intermediaries between fatal errors and system recovery. Rather than directly handling complex error scenarios, the ESRs serve as intermediary layers that detect errors, coordinate with remediation modules, and manage stack reinitialization. This intermediary approach simplifies the overall system architecture by creating a standardized interface for error handling.
3Adaptability or versatility
If error remediation modules are loaded dynamically, then the system can adapt to different errors, but memory management complexity increases
Solution Approach 1:
Remediation modules are pre-loaded into memory during system initialization or pre-positioned in storage before errors occur. The exception handler has advance knowledge of where remediation code resides and how to load it. This preliminary action eliminates the need for complex dynamic memory allocation during error recovery, as memory resources are already prepared and configured.
Solution Approach 2:
The exception handling framework uses universal memory management routines that can handle multiple types of remediation modules through a standardized interface. Rather than implementing separate memory management logic for each error type, a single multi-functional memory management system serves all remediation scenarios, reducing overall complexity while maintaining adaptability.
Data Source
AI summary
An exception handler for dynamic remediation of fatal errors is described. In an illustrative, non-limiting embodiment, an Information Handling System (IHS) may include a Central Processing Unit (CPU) and a memory coupled to the CPU, the memory having program instructions stored thereon that, upon execution, cause the IHS to: in response to an error, call a CPU Exception Service Routine (ESR); and at least one of: re-initialize a pre-boot network stack and transmit error data to a remote service using the pre-boot network stack; or re-initialize a pre-boot storage stack and store the error data using the pre-boot storage stack.