ERROR_KERNEL_APC - 738 (0x2E2)

Technical Background

The ERROR_KERNEL_APC error code, with the numeric value of 738 and the hexadecimal representation of 0x2E2, is associated with issues related to kernel asynchronous procedure calls (APCs) in Windows operating systems. APCs are a mechanism for scheduling procedures to be executed at an appropriate time by the system scheduler.

Error Details

This error typically indicates that there has been an issue with the handling of an APC within the kernel. The specific context and cause can vary, but it generally points to a problem in the asynchronous execution path of the operating system.

Common Causes

• Invalid APC Handling: Incorrect or invalid APCs may lead to this error.
• Kernel Resource Constraints: Exceeding resource limits for APCs could trigger this issue.
• System Stability Issues: Kernel stability problems might result in improper handling of APCs, leading to this error.

Real-World Context

In practical scenarios, this error can occur when an application or driver attempts to schedule an APC that the kernel cannot process due to various constraints. This could be related to the number of outstanding APCs, resource availability, or other system limitations.

Is This Error Critical?

The criticality of ERROR_KERNEL_APC depends on the specific context in which it occurs. While not inherently catastrophic, it can indicate a potential stability issue that should be investigated further.

How to Diagnose

To diagnose this error, consider the following steps:

• Review Operation Context: Ensure that the APCs are being scheduled and processed correctly within their intended context.
• Validate Parameters: Check for any invalid or incorrect parameters passed to the APC scheduling functions.
• Confirm Object Types: Verify that the object types involved in the APC handling are correct and supported by the system.

How to Resolve

To resolve ERROR_KERNEL_APC, consider the following actions:

• Correct Parameter Usage: Ensure all parameters used for APC scheduling are valid and correctly formatted.
• Adjust Operation Context: If the issue is related to resource constraints, adjust the operation context or reduce the number of concurrent APCs.
• Restore Data: In cases where data corruption might be a factor, restore any affected data to its correct state.

Developer Notes

Developers should ensure that all APC-related operations are performed within the bounds of system limitations and that they handle potential errors gracefully. Proper validation of parameters and context checks can help prevent this error from occurring.

Related Errors

• ERROR_APC_MISMATCH: Indicates a mismatch between expected and actual APCs.
• STATUS_INVALID_PARAMETER: Occurs when an invalid parameter is passed to a function, which might be related to APC scheduling.

FAQ

Q: What does the ERROR_KERNEL_APC error code mean?

A: It indicates an issue with kernel asynchronous procedure calls (APCs) that could not be processed correctly.

Q: How can I prevent this error from occurring?

A: Ensure all APC-related operations are performed within system limits and validate parameters before scheduling APCs.

Summary

ERROR_KERNEL_APC is a specific error code related to issues with kernel asynchronous procedure calls. It indicates that the operating system encountered a problem while processing an APC, which could be due to various factors such as invalid parameters or resource constraints. Proper validation of parameters and context checks can help prevent this issue.