Month: 2025-07 — Focused on reliability hardening of the kernel’s ACPI APEI path within geerlingguy/linux. Delivered targeted fixes to improve memory error handling and recovery behavior, reducing chances of instability during memory failure events and preventing unnecessary reboots. Overview of work: - Implemented robust synchronous memory error handling in the ACPI APEI driver, including proper signaling and error reporting when a memory error could not be recovered. - Moved memory failure handling to task_work so it runs in the triggering task context, avoiding potential infinite loops and reboots caused by work queued in an unsafe context. - Verified changes via targeted commits and ensured compatibility with existing APEI error codes and workflow. Impact: - Enhanced system stability during memory failure scenarios, lowering downtime risk for deployments relying on geerlingguy/linux. - More predictable recovery behavior and clearer failure signaling to user-space processes where appropriate. Key deployments: - Commit 79a5ae3c4c5eb7e38e0ebe4d6bf602d296080060: "ACPI: APEI: send SIGBUS to current task if synchronous memory error not recovered" - Commit c1f1fda141373d7253b4c1497043b0ef85f534ce: "ACPI: APEI: handle synchronous exceptions in task work"