Stack Depot Warnings Resolved in Linux Kernel for s390 Architecture

CVE-2024-57838

Summary

A vulnerability in the Linux kernel's handling of IRQ entries on the s390 architecture has led to stack depot warnings due to inadequate filtering. The empty .irqentry.text section obstructs effective stack trace de-duplication, potentially resulting in stack depot limit capacity warnings when PREEMPT and KASAN are enabled. To address this, the fix involves relocating IO/EXT interrupt handlers from .kprobes.text into the .irqentry.text section, thus enhancing the system's ability to manage interrupts effectively without unnecessary overhead.

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