ClickCease Linux 6.1 Help Users Identify Faulty CPUs - TuxCare

Join Our Popular Newsletter

Join 4,500+ Linux & Open Source Professionals!

2x a month. No spam.

Linux 6.1 Help Users Identify Faulty CPUs

Obanla Opeyemi

September 4, 2022 - TuxCare expert team

Linux Kernel 6.1 one of the latest updates to the Linux operating system provides users with a new logging system that will enable them to identify faulty CPUs and their associated cores within a server.

The logging system detects which core, CPU, and socket failed at a given time. However, the logger is far from perfect, as there is a possibility that the kernel gets rescheduled toward another CPU or CPU core, although it can still help identify faulty CPUs or cores.

“This is not perfect, since the task might get rescheduled on another CPU between when the fault hit, and when the message is printed, but in practice, this has been good enough to help people identify several bad CPU cores,” explained Rik van Riel, the author of the change.

Often CPU bugs have the ability to be “oddly specific,” where certain programs or pieces of code only crash the core.

“In a large enough fleet of computers, it is common to have a few bad CPUs. Those can often be identified by seeing that some commonly run kernel code, which runs fine everywhere else, keeps crashing on the same CPU core on one particular bad system. However, the failure mode in CPUs that have gone bad over the years are often oddly specific, and the only bad behavior seen might be segfaulting in programs like bash, Python, or various system daemons that run fine everywhere else,” said Riel.

The logging system will help detect potentially faulty processors and will be in use from Linux 6.1 later this year. It will also complement the new Intel In-Field Scan, MCEs, EDAC reporting and others.

The sources for this piece include an article in Tech Radar.

Looking to automate vulnerability patching without kernel reboots, system downtime, or scheduled maintenance windows?

Learn About Live Patching with TuxCare

Related Articles

New Hook malware for Android...

ThreatFabric cybersecurity researchers have discovered a new type of Android...

January 31, 2023

How GPT models can be...

According to CyberArk researchers, GPT-based models like ChatGPT can be...

January 30, 2023

Attackers actively exploit Unpatched Control...

Malicious hackers have started exploiting a critical vulnerability CVE-2022-44877 in...

January 27, 2023

Attackers distribute malware via malicious...

Deep Instinct researchers reported that RATs like StrRAT and Ratty...

January 26, 2023

CircleCI partners AWS to identify...

According to CircleCI’s CTO, Rob Zuber, CircleCI is working with...

January 25, 2023

Cisco warns of authentication bypass...

A remote attacker could exploit multiple vulnerabilities in four Cisco...

January 24, 2023