Kernel receives unexpected unknown NMI in Red Hat Enterprise Linux 9.3

Uhhuh. NMI received for unknown reason 2c on CPU 0

Kernel receives unexpected unknown NMI in Red Hat Enterprise Linux 9.3

Solution Unverified - Updated November 15 2024 at 2:07 AM -

English

Environment

Red Hat Enterprise Linux 9.3

Issue

Sometimes the kernel shows the following message without NMI button operations.

Raw
```
  kernel: Uhhuh. NMI received for unknown reason 2c on CPU 0.
```

Resolution

Update to kernel-5.14.0-503.11.1.el9_5 or later

Root Cause

Kernel patch(s) introduced in Red Hat Enterprise Linux 9.3 could cause the issue.
Component
kernel
Category
Troubleshoot
Tags
hardware
kernel
rhel_9

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