hwmon coretemp driver emits warning adding core NNN failed

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux 9.4
  • Systems with Intel Sierra Forest processors specifically those with a core count higher than 128.

Issue

The hwmon coretemp driver is emitting errors that it can not add cores.

platform coretemp.0: Adding Core 128 failed

Resolution

  • Bug Fix Advisory RHBA-2024:3983
  • Increased core count in coretemp driver

Root Cause

The coretemp driver had a hard coded core count for 128 cores. Some Sierra Forest processors have a core count exceeding 128. The cortemp driver has been updated with a higher core count.

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