Node With Multiple VMs Hangs Due To CPU Stall

(Doc ID 2286384.1)

Last updated on JANUARY 24, 2018

Applies to:

Oracle VM - Version 3.2.1 and later
Information in this document applies to any platform.

Symptoms

A node and all running VMs suddenly become unresponsive forcing a power cycle to clear the problem. After booting, the system operates normally with no further issues. Investigation into the issue reveals the following:

The the ILOM hostconsole.log file for the node shows the following mlx4_core errors followed by CPU stalls with a stack trace. These may repeat several times.

Cause

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Node With Multiple VMs Hangs Due To CPU Stall

Applies to:

Symptoms

Cause

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