Exalogic Virtual: Compute Node Hang Issue with "rcu_sched_state detected stalls on CPUs/tasks" Error Message

(Doc ID 2199474.1)

Last updated on SEPTEMBER 03, 2017

Applies to:

Oracle Exalogic Elastic Cloud Software - Version 2.0.6.2.160419 to 2.0.6.2.161018
Exalogic Elastic Cloud X5-2 Hardware
Linux x86-64
Oracle Virtual Server x86-64

Symptoms

In Exalogic Virtual racks running July or October 2016 PSUs, Compute Node hanging or rebooting is seen. If the node hangs, it cannot be pinged or accept logins at the time of the issue. In that case, the node has to be force stopped from the ILOM and started again the same way in order to recover from the issue.

Below are the error messages seen in /var/log/messages system log at the time of the issue:

Cause

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