OVM 2.x VM Guest Hangs While Writing To Console (Doc ID 1630323.1)

Last updated on SEPTEMBER 14, 2017

Applies to:

Oracle VM - Version 2.1 and later
Linux x86

Symptoms

1. Oracle VM Server release 2.x with xen package version earlier than xen-3.4.0-0.1.38.el5.

2. A lot of "BUG: soft lockup - CPU## stuck for xxs!" (lots of D/Z status processes) found in VM guest system logs and its crash dump core file.

3. Check CPUs in crash dump core, some CPUs freeze at xenconsole:

 

Changes

VM guest(s) generate large amounts of console outputs.

Cause

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