Bug 1266659

Summary: KVM: FAILED VMRUN WITH VMCB:
Product: [Fedora] Fedora Reporter: Richard W.M. Jones <rjones>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED EOL QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: rawhideCC: gansalmon, itamar, jonathan, kernel-maint, labbott, madhu.chinakonda, mchehab, pbonzini
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2018-04-06 17:52:54 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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dmesg (host) none

Description Richard W.M. Jones 2015-09-26 09:08:38 UTC 
Created attachment 1077337 [details]
dmesg (host)

Description of problem:

AMD hardware, nested KVM enabled.  I am running a single Ubuntu 14.04
guest.

It *reliably* hangs the guest hard and requires a complete host reboot
after I run a network-heavy command in the guest (apt-get).

In the host, there are numerous errors in dmesg (see attachment).

Version-Release number of selected component (if applicable):

4.1.6-201.fc22.x86_64

host hardware: 
AMD FX(tm)-8320 Eight-Core Processor

How reproducible:

100%

Steps to Reproduce:
1. Start Ubuntu 14.04 guest with nested KVM enabled.
2. Run any large apt-get command.
3. Guest hangs hard.

Additional info:

Seems similar to this:
https://lkml.org/lkml/2015/9/18/338
Comment 1 Richard W.M. Jones 2015-09-26 09:09:15 UTC 
Paolo - do you think it's the same issue as
https://lkml.org/lkml/2015/9/18/338 ?
Comment 2 Laura Abbott 2018-04-06 17:52:54 UTC 
Doing some pruning, this bug looks to be years old. Please test on a newer kernel and reopen if the problem still exists.