Bug 1388855

Summary: lots of errors in journal when try to install a guest machine with two cpus specified
Product: [Fedora] Fedora Reporter: lnie <lnie>
Component: qemuAssignee: Fedora Virtualization Maintainers <virt-maint>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 25CC: amit, amit.shah, berrange, cfergeau, clalancette, crobinso, dwmw2, ehabkost, extras-orphan, itamar, markmc, pbonzini, quintela, rjones, virt-maint
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Hardware: Unspecified   
OS: Unspecified   
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Last Closed: 2017-02-16 19:31:23 UTC Type: Bug
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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journal none

Description lnie 2016-10-26 10:12:37 UTC
Created attachment 1214243 [details]
journal

Description of problem:
Oct 26 17:59:22 localhost.localdomain kernel: kvm [2836]: vcpu1, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x34
Oct 26 17:59:41 localhost.localdomain kernel: kvm [2836]: vcpu1, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x606
Oct 26 17:59:42 localhost.localdomain kernel: kvm [2836]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x60d
Oct 26 17:59:42 localhost.localdomain kernel: kvm [2836]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x3f8
Oct 26 17:59:42 localhost.localdomain kernel: kvm [2836]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x3f9
Oct 26 17:59:42 localhost.localdomain kernel: kvm [2836]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x3fa
Oct 26 17:59:42 localhost.localdomain kernel: kvm [2836]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x630
Oct 26 17:59:42 localhost.localdomain kernel: kvm [2836]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x631
Oct 26 17:59:42 localhost.localdomain kernel: kvm [2836]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x632
Oct 26 17:59:42 localhost.localdomain kernel: kvm [2836]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x611
Oct 26 17:59:42 localhost.localdomain kernel: kvm [2836]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x639

Version-Release number of selected component (if applicable):
kernel-4.8.3-300.fc25.x86_64
qemu-kvm-2.7.0-6.fc25.x86_64

How reproducible:
always

Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

Comment 1 lnie 2016-10-27 02:39:58 UTC
More informations:
Got similar errors even if I specify one vcpu for the virtual machine,
Oct 27 10:22:17 localhost.localdomain virtlogd[2627]: End of file while reading data: Input/output error
Oct 27 10:22:31 localhost.localdomain kernel: kvm [2634]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x34
Oct 27 10:22:49 localhost.localdomain kernel: kvm [2634]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x606
Oct 27 10:22:49 localhost.localdomain kernel: kvm [2634]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x60d
Oct 27 10:22:49 localhost.localdomain kernel: kvm [2634]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x3f8
Oct 27 10:22:49 localhost.localdomain kernel: kvm [2634]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x3f9
Oct 27 10:22:49 localhost.localdomain kernel: kvm [2634]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x3fa
Oct 27 10:22:49 localhost.localdomain kernel: kvm [2634]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x630
Oct 27 10:22:49 localhost.localdomain kernel: kvm [2634]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x631
Oct 27 10:22:49 localhost.localdomain kernel: kvm [2634]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x632
Oct 27 10:22:49 localhost.localdomain kernel: kvm [2634]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x60d
Oct 27 10:22:49 localhost.localdomain kernel: kvm [2634]: vcpu0, guest rIP: 0xffffffff8805d722 unhandled rdmsr: 0x3f8

This is not a new bug,as it also happened before I updated the kernel and kvm:

Sep 28 12:56:11 localhost.localdomain kernel: kvm [3623]: vcpu0, guest rIP: 0xffffffffab05e722 unhandled rdmsr: 0x34
Sep 28 12:56:39 localhost.localdomain kernel: kvm [3623]: vcpu0, guest rIP: 0xffffffffab05e722 unhandled rdmsr: 0x606
Sep 28 12:56:39 localhost.localdomain kernel: kvm [3623]: vcpu0, guest rIP: 0xffffffffab05e722 unhandled rdmsr: 0x60d
Sep 28 12:56:39 localhost.localdomain kernel: kvm [3623]: vcpu0, guest rIP: 0xffffffffab05e722 unhandled rdmsr: 0x3f8
Sep 28 12:56:39 localhost.localdomain kernel: kvm [3623]: vcpu0, guest rIP: 0xffffffffab05e722 unhandled rdmsr: 0x3f9
Sep 28 12:56:39 localhost.localdomain kernel: kvm [3623]: vcpu0, guest rIP: 0xffffffffab05e722 unhandled rdmsr: 0x3fa
Sep 28 12:56:39 localhost.localdomain kernel: kvm [3623]: vcpu0, guest rIP: 0xffffffffab05e722 unhandled rdmsr: 0x630
Sep 28 12:56:39 localhost.localdomain kernel: kvm [3623]: vcpu0, guest rIP: 0xffffffffab05e722 unhandled rdmsr: 0x631
Sep 28 12:56:39 localhost.localdomain kernel: kvm [3623]: vcpu0, guest rIP: 0xffffffffab05e722 unhandled rdmsr: 0x632
Sep 28 12:56:39 localhost.localdomain kernel: kvm [3623]: vcpu0, guest rIP: 0xffffffffab05e722 unhandled rdmsr: 0x60d
Sep 28 12:56:39 localhost.localdomain kernel: kvm [3623]: vcpu0, guest rIP: 0xffffffffab05e722 unhandled rdmsr: 0x3f8

Comment 2 Cole Robinson 2017-02-16 19:31:23 UTC
Thanks for the report. My understanding is that these messages are generally harmless, it's just an indication that kvm isn't emulating a particular MSR. So if your guest is functioning correctly I don't think it's anything to worry about