[Qemu-devel] [Bug 1307225] [NEW] Running a virtual machine on a Haswell system produces machine check events

[Tobias-leupold]

Public bug reported:

I'm running a virtual Windows SBS 2003 installation on a Xeon E3 Haswell
system running Gentoo Linux. First, I used Qemu 1.5.3 (the latest stable
version on Gentoo). I got a lot of machine check events ("mce: [Hardware
Error]: Machine check events logged") in dmesg that always looked like
(using mcelog):

Hardware event. This is not a software error.
MCE 7
CPU 2 BANK 0
TIME 1390267908 Tue Jan 21 02:31:48 2014
MCG status: Corrected error
MCi status: Error enabled
MCA: Internal parity error
STATUS 90000040000f0005 MCGSTATUS 0
MCGCAP c09 APICID 6 SOCKETID 0
CPUID Vendor Intel Family 6 Model 60

I found this discussion on the vmware community:
https://communities.vmware.com/thread/452344

It seems that this is (at least partly) caused by the Qemu machine. I
switched to Qemu 1.7.0, the first version to use "pc-i440fx-1.7". With
this version, the errors almost disappeared, but from time to time, I
still get machine check events. Anyways, they so not seem to affect
neither the vm, nor the host.

I created the virtual machine on an older Core 2 Duo machine and ran it
for several weeks without a single error message, so I think this is
actually some problem with the Haswell architecture. The errors didn't
show up until I copied the virtual machine to my new machine.

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1307225

Title:
  Running a virtual machine on a Haswell system produces machine check
  events

Status in QEMU:
  New

Bug description:
  I'm running a virtual Windows SBS 2003 installation on a Xeon E3
  Haswell system running Gentoo Linux. First, I used Qemu 1.5.3 (the
  latest stable version on Gentoo). I got a lot of machine check events
  ("mce: [Hardware Error]: Machine check events logged") in dmesg that
  always looked like (using mcelog):

  Hardware event. This is not a software error.
  MCE 7
  CPU 2 BANK 0
  TIME 1390267908 Tue Jan 21 02:31:48 2014
  MCG status: Corrected error
  MCi status: Error enabled
  MCA: Internal parity error
  STATUS 90000040000f0005 MCGSTATUS 0
  MCGCAP c09 APICID 6 SOCKETID 0
  CPUID Vendor Intel Family 6 Model 60

  I found this discussion on the vmware community:
  https://communities.vmware.com/thread/452344

  It seems that this is (at least partly) caused by the Qemu machine. I
  switched to Qemu 1.7.0, the first version to use "pc-i440fx-1.7". With
  this version, the errors almost disappeared, but from time to time, I
  still get machine check events. Anyways, they so not seem to affect
  neither the vm, nor the host.

  I created the virtual machine on an older Core 2 Duo machine and ran
  it for several weeks without a single error message, so I think this
  is actually some problem with the Haswell architecture. The errors
  didn't show up until I copied the virtual machine to my new machine.

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