Comment 4 for bug 1307225

I can confirm this.

Using qemu-kvm for three virtual machines on Ubuntu 14.04 LTS using a Intel i7-4770 Haswell based server.

dmesg:
[63429.847437] mce: [Hardware Error]: Machine check events logged
[65996.795630] mce: [Hardware Error]: Machine check events logged

mcelog:
Hardware event. This is not a software error.
MCE 0
CPU 2 BANK 0
TIME 1406265172 Fri Jul 25 07:12:52 2014
MCG status:
MCi status:
Corrected error
Error enabled
MCA: Internal parity error
STATUS 90000040000f0005 MCGSTATUS 0
MCGCAP c09 APICID 4 SOCKETID 0
CPUID Vendor Intel Family 6 Model 60

It's the same error everytime, only APICID and CPU numbers are different.
The mce errors did not happen until i migrated the virtual machines from another system, the haswell-server was up for three days without any incidents, now, while running qemu-kvm there is a mce error every 6-12 hours.
After the first errors, i called the support of my server provider, they first exchanged RAM, upgraded BIOS...
Then, they replaced the whole server, only swapping my harddisks to the new one. But even that didn't help, i still got MCE errors. The harddisks where replaced too, one at a time (to resync raid). Now, i have a completely swapped hardware, but the MCE errors are still popping up.

system information attached