Minor Update: Bug occurs under Intel Skylake, too. 

System-information: Intel Core i7-6700 with 4x8 GB Samsung M378A1G43DB0-CPB DDR4-2133 RAM, Motherboard: Fujitsu D3401-H1


Dec 15 06:53:30 srv01 kernel: [224214.850599] mce: [Hardware Error]: Machine check events logged
Dec 15 06:55:08 srv01 kernel: [224312.001142] mce: [Hardware Error]: Machine check events logged
Dec 15 06:57:12 srv01 kernel: [224435.836130] mce: [Hardware Error]: Machine check events logged
Dec 15 07:03:35 srv01 kernel: [224818.079136] mce: [Hardware Error]: Machine check events logged
Dec 15 07:07:55 srv01 kernel: [225077.697589] mce_notify_irq: 1 callbacks suppressed
Dec 15 07:07:55 srv01 kernel: [225077.697592] mce: [Hardware Error]: Machine check events logged
Dec 15 07:08:51 srv01 kernel: [225134.136571] mce: [Hardware Error]: Machine check events logged
Dec 15 07:12:25 srv01 kernel: [225347.598995] mce_notify_irq: 1 callbacks suppressed
Dec 15 07:12:25 srv01 kernel: [225347.598998] mce: [Hardware Error]: Machine check events logged
Dec 15 07:15:03 srv01 kernel: [225504.880462] mce: [Hardware Error]: Machine check events logged
Dec 15 07:17:49 srv01 kernel: [225670.907609] mce: [Hardware Error]: Machine check events logged
Dec 15 07:21:49 srv01 kernel: [225911.163547] mce: [Hardware Error]: Machine check events logged
Dec 15 07:22:57 srv01 kernel: [225978.227807] mce: [Hardware Error]: Machine check events logged
Dec 15 07:24:32 srv01 kernel: [226073.681985] mce: [Hardware Error]: Machine check events logged
Dec 15 07:28:31 srv01 kernel: [226312.111733] mce: [Hardware Error]: Machine check events logged
Dec 15 07:34:04 srv01 kernel: [226644.639095] mce: [Hardware Error]: Machine check events logged
Dec 15 07:35:58 srv01 kernel: [226757.904937] mce_notify_irq: 2 callbacks suppressed
Dec 15 07:35:58 srv01 kernel: [226757.904940] mce: [Hardware Error]: Machine check events logged
Dec 15 07:36:10 srv01 kernel: [226770.139237] mce: [Hardware Error]: Machine check events logged
Dec 15 07:41:14 srv01 kernel: [227073.719040] mce: [Hardware Error]: Machine check events logged
Dec 15 07:41:16 srv01 kernel: [227075.399257] mce: [Hardware Error]: Machine check events logged
Dec 15 07:44:14 srv01 kernel: [227253.699541] mce: [Hardware Error]: Machine check events logged
Dec 15 07:44:57 srv01 kernel: [227296.490305] mce: [Hardware Error]: Machine check events logged
Dec 15 07:52:44 srv01 kernel: [227762.621344] mce: [Hardware Error]: Machine check events logged
Dec 15 07:52:49 srv01 kernel: [227767.372259] mce: [Hardware Error]: Machine check events logged
Dec 15 07:54:39 srv01 kernel: [227877.219677] mce_notify_irq: 1 callbacks suppressed
Dec 15 07:54:39 srv01 kernel: [227877.219680] mce: [Hardware Error]: Machine check events logged
...

mcelog: Family 6 Model 5e CPU: only decoding architectural errors
Hardware event. This is not a software error.
MCE 29
CPU 0 BANK 0
TIME 1450162369 Tue Dec 15 07:52:49 2015
MCG status:
MCi status:
Corrected error
Error enabled
MCA: Internal parity error
STATUS 9000004000010005 MCGSTATUS 0
MCGCAP c0a APICID 0 SOCKETID 0
CPUID Vendor Intel Family 6 Model 94
mcelog: Family 6 Model 5e CPU: only decoding architectural errors
Hardware event. This is not a software error.
MCE 30
CPU 2 BANK 0
TIME 1450162422 Tue Dec 15 07:53:42 2015
MCG status:
MCi status:
Corrected error
Error enabled
MCA: Internal parity error
STATUS 9000004000010005 MCGSTATUS 0
MCGCAP c0a APICID 4 SOCKETID 0
CPUID Vendor Intel Family 6 Model 94
mcelog: Family 6 Model 5e CPU: only decoding architectural errors
Hardware event. This is not a software error.
MCE 31
CPU 1 BANK 0
TIME 1450162479 Tue Dec 15 07:54:39 2015
MCG status:
MCi status:
Corrected error
Error enabled
MCA: Internal parity error
STATUS 9000004000010005 MCGSTATUS 0
MCGCAP c0a APICID 2 SOCKETID 0
CPUID Vendor Intel Family 6 Model 94