MCE error on BayTrail (E3827)

MCE error on BayTrail (E3827)

Hi:
We are doing  ESD test on E3827 platform,sudendly screen freezed and then os reboot,there are some log before reboot:

Disabling lock debugging due to kernel taint
mce: [Hardware Error]: CPU 1:Machine Check Exception: 4 Bank 0: b200000710000420
mce: [Hardware Error]: TSC 11e93b6704a
mce: [Hardware Error]: PROCESSOR 0:
mce: [Hardware Error]: PROCESSOR 0:30679 TIME 1482764474 SOCKET 0 APIC 4 microcode 901
mce: [Hardware Error]: Run the above through 'mcelog --ascii'
mce: [Hardware Error]: Some CPUs didn't answer in synchrnization
mce: [Hardware Error]: Machine check: Invalid
Kernel panic - not syncing: Fatal Machine check on current CPU
Shutting down cpus with NMI
Rebooting in 30 seconds..
ACPI MEMORY or I/O RESET_REG.

1.what kind of hardware error happend?
2.what the direct reason leading to this hardware error?
3.is this error having something to do with ESD testing?
 

platform: ATOM E3827 CPU stepping D0
kernel: linux kernel 3.8.0

os:build by yocto

microcode patch version:901

BIOS info:

BIOS Vendor: American Megatrends
Core Version:5.0.0.9  0.15 x32
Compliancy:  UEFI 2.3.1; PI 1.2

Zone: 

Thread Topic: 

Bug Report
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