Mcelog showing "MemCtrl: Corrected patrol scrub error"

Issue

Mcelog is showing below messages :

STATUS 8c000043000800c0 MCGSTATUS 0 
MCGCAP 1000c14 APICID 20 SOCKETID 1 
CPUID Vendor Intel Family 6 Model 45 
Hardware event. This is not a software error. 
MCE 0 
CPU 8 BANK 8 
MISC 90840100010068c ADDR e0a63f000 
TIME 1436442706 Thu Jul  9 17:21:46 2015 
MCG status: 
MCi status: 
Corrected error 
MCi_MISC register valid 
MCi_ADDR register valid 
MCA: MEMORY CONTROLLER MS_CHANNEL0_ERR 
Transaction: Memory scrubbing error 
MemCtrl: Corrected patrol scrub error  <-----------