That is a corruption error in a memory read or write opperation, it could be caused by failing hardware or a file error that was either, lost in a hardware read/write glitch, caused by hopefully a temporary condition like heat, or power fluctuation??? There are several programs you can stress test the system with to check for those problems, it will run clean if that was a temporary issue, if it's some part failing, the stress test might show which part is having issues.
here is one for the memory
http://www.memtest86.com/