You'd have to remove the rpm and then find a lower version of the rpm:
Code:
rpm -qa | grep mcelog
rpm -e mcelogrpmname.rpm
wget http://somepathtothelowerversionrpm
rpm -ivh mcelogolder.rpm
You'd replace the
mcelogrpmname.rpm with the name you obtain from running the "rpm -qa | grep mcelog" command, you'd replace
http://somepathtothelowerversionrpm with the rpm you find online that matches your CentOS distribution and architecture, and you'd replace
mcelogolder.rpm with the name of that older rpm you'd placed onto your machine.
If you want to paste the output for the existing rpm on your machine so we know which one it happens to be, it's possible I could try to track down the rpm for you if you aren't able to locate the older rpm which bugzilla mentions as well in that link I previously provided.