Hello,<br />
<br />
I'm trying to investigate regular "freezes" on a CentOS 6.4 machine, Intel hardware.<br />
<br />
On this particular machine, I see this message regularly in /etc/var/log/messages (about each hour):<br />
<br />
Aug 22 01:01:01 server1 kernel: Program mcelog tried to access /dev/mem between beb0a000->beb0b000<br />
<br />
/etc/mcelog/mcelog.conf has the DEFAULT content (unmodified, as given in the rpm package).<br />
<br />
I don't know if it is related, but I see this old Fedora bug here <a href="https://bugzilla.redhat.com/show_bug.cgi?id=527267">https://bugzilla.redhat.com/show_bug.cgi?id=527267</a> [<a href="https://bugzilla.redhat.com/show_bug.cgi?id=527267" target="_blank">^</a>]<br />
<br />
In my case, SELinux is DISABLED in /etc/sysconfig/selinux<br />
<br />
<br />
I also have similar machines where this message does not show up in logs. As particularities, this machine, the one that freezes unexpectedly, has:<br />
<br />
- hardware RAID installed (with classic HDDs)<br />
- SSD units (out of RAID)<br />
- UEFI BIOS<br />
- SO installed in UEFI mode<br />
<br />
<br />
Best regards,<br />
R?zvan
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