For the record, first ever CE reported by mcelog below on the hardware I have access to. No UCEs nor even repeating CEs seen. Have not tested mce-inject and/or apei/einj.ko kernel module.
mcelog: failed to prefill DIMM database from DMI data Hardware event. This is not a software error. MCE 0 CPU 0 BANK 0 TIME 1422983269 Tue Feb 3 19:07:49 2015 MCG status: MCi status: Corrected error Error enabled MCA: Internal parity error STATUS 90000040000f0005 MCGSTATUS 0 MCGCAP c09 APICID 0 SOCKETID 0 CPUID Vendor Intel Family 6 Model 60 Syslog entries for mcelog startup on up-to-date trusty do still mention that page-offlining is unsupported: Feb 19 08:26:04 gx1 mcelog: failed to prefill DIMM database from DMI data Feb 19 08:26:04 gx1 mcelog: Kernel does not support page offline interface ** Tags added: trusty -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/588993 Title: mcelog does not work due to lack of kernel support Status in linux package in Ubuntu: Confirmed Bug description: mcelog does not seem to be happy with the current Ubuntu kernel. This is all I get in /var/log/syslog: # grep mce /var/log/syslog Jun 2 18:14:15 xxxxx mcelog: failed to prefill DIMM database from DMI data Jun 2 18:14:15 xxxxx mcelog: Kernel does not support page offline interface I can disable memory database prefill option in /etc/mcelog/mcelog.conf which silences the first error message. However, dmidecode seems to work just fine and produces reasonably looking output so I am not sure why prefill option of mcelog fails. Also, mcelog never outputs anything so I suspect it is not functional. I have a cluster of identical hardware and I can simulate a constant stream of MCE errors by misconfiguring memory settings in BIOS. The errors are successfully fetched and reported by mcelog on the nodes with CentOS 5 installed (kernel 2.6.18-164.15.1.el5). Nothing is reported under Ubuntu Server 10.04 LTS on this same hardware. # lsb_release -rd Description: Ubuntu 10.04 LTS Release: 10.04 # uname -a Linux xxxxx 2.6.32-22-server #33-Ubuntu SMP Wed Apr 28 14:34:48 UTC 2010 x86_64 GNU/Linux # apt-cache policy mcelog mcelog: Installed: 1.0~pre3-1 Candidate: 1.0~pre3-1 Version table: *** 1.0~pre3-1 0 500 http://us.archive.ubuntu.com/ubuntu/ lucid/universe Packages 100 /var/lib/dpkg/status To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/588993/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp