[Hardware Error]: No human readable MCE decoding support on this CPU type

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Hello,
I've getting recurrent messages as follows;
[Hardware Error]: No human readable MCE decoding support on this CPU type.
[Hardware Error]: Run the message through 'mcelog --ascii' to decode.
[Hardware Error]: Machine check events logged
[Hardware Error]: No human readable MCE decoding support on this CPU type.
[Hardware Error]: Run the message through 'mcelog --ascii' to decode.
[Hardware Error]: Machine check events logged

The system is running RHEL 6.1 , kernel `2.6.32-131.0.15.el6.x86_64 #1 SMP Tue May 10 15:42:40 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux`

What does this mean?

Is it a bug as indicated in http://mcelog.org/faq.html#13 ?

AE
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Responses

JS Newbie 15 points
26 May 2011 6:18 PM

Hello, could someone help to get Red Hat Enterprise Linux Workstation 5.3 ISO files?

 

Thanks.

rhn-engineering-sghosh's picture Red Hat Pro 534 points
26 May 2011 11:08 PM

ISO images are available in the customer portal under downloads.

 

Select RHEL 5 and then older releases

 

example RHEL 5.3 x86_64

https://rhn.redhat.com/rhn/software/channel/downloads/Download.do?cid=6957

rhn-engineering-sghosh's picture Red Hat Pro 534 points
26 May 2011 11:10 PM

Amr

Which hardware platform are you running on?

Phil Jensen's picture Guru 3262 points
27 May 2011 3:34 AM

Would you please provide us with the output of cat /proc/cpuinfo?

AE Community Member 57 points
27 May 2011 11:42 AM

It's Dual Six-Core Intel(R) Xeon(R) CPU X5650  @ 2.67GH with HT.

Here is a part of cpuinfo;

processor    : 23
vendor_id    : GenuineIntel
cpu family    : 6
model        : 44
model name    : Intel(R) Xeon(R) CPU           X5650  @ 2.67GHz
stepping    : 2
cpu MHz        : 2666.425
cache size    : 12288 KB
physical id    : 1
siblings    : 12
core id        : 10
cpu cores    : 6
apicid        : 53
initial apicid    : 53
fpu        : yes
fpu_exception    : yes
cpuid level    : 11
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt aes lahf_lm ida arat epb tpr_shadow vnmi flexpriority ept vpid
bogomips    : 5333.19
clflush size    : 64
cache_alignment    : 64
address sizes    : 40 bits physical, 48 bits virtual
power management:
 

Phil Jensen's picture Guru 3262 points
27 May 2011 6:45 PM

https://bugzilla.redhat.com/show_bug.cgi?id=621669
Bug 621669 - mcelog: Unknown Intel CPU type for Xeon X5650

It looks like there's an mcelog bug on Bugzilla for the X5650, but on RHEL5. I don't see a "fix", and I don't see a RHEL6-specific ticket for it either. Also, the link to the Errata listed in the ticket does not appear to be valid either.

To answer your question--it appears to be a bug.

rh Red Hat Pro 686 points
31 January 2013 6:04 AM

Amr,

You are right. Looks like you are hitting following bug.

http://www.mcelog.org/faq.html#13

It is addressed in following bugzilla.

https://bugzilla.redhat.com/show_bug.cgi?id=621669

and fixed in kernel-2.6.32-220.

Updating to the above kernel should fix the issue.

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