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NMI error unknown reason b0.

Robert Walker_8
Valued Contributor

NMI error unknown reason b0.

Mar 3 03:01:06 test kernel: Uhhuh. NMI received for unknown reason b0.
Mar 3 03:01:06 test kernel: You probably have a hardware problem with your RAM chips
Mar 3 03:01:06 test kernel: Dazed and confused, but trying to continue

We have a couple of times gotten the above error. System stays up applications work without drama - has made management paranoid! Has happened 2 times since Oct 2008.

We run RHEL V5.2 with EMC SAN, there 128GB ram and heap of disk. No errors in HP IML no other errors seen.

Thanks,

Robert.
5 REPLIES
smatador
Honored Contributor

Re: NMI error unknown reason b0.

Hi,
There is the same error but not on the same box show on bugzilla
https://bugzilla.redhat.com/show_bug.cgi?id=453445
You could check sometime on bugzilla, if there is a solution perhaps on a newer release of the kernel.
Hope it helps
Robert Walker_8
Valued Contributor

Re: NMI error unknown reason b0.

Gday smatador,

We have RHEL on a server which doesnt go into suspend mode.

Robert.
smatador
Honored Contributor

Re: NMI error unknown reason b0.

Hi,
No suspend mode and not the same box too I think. You could not put and EMC SAN and 128Gb of ram in a laptop :)
For me, this bugzilla shows only that redhat is working on this "sort" of problem in relation to the kernel.
So you could maybe open a case to RH to know more about this issue.


Robert Walker_8
Valued Contributor

Re: NMI error unknown reason b0.

Problem found for those who are interested.

See
http://www11.itrc.hp.com/service/cki/docDisplay.do?docLocale=en&docId=emr_na-c01547608-17
http://www11.itrc.hp.com/service/cki/docDisplay.do?docLocale=en&docId=emr_na-c01583480
http://www11.itrc.hp.com/service/cki/docDisplay.do?docLocale=en&docId=emr_na-c01670591-1

Basically if your BIOS firmware is old ours was 01/30/2008 then you need to update it or you get weird errors on Linux and BSODs on Windows!

Thanks to one and all!

Robert.
Robert Walker_8
Valued Contributor

Re: NMI error unknown reason b0.

As above problem is in BIOS and needed latest version!