Kernel 2.6.18-194.8.1.el5 crashing a lot?

Wiley Sanders wsanders at
Mon Jul 19 17:07:53 CDT 2010

Howdy, I have upgraded two hosts, one a brand new R510 running RHEL5 and the
other an old Sun X4100 running CentOS 5.5, to the latest kernel
(kernel-2.6.18-194.8.1.el5, the rpms happen to be identical at this point),
and both have begun rebooting themselves at least every other day. Nothing
is written to syslog on either host.

The Sun's iDrac-equivalent (ILOM) is logging what could be a bad DIMM;

ID = ae : 07/17/2010 : 22:53:01 : OEM sensor : BIOS : Hyper-Transport Sync
Flood Error
ID = af : OEM record e0 : 0000000004130a08e900a07ef4
ID = b0 : OEM record e0 : 01000000048055510000000000
ID = b1 : 07/17/2010 : 22:53:13 : Memory : BIOS : Uncorrectable ECC Node 0
ID = b2 : 07/17/2010 : 22:53:14 : Memory : BIOS : Memory Device Disabled

Which is odd because the Sun was up for almost a year, until I did a "yum
update" a few days ago.

The R510 iDrac doesn't seem to be capturing anything.

Is anyone else seeing this happen? I guess I need to dust off my kernel
debugging skills ....

-Wiley Sanders
 St Marys College of California
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