Description of problem: Booting RHEL4u3 or RHEL4u4 with eight-sockets of dual-core processes (16 cores total) shows a tainted kernel. Version-Release number of selected component (if applicable): Standard installation kernel for both U3 (2.6.9-34.ELlargesmp) & U4 (2.6.9-42.ELlargesmp) How reproducible: 100% 8-Socket 0% < 8-socket Steps to Reproduce: 1. Perform fresh installation onto 8-socket 2. Boot & login to system 3. cat /proc/sys/kernel/tainted Actual results: [root@localhost ~]# cat /proc/sys/kernel/tainted 16 Expected results: [root@localhost ~]# cat /proc/sys/kernel/tainted 0 Additional info: This is preventing us from passing Red Hat Hardware Certification. This is in regards to the Fabric7 Q80 which is linked above. We have a machine at Red Hat for debugging this very problem.
hi James....any input on the cause of this is welcome :) anyways we apparently have one of these boxes in our lab...however, i'm not able to login to the box. We were able to connect to the management port (via serial), but i couldn't figure out how to get to the main system console. Can you please advise. thanks.
apparently the mce records (an mce is causing taint to be set) are posted in /sys/class/misc/mcelog. Do we have the contents of this directory from a system exhibiting this problem?
Bug has been tracked down to bad memory. This was extremely difficult to isolate because it could only be seen with all eight-sockets with the LargeSMP kernel. Thank you for your effort! Concerning using the Q80 (which will be probable in the future for support issues), there should be a printed copy of the usage manual. If not please send me an email with instructions on where to send a PDF.