PJS = Peter J. Stieber PJS>> I have a system with a Tyan 2885 motherboard PJS>> (S2885-ANRF) that uses dual Opteron 244 processors. PJS>> Each processor has 1 GB of memory for a total of PJS>> 2 GB. I am using a SATA HD. I am running the latest PJS>> stock release of the SMP version of the FC3 kernel PJS>> for x86_64. uname -a output follows: PJS>> PJS>> Linux maggie 2.6.11-1.14_FC3smp #1 SMP PJS>> Thu Apr 7 19:36:23 EDT 2005 PJS>> x86_64 x86_64 x86_64 GNU/Linux PJS>> PJS>> The computer is worldly node for a small cluster of PJS>> computers. It is resposible for building a code that PJS>> is run on the cluster. A shell script is used to PJS>> start the build process. Occasionally when the script PJS>> is started it crashes and the following messages are PJS>> place in /var/log/messages (sorry for the ugly line PJS>> wrap): PJS>> PJS>> May 11 16:26:56 maggie kernel: mm/memory.c:97: PJS>> bad pmd ffff81002f6a4000(0000000000000008).
DJ = Dave Jones DJ> Please grab the latest test kernel from DJ> http://people.redhat.com/davej/kernels/Fedora/FC3 DJ> and try to reproduce this. It contains debugging code DJ> that hopefully will help nail this.
Thanks Dave. I loaded the kernel:
Linux maggie 2.6.11-1.24_FC3smp #1 SMP Tue May 10 19:12:22 EDT 2005 x86_64 x86_64 x86_64 GNU/Linux
I'm trying to force the problem to occur, but as was reported on the linux-kenel list, it isn't obvious how to make the problem rear its ugly head.
Are you looking for /var/log/messages output when it happens?
Thanks again for the help. I'm very willing to serve as a debug test bed as my worldly node is a Tyan S2885 Thunder K8W motherboard running the SMP version of x86_64 FC3 and my compute nodes are Tyan S2850 Tomcat K8S motherboards running the non-SMP version of x86_64 FC3.
Will reply to this thread when the problem pops up, Pete
