memory.c - bad pmd - x86_64

[Dave Jones]

On Wed, May 11, 2005 at 05:45:38PM -0700, Peter J. Stieber wrote:
 > I have a system with a Tyan 2885 motherboard (S2885-ANRF) that uses dual
 > Opteron 244 processors. Each processor has 1 GB of memory for a total
 > of 2 GB. I am using a SATA HD. I am running the latest stock release of
 > the SMP version of the FC3 kernel for x86_64. uname -a output follows:
 > 
 > Linux maggie 2.6.11-1.14_FC3smp #1 SMP Thu Apr 7 19:36:23 EDT 2005
 > x86_64 x86_64 x86_64 GNU/Linux
 > 
 > The computer is worldly node for a small cluster of computers. It is
 > resposible for building a code that is run on the cluster. A shell
 > script is used to start the build process. Occasionally when the script
 > is started it crashes and the following messages are place in
 > /var/log/messages (sorry for the ugly line wrap):
 > 
 > May 11 16:26:56 maggie kernel: mm/memory.c:97: bad pmd
 > ffff81002f6a4000(0000000000000008).

Please grab the latest test kernel from 
http://people.redhat.com/davej/kernels/Fedora/FC3
and try to reproduce this. It contains debugging code that
hopefully will help nail this.

		Dave