Debugging Linux kernel using Kdump
"Kdump" is one of the most attractive keywords in OLS 2006 for me, the others are "Kprobe" and "SystemTap" at the practical point.
http://www.linuxsymposium.org/2006/view_abstract.php?content_key=159
http://lse.sourceforge.net/kdump/
http://people.redhat.com/anderson/
http://linuxisfun.com/kdump/