Hi,

   I get a kernel panic each time I'm rebooting my system on all
recent 2.6.0testx kernels (cpu is an Athlon 1800XP, kernel compiled with
preempt and ACPI ; config and dmesg is attached).

   This time, I got tired of seeing this and finally installed kmsgdump
in order to collect some data, available in messages.txt (*)

For my particular case, X was not loaded: I just logged in in console
mode and did a reboot. No nvidia or other binary driver loaded. Any hint 
on tracking down this bug is appreciated (I can compile my kernel with 
additional debugging options if required).

Regards,

Vincent

(*) BTW: something like kmsgdump should really one day be included in 
mainline kernels, serial console is often not an option for people like 
me running a single machine ; writting an oops by hand is not fun... and 
often, even if the crash does not occur while running an X server, the 
beginning of the oops is not accessible on the console any more...