kdb panic

[david reid]

Just cvsup'd and rebuild/installed to latest -CURRENT and now machine is 
plagued by panics,

Memory modified after free 0xffffff000bf91000(2040) val=dead40de @ 
0xffffff000bf91214
panic: Most recently used by none

cpuid = 0
KDB: enter: panic
[thread pid 28035 tid 100092 ]
Stopped at      kdb_enter+0x2f: nop
db>

The keyboard is unresponsive so I can't get any more details. In fact 
the only thing that I can do is power cycle the machine. :-( Any ideas?

david