another vm/pmap alpha panic

[Andrew Gallatin]

panic: pmap_remove_all: pv_table for 8306000 is inconsistent
Stack backtrace:
db_print_backtrace() at db_print_backtrace+0x18
backtrace() at backtrace+0x2c
panic() at panic+0x148
pmap_remove_all() at pmap_remove_all+0xfc
vm_object_page_remove() at vm_object_page_remove+0x1b0
vm_map_delete() at vm_map_delete+0x438
vm_map_remove() at vm_map_remove+0x64
exit1() at exit1+0x950
sys_exit() at sys_exit+0x88
syscall() at syscall+0x398
XentSys() at XentSys+0x64
--- syscall (1) ---
--- user mode ---


Of course, the crashdump is not usable.

Drew