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Crash with latest 5.0_BETA

How can I get something useful out of this core file? My sources were updated 30 minutes ago so this is the latest netbsd-5 code...


NetBSD 5.0_BETA (FW) #2: Wed Nov 26 17:47:32 EET 2008
total memory = 2042 MB
avail memory = 1964 MB
timecounter: Timecounters tick every 10.000 msec
timecounter: Timecounter "i8254" frequency 1193182 Hz quality 100
SMBIOS rev. 2.5 @ 0x7fb9c000 (55 entries)
Dell Inc. PowerEdge R300

ROOT fw:/usr/src/sys/arch/amd64/compile/FW> dmesg -M /var/crash/netbsd.7.core
dmesg: kvm_read: Undefined error: 0
dmesg: kvm_read:

ROOT fw:/usr/src/sys/arch/amd64/compile/FW> gdb netbsd.gdb
GNU gdb 6.5
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "x86_64--netbsd"...

(gdb) target kvm /var/crash/netbsd.7.core
#0 0xffffffff8050914a in cpu_reboot (howto=260, bootstr=<value optimized out>)
    at ../../../../arch/amd64/amd64/machdep.c:694
694                     dumpsys();
(gdb) bt
#0 0xffffffff8050914a in cpu_reboot (howto=260, bootstr=<value optimized out>)
    at ../../../../arch/amd64/amd64/machdep.c:694
#1  0xffffffff804564cb in panic (
    fmt=0xffffffff80989fbf <Address 0xffffffff80989fbf out of bounds>)
    at ../../../../kern/subr_prf.c:255
#2  0xffffffff8050a8f4 in trap (frame=0xffff8000496c3230)
    at ../../../../arch/amd64/amd64/trap.c:256
#3  0xffffffff80100eea in calltrap ()
#4 0xffffffff8045539b in kprintf (fmt0=0x0, oflags=Cannot access memory at address 0xffffffffffffff7c
    at ../../../../kern/subr_prf.c:1460
Previous frame inner to this frame (corrupt stack?)

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