kdb enter when upgrading from 7.1 to current.

Hi,

I get this stacktrace when I try to boot from a Kernel as of today (svn: 
190217).

My setup is a 7.1 install where I'd like to upgrade to current.
The kernel is built cross, amd64 -> sparc64:
make -j4 buildkernel TARGET_ARCH=sparc64 KERNCONF=GENERIC

The target machine itself is a u60, details below.

Does anyone have a pointer to help me, would be great!

TIA,
Andreas

Hit [Enter] to boot immediately, or any other key for command prompt.
Booting [/boot/kernel/kernel]...
jumping to kernel entry at 0xc0080000.
GDB: no debug ports present
KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2009 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
         The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 8.0-CURRENT #2 r190217M: Sat Mar 21 22:27:46 CET 2009
 
andreast_at_deuterium_fbsd.andreas.nets:/export/devel/obj/sparc64/export/devel/
fbsd_svn/src/sys/GENERIC
WARNING: WITNESS option enabled, expect reduced performance.
real memory  = 1610612736 (1536 MB)
avail memory = 1554710528 (1482 MB)
cpu0: Sun Microsystems UltraSparc-II Processor (449.99 MHz CPU)
ispfw: registered firmware <isp_1000>
ispfw: registered firmware <isp_1040>
ispfw: registered firmware <isp_1040_it>
ispfw: registered firmware <isp_1080>
ispfw: registered firmware <isp_1080_it>
ispfw: registered firmware <isp_12160>
ispfw: registered firmware <isp_12160_it>
ispfw: registered firmware <isp_2100>
ispfw: registered firmware <isp_2200>
ispfw: registered firmware <isp_2300>
ispfw: registered firmware <isp_2322>
ispfw: registered firmware <isp_2400>
kbd0 at kbdmux0
nexus0: <Open Firmware Nexus device>
pcib0: <U2P UPA-PCI bridge> mem 
0x1fe00004000-0x1fe00005fff,0x1fe01000000-0x1fe0
10000ff,0x1fe00000000-0x1fe0000cfff irq 2033,2030,2031,2021,2024,2034 on 
nexus0
pcib0: Psycho, impl 0, version 4, IGN 0x1f, bus B, 33MHz
initializing counter-timer
Timecounter "pcib0" frequency 1000000 Hz quality 100
pcib0: DVMA map: 0xfc000000 to 0xffffffff, streaming buffer
pcib0: [FILTER]
pcib0: [FILTER]
pcib0: [GIANT-LOCKED]
pcib0: [ITHREAD]
pcib0: [GIANT-LOCKED]
pcib0: [ITHREAD]
pcib0: [FILTER]
pci0: <OFW PCI bus> on pcib0
ebus0: <PCI-EBus2 bridge> mem 
0x70000000-0x70ffffff,0x71000000-0x717fffff at dev
ice 1.0 on pci0
auxio0: <Sun Auxiliary I/O> addr 
0x1400726000-0x1400726003,0x1400728000-0x140072
8003,0x140072a000-0x140072a003,0x140072c000-0x140072c003,0x140072f000-0x140072f0
03 on ebus0
ebus0: <power> addr 0x1400724000-0x1400724003 (no driver attached)
ebus0: <SUNW,pll> addr 0x1400504000-0x1400504002 (no driver attached)
ebus0: <sc> addr 0x1400500000-0x1400500007 (no driver attached)
scc0: <Siemens SAB 82532 dual channel SCC> addr 
0x1400400000-0x140040007f irq 43
  on ebus0
scc0: [FILTER]
uart0: <SAB 82532 v3.2, channel A> on scc0
uart0: [FILTER]
uart0: CTS oflow
uart0: console (9600,n,8,1)
uart1: <SAB 82532 v3.2, channel B> on scc0
uart1: [FILTER]
uart1: CTS oflow
uart2: <16550 or compatible> addr 0x14003083f8-0x14003083ff irq 41 on ebus0
uart2: [FILTER]
uart2: keyboard (1200,n,8,1)
uart2: keyboard not present
uart3: <16550 or compatible> addr 0x14003062f8-0x14003062ff irq 42 on ebus0
uart3: [FILTER]
ebus0: <ecpp> addr 
0x14003043bc-0x14003043cb,0x1400300398-0x1400300399,0x1400700
000-0x140070000f irq 34 (no driver attached)
ebus0: <fdthree> addr 
0x14003023f0-0x14003023f7,0x1400706000-0x140070600f,0x1400
720000-0x1400720003 irq 39 (no driver attached)
eeprom0: <EEPROM/clock> addr 0x1400000000-0x1400001fff on ebus0
eeprom0: model mk48t59
ebus0: <flashprom> addr 0x1000000000-0x10000fffff (no driver attached)
ebus0: <SUNW,CS4231> addr 
0x1400200000-0x14002000ff,0x1400702000-0x140070200f,0x
1400704000-0x140070400f,0x1400722000-0x1400722003 irq 35,36 (no driver 
attached)
hme0: <Sun HME 10/100 Ethernet> mem 0x100000-0x107fff at device 1.1 on pci0
miibus0: <MII bus> on hme0
qsphy0: <QS6612 10/100 media interface> PHY 1 on miibus0
qsphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
hme0: Ethernet address: 08:00:20:a3:71:69
hme0: [ITHREAD]
sym0: <875> port 0x1000-0x10ff mem 0x108000-0x1080ff,0x10a000-0x10afff 
at device
  3.0 on pci0
sym0: No NVRAM, ID 7, Fast-20, SE, parity checking
sym0: [ITHREAD]
sym1: <875> port 0x1400-0x14ff mem 0x10c000-0x10c0ff,0x10e000-0x10efff 
at device
  3.1 on pci0
sym1: No NVRAM, ID 7, Fast-20, SE, parity checking
sym1: [ITHREAD]
pcib1: <U2P UPA-PCI bridge> mem 
0x1fe00002000-0x1fe00003fff,0x1fe01800000-0x1fe0
18000ff,0x1fe00000000-0x1fe0000cfff irq 2032,2030,2031,2021,2024,2034 on 
nexus0
pcib1: Psycho, impl 0, version 4, IGN 0x1f, bus A, 66MHz
pcib1: [FILTER]
pci1: <OFW PCI bus> on pcib1
pci1: <bridge> at device 1.0 (no driver attached)
creator0: <Creator3D> mem 
0x1fc00000000-0x1fc000003ff,0x1fc00400000-0x1fc005ffff
f,0x1fc00600000-0x1fc007fffff,0x1fc01000000-0x1fc013fffff,0x1fc01400000-0x1fc017
fffff,0x1fc01800000-0x1fc01bfffff,0x1fc01c00000-0x1fc01ffffff,0x1fc02000000-0x1f
c02ffffff,0x1fc03000000-0x1fc03ffffff,0x1fc04000000-0x1fc043fffff,0x1fc04400000-
0x1fc047fffff,0x1fc04800000-0x1fc04bfffff,0x1fc04c00000-0x1fc04ffffff,0x1fc05000
000-0x1fc05ffffff,0x1fc06000000-0x1fc07ffffff,0x1fc09000000-0x1fc097fffff,0x1fc0
9800000-0x1fc09ffffff,0x1fc0a000000-0x1fc0affffff,0x1fc0b000000-0x1fc0b7fffff,0x
1fc0b800000-0x1fc0bffffff,0x1fc0c000000-0x1fc0c3fffff,0x1fc0c800000-0x1fc0cfffff
f,0x1fc0d000000-0x1fc0d7fffff,0x1fc0d800000-0x1fc0dffffff irq 1925 on nexus0
creator0: resolution 1152x900
syscons0: <System console> on nexus0
syscons0: Unknown <16 virtual consoles, flags=0x100>
Timecounter "tick" frequency 449992390 Hz quality 1000
Timecounters tick every 1.000 msec
Waiting 5 seconds for SCSI devices to settle
(probe6:sym0:0:6:0): TEST UNIT READY. CDB: 0 0 0 0 0 0
(probe6:sym0:0:6:0): CAM Status: SCSI Status Error
(probe6:sym0:0:6:0): SCSI Status: Check Condition
(probe6:sym0:0:6:0): NOT READY asc:3a,0
(probe6:sym0:0:6:0): Medium not present
(probe6:sym0:0:6:0): Unretryable error
da1 at sym0 bus 0 target 1 lun 0
da1: <SEAGATE ST39102LCSUN9.0G 0828> Fixed Direct Access SCSI-2 device
da1: 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
da1: Command Queueing Enabled
da1: 8637MB (17689267 512 byte sectors: 255H 63S/T 1101C)
da0 at sym0 bus 0 target 0 lun 0
da0: <SEAGATE ST39102LCSUN9.0G 0828> Fixed Direct Access SCSI-2 device
da0: 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
da0: Command Queueing Enabled
da0: 8637MB (17689267 512 byte sectors: 255H 63S/T 1101C)
cd0 at sym0 bus 0 target 6 lun 0
cd0: <TOSHIBA XM6201TASUN32XCD 1103> Removable CD-ROM SCSI-2 device
cd0: 10.000MB/s transfers (10.000MHz, offset 16)
cd0: Attempt to query device size failed: NOT READY, Medium not present
WARNING: WITNESS option enabled, expect reduced performance.
GEOM: da0: adding VTOC8 information.
GEOM: da1: adding VTOC8 information.
Trying to mount root from ufs:/dev/da0a
Loading configuration files.
kernel dumps on /dev/da0b
Entropy harvesting: interrupts ethernet point_to_pointpanic: trap: 
memory addres
s not aligned
cpuid = 0
KDB: enter: panic
[thread pid 41 tid 100042 ]
Stopped at      kdb_enter+0x80: ta              %xcc, 1
db>
db> bt
Tracing pid 41 tid 100042 td 0xfffff800213dc370
panic() at panic+0x20c
trap() at trap+0x570
-- memory address not aligned sfar=0xf2fe2877 sfsr=0x40029 %o7=0xc06654b8 --
stack_capture() at stack_capture+0x114
stack_save_td() at stack_save_td+0x60
sysctl_kern_proc_kstack() at sysctl_kern_proc_kstack+0x36c
sysctl_root() at sysctl_root+0x1ec
userland_sysctl() at userland_sysctl+0x174
__sysctl() at __sysctl+0x70
syscall() at syscall+0x2f0
-- syscall (202, FreeBSD ELF64, __sysctl) %o7=0x101628 --
userland() at 0x40445788
user trace: trap %o7=0x101628
pc 0x40445788, sp 0x7fdffffd031
pc 0x101ef8, sp 0x7fdffffd971
pc 0x102ac4, sp 0x7fdffffdaf1
pc 0x100ef0, sp 0x7fdffffe451
pc 0x40208094, sp 0x7fdffffe511
done