I just got two kernel unaligned access faults in a row (well, about 10
minutes apart) with a 2.0_BETA kernel from April 3 :( The machine was
sitting around, not really doing anything strenuous.

CPU 0: fatal kernel trap:

CPU 0    trap entry = 0x4 (unaligned access fault)
CPU 0    a0         = 0x0
CPU 0    a1         = 0x28
CPU 0    a2         = 0x1
CPU 0    pc         = 0xfffffc0000300644
CPU 0    ra         = 0xfffffc00004a1e20
CPU 0    pv         = 0xfffffc0000300618
CPU 0    curlwp    = 0x0

panic: trap
syncing disks... done

Followed by:

CPU 0: fatal kernel trap:

CPU 0    trap entry = 0x4 (unaligned access fault)
CPU 0    a0         = 0xe0f0fefefefe
CPU 0    a1         = 0x29
CPU 0    a2         = 0x1
CPU 0    pc         = 0xfffffc0000300640
CPU 0    ra         = 0xfffffc00004a1e20
CPU 0    pv         = 0xfffffc0000300618
CPU 0    curlwp    = 0x0

panic: trap
Begin traceback...
alpha trace requires known PC =eject=
End traceback...
syncing disks... 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 giving up

Stack trace (from the first one):

(gdb) target kcore netbsd.1.core
panic: trap
#0  0xfffffc00005911ac in dumpsys ()
    at /usr/src.local/sys/arch/alpha/alpha/machdep.c:1223
1223            savectx(&dumppcb);
(gdb) where
#0  0xfffffc00005911ac in dumpsys ()
    at /usr/src.local/sys/arch/alpha/alpha/machdep.c:1223
#1  0xfffffc0000590e28 in cpu_reboot (howto=0, bootstr=0x0)
    at /usr/src.local/sys/arch/alpha/alpha/machdep.c:1044
#2  0xfffffc00004b4318 in panic (fmt=0xfffffc000061b147 "trap")
    at /usr/src.local/sys/kern/subr_prf.c:242
#3  0xfffffc0000598130 in trap (a0=0, a1=40, a2=1, entry=4,
    framep=0xfffffe000835f7d0)
    at /usr/src.local/sys/arch/alpha/alpha/trap.c:604
#4  0xfffffc000030049c in XentUna ()
    at /usr/src.local/sys/arch/alpha/alpha/locore.s:552
#5  0xfffffc00004a1e20 in mi_switch (l=0xfffffc0000d4ca50, newl=0x0)
    at /usr/src.local/sys/kern/kern_synch.c:940
-- 
Name: Dave Huang         |  Mammal, mammal / their names are called /
INet: khym@azeotrope.org |  they raise a paw / the bat, the cat /
FurryMUCK: Dahan         |  dolphin and dog / koala bear and hog -- TMBG
Dahan: Hani G Y+C 28 Y++ L+++ W- C++ T++ A+ E+ S++ V++ F- Q+++ P+ B+ PA+ PL++