i386 cvsupped as of yesterday
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KDB: debugger backends: ddb
KDB: current backend: ddb
131072K of memory above 4GB ignored
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FreeBSD 7.2-STABLE #28: Wed Jul 15 08:11:56 GMT 2009
    root@psg.com:/usr/obj/usr/src/sys/PSG
kmem_suballoc: bad status return of 3.
panic: kmem_suballoc
cpuid = 0
KDB: enter: panic
[thread pid 0 tid 0 ]
Stopped at      kdb_enter_why+0x3a:     movl    $0,kdb_why
db> trace
Tracing pid 0 tid 0 td 0xc07fad60
kdb_enter_why(c078b1b8,c078b1b8,c079e7a8,c0c20d04,0,...) at kdb_enter_why+0x3a
panic(c079e7a8,3,0,0,c07fb8a0,...) at panic+0x138
kmem_suballoc(c1071000,c07fb8a0,c07fb8a4,40000000,1,...) at kmem_suballoc+0x91
kmeminit(0,c1ec00,c1ec00,c1e000,c25000,...) at kmeminit+0x18a
mi_startup() at mi_startup+0xa6
begin() at begin+0x2c
db>