8.3-STABLE, amd64 crashes on DL380 G6/G7 right after going in multiuser mode and start accepting network connections.

Crash dump files are available here: http://193.194.156.21/_debug/

#0  doadump () at /usr/src/sys/kern/kern_shutdown.c:266


#1  0xffffffff80223b9c in db_fncall (dummy1=Variable "dummy1" is not
available.

) at /usr/src/sys/ddb/db_command.c:548


#2  0xffffffff80223ed1 in db_command (last_cmdp=0xffffffff80d06280,
cmd_table=Variable "cmd_table" is not available.

) at /usr/src/sys/ddb/db_command.c:445


#3  0xffffffff80224120 in db_command_loop () at
/usr/src/sys/ddb/db_command.c:498

#4  0xffffffff802261e9 in db_trap (type=Variable "type" is not
available.

) at /usr/src/sys/ddb/db_main.c:231


#5  0xffffffff80696361 in kdb_trap (type=12, code=0,
tf=0xffffff86c3de2680) at /usr/src/sys/kern/subr_kdb.c:654

#6  0xffffffff8093140d in trap_fatal (frame=0xffffff86c3de2680,
eva=Variable "eva" is not available.

) at /usr/src/sys/amd64/amd64/trap.c:843


#7  0xffffffff8093178e in trap_pfault (frame=0xffffff86c3de2680,
usermode=0) at /usr/src/sys/amd64/amd64/trap.c:764

#8  0xffffffff80931c5e in trap (frame=0xffffff86c3de2680) at
/usr/src/sys/amd64/amd64/trap.c:457

#9  0xffffffff809180b4 in calltrap () at
/usr/src/sys/amd64/amd64/exception.S:228

#10 0xffffffff80653198 in _thread_lock_flags (td=0xffffff000479f8d0,
opts=Variable "opts" is not available.

) at /usr/src/sys/kern/kern_mutex.c:582


#11 0xffffffff806a4401 in propagate_priority (td=0xffffff000479f8d0) at
/usr/src/sys/kern/subr_turnstile.c:210

#12 0xffffffff806a51ef in turnstile_wait (ts=Variable "ts" is not
available.

) at /usr/src/sys/kern/subr_turnstile.c:743
#13 0xffffffff806610d1 in _rw_rlock (rw=0xffffffff80d66088,
file=Variable "file" is not available.
) at /usr/src/sys/kern/kern_rwlock.c:470
#14 0xffffffff807e5ce1 in tcp_input (m=0xffffff003a2cda00, off0=20) at
/usr/src/sys/netinet/tcp_input.c:745
#15 0xffffffff8077bf5c in ip_input (m=0xffffff003a2cda00) at
/usr/src/sys/netinet/ip_input.c:787
#16 0xffffffff8072439e in netisr_dispatch_src (proto=1, source=Variable
"source" is not available.
) at /usr/src/sys/net/netisr.c:859
#17 0xffffffff8071a36c in ether_demux (ifp=0xffffff00049b0000,
m=0xffffff003a2cda00) at /usr/src/sys/net/if_ethersubr.c:899
#18 0xffffffff8071a757 in ether_input (ifp=0xffffff00049b0000,
m=0xffffff003a2cda00) at /usr/src/sys/net/if_ethersubr.c:758
#19 0xffffffff80330e77 in bce_intr (xsc=Variable "xsc" is not available.
) at /usr/src/sys/dev/bce/if_bce.c:6903
#20 0xffffffff8063a824 in intr_event_execute_handlers (p=Variable "p" is
not available.
) at /usr/src/sys/kern/kern_intr.c:1219
#21 0xffffffff8063beb5 in ithread_loop (arg=0xffffff00049c6ba0) at
/usr/src/sys/kern/kern_intr.c:1232
#22 0xffffffff806374bf in fork_exit (callout=0xffffffff8063be20
<ithread_loop>, arg=0xffffff00049c6ba0, frame=0xffffff86c3de2c40)
    at /usr/src/sys/kern/kern_fork.c:876
#23 0xffffffff809185fe in fork_trampoline () at
/usr/src/sys/amd64/amd64/exception.S:602
#24 0x0000000000000000 in ?? ()
#25 0x0000000000000000 in ?? ()
#26 0x0000000000000001 in ?? ()

How-To-Repeat: Upgrade to 8.3-STABLE some similar hardware. Tested on HP Proliant DL380 G6 and HP Proliant DL380 G7