UltraSPARC III... Stability issue ?

[BERTRAND Joël <joel.bertrand%systella.fr@localhost>]

        Hello,

	I have upgraded my -current installation on a Blade2000 (SMP, 
UltraSPARC III@750). With 6.99.31 kernel, I don't remember if I have 
seen spurious reboot. With 6.1.2 and 6.1.3, this system was unusable.

	Today, I have tried to make "make -j4 clean" on my pkgsrc tree. And 
system reboots with :

trap type 0x68: cpu 1, pc=410657c0 npc=410657ac 
pstate=0xffffffff99820092<,PEF,IE>
Skipping crash dump on recursive panic
panic: +fast data access MMU miss
cpu1: Begin traceback...
cpu1: End traceback...
cpu0: shutting down
cpu1: rebooting

        Last week, I have run some ./build.sh -j2 or -j4 without any trouble.

	System reboots without any other information. I'm not at home, system 
has automatically rebooted and I don't have more information.

Running kernel is :
NetBSD hilbert.systella.fr 6.99.36 NetBSD 6.99.36 (GENERIC) #0: Sun Mar 
16 23:52:46 CET 2014 
huseman%hilbert.systella.fr@localhost:/usr/objdir/sys/arch/sparc64/compile/GENERIC 
sparc64

        Regards,

        JKB