dtrace discuss - Apr 2006 - Enable anonymous tracing make Sunw2100z hang during boot

I have a sunw2100z (dual AMD) 2GB memory, I refresh installed nvx_35 on scsi
disk (on board controller), then I enabled anon tracing

fbt::xxx_attach:entry
{
     self->trace = 1;
}
fbt:::
/self->trace/
{}

fbt::xxx_attach:return
{
   self->trace = 0;
}

xxx_attach is HBA driver''s attach entry point.
#dtrace -AFs xxx.d
# reboot

then reboot gives enabling probe 0.....
WARNING: cpu1 failed to start
... system hang here.

I tried to install nvx_35 again,  I got the same problem. 
any ideas. 

Without anon tracing enabled, no any problem.

THank
 
 
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I was trying to enable kmdb and see if I can collect the core in system hang.
I added -kd in GRUB maunal entry in kernel line. 
the system is hang and I got the following warning:

NOTICE:enabling probe 0 ...
...
wARNING: failed to decompress CTF data for hubd: Buffer does not contain CTF
data

... hang ...
 
 
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I was able to reproduce the failure of CPU 1 starting with anonymous tracing
enabled, although after that, the system proceeded to boot (with the single
CPU).

The bits on the test machine I was using are just a few days newer than build
35. I''ll continue to investigate as well...

Thanks,
-Eric
 
 
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