dtrace discuss - Jun 2007 - dtrace and Xorg don''t always mix

I''m wondering if I should file a bug against this or is this just a
case of a user doing something stupid :)

I ran the following script on my desktop:

#!/usr/sbin/dtrace -s

pid9276:::entry
{
        @counting[probefunc] = count();
}


And my Xsession immediately crashed and through me back to the login screen.  My
OS is
5.11 snv_50 i86pc i386 i86pc with a dual core amd chip and 2G or memory.

pid 9276 was Xorg, in case you couldn''t guess.

So is this something that dtrace could/should have prevented or is there no way
to know that this might cause some sort of problem.

Xorg was taking up 40% cpu time so I wanted to see what it was doing :) 
Enabling specific probes seemed to work fine, but when I enabled all of them ...
crash!

Thanks,

Mike
--
This message posted from opensolaris.org

Hi Mike,

That obviously shouldn''t happen. Do you have a core file?

Adam

On Fri, Jun 29, 2007 at 03:01:58PM -0700, Michael E. Corcoran
wrote:
> I''m wondering if I should file a bug against this or is this just
a case of a user doing something stupid :)
> 
> I ran the following script on my desktop:
> 
> #!/usr/sbin/dtrace -s
> 
> pid9276:::entry
> {
>         @counting[probefunc] = count();
> }
> 
> 
> And my Xsession immediately crashed and through me back to the login
screen.  My OS is
> 5.11 snv_50 i86pc i386 i86pc with a dual core amd chip and 2G or memory.
> 
> pid 9276 was Xorg, in case you couldn''t guess.
> 
> So is this something that dtrace could/should have prevented or is there no
way to know that this might cause some sort of problem.
> 
> Xorg was taking up 40% cpu time so I wanted to see what it was doing :) 
Enabling specific probes seemed to work fine, but when I enabled all of them ...
crash!
> 
> Thanks,
> 
> Mike
> --
> This message posted from opensolaris.org
> _______________________________________________
> dtrace-discuss mailing list
> dtrace-discuss at opensolaris.org
-- 
Adam Leventhal, Solaris Kernel Development       http://blogs.sun.com/ahl