[parisc-linux] Re: Expect defunct, kill -9 panics kernel?

[John David Anglin]

> Is this the usual behaviour you see?
> 
> 1. I run the gcc testsuite.
> 2. expect dies, leaving a defunct process.
> 3. Killing another expect panics the kernel.

It similar to the behavior that I see.  I don't usually see this
with expect though.  Possibly, this is because I use my own build
of expect linked tcl8.3.

I see this behavior quite consistently on my c3750 if I

1.  Run the gcc libjava testsuite.
2.  Usually, there a set of processes (e.g., Process_3) left running
    after the testsuite ends.  These processes are not defunct and
    load the processor.  I can kill all but the oldest thread.
3.  Killing the oldest thread panics the kernel.  Sometimes the system
    reboots.  However, the system often hangs doing endless panics.

I suspect a timing issue as the c3750 is the fastest processor that
I test on.  I don't see as many problems with the libjava testsuite
on slower hardware.  At one time, I thought this might be a 32 versus
64-bit issue, but I see the same problems running a 64-bit kernel.

Dave
-- 
J. David Anglin                                  dave.anglin at nrc-cnrc.gc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6602)