Re: BUG: wedged processes, test program supplied

[Mike Galbraith]

On Wed, 2006-12-20 at 01:05 -0500, Albert Cahalan wrote:
> On 12/20/06, Mike Galbraith <efault@xxxxxx> wrote:
> > On Tue, 2006-12-19 at 21:46 -0500, Albert Cahalan wrote:
> > > Somebody PLEASE try this...
> >
> > I was having enough fun with cloninator (which was whitespace munged
> > btw).
> 
> Anything stuck? Besides refusing to die, that beast slays debuggers
> left and right. I just need to add execve of /proc/self/exe and a massive
> storm of signals on the alternate stack.

Usually, I can kill the misbehaving strace or abandoned cloninators if
it decides to take a hike, but sometimes it leaves corpses lying around.

> Oh. I wanted to be sure you'd see the problem. Did you have
> some... difficulty? A plain old ^C should make things stop.
> The second test program is like the first, but missing SIGCHLD
> >from the clone flags, and hopefully not whitespace-mangled.
> 
> Note that the test program is not normally a fork bomb.
> It self-limits itself to 42 tasks via a lock in shared memory.
> If things are working OK, you should see no more than
> about 60 tasks.

I didn't take any countermeasures.. had ~27000 zombies.

	-Mike

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/