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On 12/20/06, Mike Galbraith <efault@gmx.de> 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. In the original post, I also mangled the recommended ps command: ps -Ccloninator -mwostat,ppid,pid,tid,nlwp,pending,sigmask,sigignore,caught,wchan Leave out pid,tid,nlwp if you need to save screen space, like so: ps -Ccloninator -mwostat,ppid,pending,sigmask,sigignore,caught,wchan (note: procps versions prior to 3.2.7 are mostly fine, but will mess up the PENDING column for any single-threaded processes you get) This is fun to look at: watch ps -Ccloninator fostat,ppid,wchan:9,comm > > Normally, when a process dies it becomes a zombie. > > If the parent dies (before or after the child), the child > > is adopted by init. Init will reap the child. > > > > The program included below DOES NOT get reaped. > > While true wasn't a great test recommendation :) 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. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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