[Linux-ia64] Bug report: two 'kills' kill the shell

[Linux-ia64] Bug report: two 'kills' kill the shell

[David Robboy]

On MP linux 2.3.47 for ia64 running on a 4-processor system, with this
program:

main()
{
        while(1)
        {
                sleep(2);
                printf("Hello world\n");
        }
}

I started  up 4 of them in background from one shell.  Then went to another
window and started killing them with the 'kill' command (not kill 9, just
plain kill).  The second 'kill' kills the shell, consistently.  It looks
like maybe the shell can handle one SIGCHILD but not two of them.

David Robboy

Re: [Linux-ia64] Bug report: two 'kills' kill the shell

[Jes Sorensen]

>>>>> "David" = David Robboy <robboy@co.intel.com> writes:

David> I started up 4 of them in background from one shell.  Then went
David> to another window and started killing them with the 'kill'
David> command (not kill 9, just plain kill).  The second 'kill' kills
David> the shell, consistently.  It looks like maybe the shell can
David> handle one SIGCHILD but not two of them.

There are some problems with the signal handling in the current
kernels, I suspect thats what you're seeing.

Jes

Re: [Linux-ia64] Bug report: two 'kills' kill the shell

[David Mosberger]

I can't reproduce this on 2.3.99-pre5 (SMP).  Please try the latest
kernel.  There was a fix to asynchronous signal delivery in the 2.3.51
patches.

	--david

>>>>> On Mon, 24 Apr 2000 16:31:40 -0700 (PDT), David Robboy <robboy@co.intel.com> said:

  David> On MP linux 2.3.47 for ia64 running on a 4-processor system,
  David> with this program:

  David> main() { while(1) { sleep(2); printf("Hello world\n"); } }

  David> I started up 4 of them in background from one shell.  Then
  David> went to another window and started killing them with the
  David> 'kill' command (not kill 9, just plain kill).  The second
  David> 'kill' kills the shell, consistently.  It looks like maybe
  David> the shell can handle one SIGCHILD but not two of them.

  David> David Robboy



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