Date: Mon, 11 Oct 2004 16:27:17 -0700
From: Andrew Morton <akpm@osdl.org>
To: joshk@triplehelix.org (Joshua Kwan)
Cc: roland@redhat.com, linux-kernel@vger.kernel.org
Subject: Re: Weirdness with suspending jobs in 2.6.9-rc3
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joshk@triplehelix.org (Joshua Kwan) wrote:
>
> On Sun, Oct 10, 2004 at 12:45:24AM -0700, Andrew Morton wrote:
> > Useful, thanks.
> 
> Maybe this is useful too?
> 
> Started make on that test Makefile, and
> 
> % strace -p 31810
> Process 31810 attached - interrupt to quit
> wait4(-1073750280, NULL, 0, NULL)       = -1 ECHILD (No child processes)

Are you able to strace the same workload on an earlier kernel and work out
whether `make' is still passing in a funny PID and if so, what the kernel's
response is?


> it then immediately proceeded to give the old 'no child processes.
> Stop.' thing.
> 
> Strangely, the bug is experienced only sporadically when using make -j2
> on a kbuild. Maybe that's just a coincidence.
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