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Date: Fri, 1 Sep 2006 13:50:38 -0700
From: "Kip Macy" <kip.macy@gmail.com>
To: "Julian Elischer" <julian@elischer.org>
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References: <200609011716.30749.vovk@km.ua> <44F85F63.5020508@elischer.org>
	<b1fa29170609011218m1f4eb3ebpafb0365fe2748a45@mail.gmail.com>
Cc: Vyacheslav Vovk <vovk@km.ua>, freebsd-stable@freebsd.org,
	freebsd-threads@freebsd.org
Subject: Re: panic: vm_thread_new: kstack allocation failed
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On closer inspection this means that we've run out of KVA. In
principle it should be handled more gracefully, but the 1GB KVA
limitation is really a 32-bit artifact. It might be worth wading
through the kernel memory allocations to see if a subsystem has gone
beserk.



                                -Kip




On 9/1/06, Kip Macy <kip.macy@gmail.com> wrote:
> I've seen this when running stress2 with a large number of
> incarnations. Why don't we return an error to the user?
>
>                  -Kip
>
> On 9/1/06, Julian Elischer <julian@elischer.org> wrote:
> > Vyacheslav Vovk wrote:
> >
> > can you see how many threads thre are in the system?
> > I think you will have to extract this information frome the zone allocator.
> >
> > I just realised there is no effective limit on kernel threads in the system.
> > probably one could cause this with a fork bomb appoach using forks and
> > thread creation.
> >
> > >Unread portion of the kernel message buffer:
> > >panic: vm_thread_new: kstack allocation failed
> > >cpuid = 3
> > >Uptime: 7d4h30m58s
> > >
> > >
> > >
> > _______________________________________________
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> > http://lists.freebsd.org/mailman/listinfo/freebsd-stable
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> >
>