Re: CPU hotplug broken in 2.6.8-rc2 ?

From: Srivatsa Vaddagiri
Date: Wed Aug 04 2004 - 05:06:12 EST


On Tue, Aug 03, 2004 at 04:07:20PM -0500, Nathan Lynch wrote:
> BUG_ON(rq->nr_running != 0);
>
> I can reproduce this on both ppc64 and i386. Does anyone know why this
> is happening?

I guess some task is still stuck with the dead CPU. Can you put a breakpoint on the BUG_ON
and see the ps output (in kdb) to see which task is that when you hit the breakpoint?

I will also try debugging the 2.6.8-rc2 CPU Hotplug woes as soon as I can.


--


Thanks and Regards,
Srivatsa Vaddagiri,
Linux Technology Center,
IBM Software Labs,
Bangalore, INDIA - 560017
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