Re: "spin lock sched lock held by 0xc63b7870 for > 5 seconds" at reboot

From: Kris Kennaway <kris_at_obsecurity.org>
Date: Wed, 8 Mar 2006 16:15:01 -0500
On Wed, Mar 08, 2006 at 03:04:33PM -0500, John Baldwin wrote:
> On Wednesday 08 March 2006 14:59, Kris Kennaway wrote:
> > i386 SMP server, up-to-date current:
> 
> Yes, I know about this one and had sent a workaround to someone
> I thought.  I think the real fix is that we need to disable
> interrupts in cpu_reset() (perhaps earlier, our whole SMP
> shutdown sequence needs thought I think, i.e. I think we
> need to IPI all the CPUs during a non-panic shutdown to ask
> them to go idle and block until that happens and then
> disable interrupts and finish the shutdown).

OK, cool.  I'm happy to test the workaround if you can find it.

Kris

Received on Wed Mar 08 2006 - 20:15:16 UTC

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