Re: CONFIG_SLAB_DEBUG and NUMA API

[R. J. Wysocki]

On Tuesday 06 of July 2004 23:03, Andi Kleen wrote:
> On Mon, Jul 05, 2004 at 11:49:45PM -0700, Andrew Morton wrote:
> > Andi Kleen <ak@xxxxxx> wrote:
> > > I tested 2.6.7-mm6 with NUMA on with CONFIG_SLAB_DEBUG and I didn't see
> > > any oopses. Do you have a recipe to reproduce them?
> >
> > Still happens here.  Booting SLES9.1 with the attached config.
>
> [...]
>
> Here's a patch. The problem was that the kernel exit would allocate
> memory to send exit signals after the local mempolicy was already freed,
> but not zeroed.  When the allocator tried to grab more memory it would
> fall over.
>
> -Andi
>
> -------------------------------------------------------------
>
> Move the memory policy freeing to later in exit to make sure
> the last memory allocations don't use an uninitialized policy

It fixed the problems that I had reported on both 2.6.7-mm6 and 2.6.7-bk18.  
Thanks a lot,

rjw

-- 
Rafael J. Wysocki
----------------------------
For a successful technology, reality must take precedence over public 
relations, for nature cannot be fooled.
					-- Richard P. Feynman
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