Re: assert/crash in __rmqueue() when enabling CONFIG_NUMA

[Nick Piggin]

Martin J. Bligh wrote:
> > Oh that's a 32bit kernel. I don't think the 32bit NUMA has ever worked
> > anywhere but some Summit systems (at least every time I tried it it 
> > blew up on me and nobody seems to use it regularly). Maybe it would be 
> > finally time to mark it CONFIG_BROKEN though or just remove it (even 
> > by design it doesn't work very well) 
>
>
> Bollocks. It works fine, and is tested every single day, on every git
> release, and every -mm tree.

Whatever the case, there definitely does not appear to be sufficient
zone alignment enforced for the buddy allocator. I cannot see how it
could work if zones are not aligned on 4MB boundaries.

Maybe some architectures / subarch code naturally does this for us,
but Ingo is definitely hitting this bug because his config does not
(align, that is).

I've randomly added a couple more cc's.

--
SUSE Labs, Novell Inc.
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