Re: [bug] mm/slab.c boot crash in -git, "kernel BUG atmm/slab.c:2103!"

[Ingo Molnar]

* Christoph Lameter <clameter@xxxxxxx> wrote:

> On Fri, 11 Apr 2008, Pekka Enberg wrote:
> 
> > slab bug and I don't see any recent changes to the page allocator
> > either that would explain this.
> 
> I also have an internal report that x86-git causes boot to fail with 
> an 8p if one starts with a x86_64 config file and then converts to 
> x86_32. Somehow the NR_CPUS is set to 255 in that case. Could this 
> exhaust memory? I guess the per cpu cleanup work may figure in that 
> area. Mike?

how about reading my bugreport that you replied to:

   http://lkml.org/lkml/2008/4/11/34

It gives an answer to your question, trivially so. It includes an easy 
link to the very config that failed:

   http://redhat.com/~mingo/misc/config-Thu_Apr_10_10_41_16_CEST_2008.bad

which would tell you:

   CONFIG_NR_CPUS=8

so no, it's not 255 CPUs exhausing RAM ...

	Ingo
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