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

[Ingo Molnar <mingo@elte.hu>]

* Pekka Enberg <penberg@cs.helsinki.fi> wrote:

> >  >  it to build on .25) but that didnt solve the problem either.
> 
> On Fri, Apr 11, 2008 at 11:21 AM, Pekka Enberg <penberg@cs.helsinki.fi> wrote:
> >  As mentioned privately, I suspect it's the page allocator changes that
> >  went into 2.6.24. Mel, Christoph, any ideas?
> 
> So I'm thinking it's probably related to this patch:
> 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=523b945855a1427000ffc707c610abe5947ae607
> 
> As kmalloc_node() in setup_cpu_cache() returns NULL, it seems likely 
> to be due to the use of GFP_THISNODE in cache_alloc_refill() when 
> calling cache_grow() and that the semantics changed. No idea why page 
> allocator would think your UMA "local node" has no memory though.

but ... as i said it in my report, this is a regression since v2.6.24 - 
v2.6.24 (and a whole bunch of commits since then, i listed the IDs) 
booted up fine. The commit ID you mention is: v2.6.23-4345-g523b945, way 
earlier than the good commit IDs.

so this is a recent regression.

	Ingo