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

* 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


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