Re: WARNING: at mm/slub.c:3357, kernel BUG at mm/slub.c:3413

[Christoph Lameter]

On Tue, 22 Nov 2011, Markus Trippelsdorf wrote:

> > Given slub is now lockless, validate_slab_slab() is probably very wrong
> > these days.
>
> OK "slabinfo -v" is useless then. But that doesn't invalidate the BUGs
> that I saw during boot. They happend before I could even run slabinfo
> for the first time.

Correct. Also the use of debugging disables the use of cmpxchg_double()
but not this_cpu_cmpxchg() use. See cmpxchg_double_slab() and
kmem_cache_open()s determination of the __CMPXCHG_DOUBLE flag.

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