On Thu, May 03, 2007 at 01:15:15AM -0700, Andrew Morton wrote:
> That all seems to work as intended.
> However with NR_CPUS=8 SPLIT_PTLOCK_CPUS=4, enabling SLUB=y crashes the
> machine early in boot.
> Too early for netconsole, no serial console. Wedges up uselessly with
> CONFIG_XMON=n, does mysterious repeated uncontrollable exceptions with
> CONFIG_XMON=y. This is all fairly typical for a powerpc/G5 crash :(
> However I was able to glimpse some stuff as it flew past. Crash started in
> flush_old_exec and ended in pgtable_free_tlb -> kmem_cache_free. I don't know
> how to do better than that I'm afraid, unless I'm to hunt down a PCIE serial
> card, perhaps.
I've seen this crash in flush_old_exec() before. ISTR it being due to
slub vs. pagetable alignment or something on that order.
-- wli
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