[dm-devel] Re: [PATCH] Remove softlockup from invalidate_mapping_pages. (might be dm related)

[Andrew Morton <akpm osdl org>]

"Steinar H. Gunderson" <sgunderson bigfoot com> wrote:
>
>  > Which kind of implies that we passed a null (or very small small) `struct
>  > kmem_cache' pointer into kmem_cache_free().  But that doesn't seem like the
>  > sort of thing which will take hours to reproduce.
>  > 
>  > Do you have CONFIG_NUMA set?
> 
>  Hm, yes, for some reason CONFIG_NUMA, CONFIG_K8_NUMA and
>  CONFIG_x86_64_ACPI_NUMA are all set; I guess they're left from the stock
>  config I use at a base. (For those tuning in; this is a dual-core amd64. That
>  might be relevant somehow.)

Please try it without NUMA - we've had a few problems there of late.  If
that fixes it then I have patches for you to test ;)