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

[Steinar H. Gunderson]

On Sat, May 13, 2006 at 08:24:09AM -0700, Andrew Morton wrote:
> (for dm-devel: 2.6.15.4 runs OK on this machine with the same config) (yes?)

I can't really assert that; it doesn't _seem_ to be bothered the same way,
but I've only run it for an hour or so to compile the other kernels.

Just to be 100% sure it's not overheating or such, I've turned off all fan
control in the BIOS. But then again, overheating sounds really far off; the
machine is in a cooled server room (20 degrees Celsius), and has lots of fans
making sure the air flow is good.

> Which patch?  remove-softlockup-from-invalidate_mapping_pages.patch?  No,
> that won't have caused this.  But then, it's not really obvious what this
> crash is.

OK.

> 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.)

/* Steinar */
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