__alloc_pages errors

For some time now various people have seen these errors in their kernel logs:

__alloc_pages: 1-order allocation failed.

(sometimes higher order)

Does anyone have any ideas what causes this? They usually seem to be harmless, though occasionally they coincide with random segfaults.

randolph

   @..@                                         http://www.TauSq.org/
  (----)
 ( >__< )
 ^^ ~~ ^^