Messages in this thread | | | Date | Fri, 21 Apr 2006 13:51:01 +0200 | From | Nick Piggin <> | Subject | Re: assert/crash in __rmqueue() when enabling CONFIG_NUMA |
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On Fri, Apr 21, 2006 at 01:20:50PM +0200, Ingo Molnar wrote: > > * Nick Piggin <npiggin@suse.de> wrote: > > > It would be interesting to know which assertion failed. I guess it > > might be a zone alignment problem -- it would be interesting to turn > > the 2 HOLES_IN_ZONE tests into BUG_ONs, and enable them (ie. move them > > out of HOLES_IN_ZONE). > > ok, i added a couple of printks (see the patch below), and got this: > > zone c1f0a600 (HighMem): > pfn: 00037d00 > zone->zone_start_pfn: 00037e00 > zone->spanned_pages: 00007e00 > zone->zone_start_pfn + zone->spanned_pages: 0003fc00 > ------------[ cut here ]------------ > kernel BUG at mm/page_alloc.c:524! > > so the pfn is 1MB below the zone's start address - not good. You can > find the full bootup log at:
The zones are 2MB aligned, discontig.c seems to do this. They should be 4MB aligned so the page allocator's assumption that zones are contiguous to MAX_ORDER is satisfied.
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