Re: 2.6.21-rc3-mm2 (oops in move_freepages)

From: Bjorn Helgaas
Date: Wed Mar 14 2007 - 11:11:44 EST


On Wednesday 14 March 2007 03:44, Mel Gorman wrote:
> Please try the following patch from Yasunori Goto.
> ...
> --- current_test.orig/mm/page_alloc.c 2007-03-08 15:44:10.000000000 +0900
> +++ current_test/mm/page_alloc.c 2007-03-08 16:17:29.000000000 +0900
> @@ -707,7 +707,7 @@ int move_freepages(struct zone *zone,
> unsigned long order;
> int blocks_moved = 0;
>
> - BUG_ON(page_zone(start_page) != page_zone(end_page));
> + BUG_ON(page_zone(start_page) != page_zone(end_page - 1));
>

I should have mentioned that I already tried this patch. The
oops still occurs, although now it's when loading the value
pointed to by "end_page - 1" instead of "end_page".
-
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