Messages in this thread Patch in this message | | | Date | Wed, 30 Sep 2015 17:33:42 +0800 | From | Xishi Qiu <> | Subject | [PATCH] mm: fix overflow in find_zone_movable_pfns_for_nodes() |
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If user set "movablecore=xx" to a large number, corepages will overflow, this patch fix the problem.
Signed-off-by: Xishi Qiu <qiuxishi@huawei.com> --- mm/page_alloc.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 48aaf7b..af3c9bd 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5668,6 +5668,7 @@ static void __init find_zone_movable_pfns_for_nodes(void) */ required_movablecore = roundup(required_movablecore, MAX_ORDER_NR_PAGES); + required_movablecore = min(totalpages, required_movablecore); corepages = totalpages - required_movablecore; required_kernelcore = max(required_kernelcore, corepages); -- 2.0.0
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