diff options
| author | Kani, Toshimitsu <toshi.kani@hpe.com> | 2017-02-08 10:27:45 +1100 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2017-02-09 21:53:05 +1100 |
| commit | e654adb872e556fa6190f7eec4b2758eab2b9a5c (patch) | |
| tree | 5f61f9be4fb19d3bf4945ad7f9f3966938a3a52c /mm | |
| parent | 391d91cf117df2214f13ac122b46169a8f06895d (diff) | |
mm-fix-a-overflow-in-test_pages_in_a_zone-fix
remove assumption that end_pfn is aligned by MAX_ORDER_NR_PAGES
Cc: zhong jiang <zhongjiang@huawei.com>
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory_hotplug.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 41878b340271..11581f4cfbb4 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1512,7 +1512,7 @@ int test_pages_in_a_zone(unsigned long start_pfn, unsigned long end_pfn, while ((i < MAX_ORDER_NR_PAGES) && !pfn_valid_within(pfn + i)) i++; - if (i == MAX_ORDER_NR_PAGES) + if (i == MAX_ORDER_NR_PAGES || pfn + i >= end_pfn) continue; page = pfn_to_page(pfn + i); if (zone && page_zone(page) != zone) |