Unverified Commit 956ddbbf authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!11551 mm/memory_hotplug: prevent accessing by index=-1 

Merge Pull Request from: @ci-robot 
 
PR sync from: Wupeng Ma <mawupeng1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/EJ6WXJJNB6EXJ743YVFCI6BLRYBKM2JT/ 
 
https://gitee.com/openeuler/kernel/issues/IAQT9Q 
 
Link:https://gitee.com/openeuler/kernel/pulls/11551

 

Reviewed-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: default avatarZhang Peng <zhangpeng362@huawei.com>
parents 292de975 c0c4a1e4

mm/memory_hotplug.c

+2 −1
Original line number Diff line number Diff line
@@ -845,7 +845,6 @@ static bool auto_movable_can_online_movable(int nid, struct memory_group *group, 
	unsigned long kernel_early_pages, movable_pages;

	struct auto_movable_group_stats group_stats = {};

	struct auto_movable_stats stats = {};

	pg_data_t *pgdat = NODE_DATA(nid);

	struct zone *zone;

	int i;
@@ -856,6 +855,8 @@ static bool auto_movable_can_online_movable(int nid, struct memory_group *group, 
			auto_movable_stats_account_zone(&stats, zone);

	} else {

		for (i = 0; i < MAX_NR_ZONES; i++) {

			pg_data_t *pgdat = NODE_DATA(nid);



			zone = pgdat->node_zones + i;

			if (populated_zone(zone))

				auto_movable_stats_account_zone(&stats, zone);