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mm/hotplug: only free wait_table if it's allocated by vmalloc

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zone->wait_table may be allocated from bootmem, it can not be freed.

Signed-off-by: Jianguo Wu <wujianguo@huawei.com>
Reviewed-by: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jianguo Wu 2013-03-22 15:04:50 -07:00 committed by Linus Torvalds
parent 96e7d7a1e0
commit ca4b3f302c
1 changed files with 5 additions and 1 deletions
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6
mm/memory_hotplug.c
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@ -1779,7 +1779,11 @@ void try_offline_node(int nid)
for (i = 0; i < MAX_NR_ZONES; i++) {
struct zone *zone = pgdat->node_zones + i;
if (zone->wait_table)
/*
* wait_table may be allocated from boot memory,
* here only free if it's allocated by vmalloc.
*/
if (is_vmalloc_addr(zone->wait_table))
vfree(zone->wait_table);
}