Commit ca4b3f30 authored Mar 22, 2013 by Jianguo Wu Committed by Linus Torvalds Mar 22, 2013

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



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>

parent 96e7d7a1

mm/memory_hotplug.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -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);
		}