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SubjectRe: [PATCH] memory hotplug: fix invalid memory access caused by stale kswapd pointer
(2012/06/14 12:44), Jiang Liu wrote:
> Function kswapd_stop() will be called to destroy the kswapd work thread
> when all memory of a NUMA node has been offlined. But kswapd_stop() only
> terminates the work thread without resetting NODE_DATA(nid)->kswapd to NULL.
> The stale pointer will prevent kswapd_run() from creating a new work thread
> when adding memory to the memory-less NUMA node again. Eventually the stale
> pointer may cause invalid memory access.
>
> Signed-off-by: Xishi Qiu<qiuxishi@huawei.com>
> Signed-off-by: Jiang Liu<liuj97@gmail.com>
>

Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>




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