On Thu, Jun 14, 2012 at 11:44:51AM +0800, 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@xxxxxxxxxx> > Signed-off-by: Jiang Liu <liuj97@xxxxxxxxx> > Acked-by: Mel Gorman <mgorman@xxxxxxx> -- Mel Gorman SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>