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workqueue: sanity check pool->cpu in wq_worker_sleeping()
In theory, pool->cpu is equals to @cpu in wq_worker_sleeping() after worker->flags is checked. And "pool->cpu != cpu" sanity check will help us if something wrong. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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@ -843,7 +843,7 @@ struct task_struct *wq_worker_sleeping(struct task_struct *task, int cpu)
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pool = worker->pool;
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/* this can only happen on the local cpu */
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if (WARN_ON_ONCE(cpu != raw_smp_processor_id()))
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if (WARN_ON_ONCE(cpu != raw_smp_processor_id() || pool->cpu != cpu))
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return NULL;
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/*
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