workqueue: Calling destroy_work_on_stack() to pair with INIT_WORK_ONSTACK()

In case CONFIG_DEBUG_OBJECTS_WORK is defined, it is needed to
call destroy_work_on_stack() which frees the debug object to pair
with INIT_WORK_ONSTACK().

Signed-off-by: Liu, Chuansheng <chuansheng.liu@intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 987293d03ebcf0e6bf1c6b81e8a4e68c7965e903..00df11270325fcbb4d6668ec33a6bd0cf2cc09dc 100644 (file)
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -4776,6 +4776,7 @@ static int workqueue_cpu_down_callback(struct notifier_block *nfb,
 
                /* wait for per-cpu unbinding to finish */
                flush_work(&unbind_work);
+               destroy_work_on_stack(&unbind_work);
                break;
        }
        return NOTIFY_OK;
@@ -4822,6 +4823,7 @@ long work_on_cpu(int cpu, long (*fn)(void *), void *arg)
         */
        __flush_work(&wfc.work);
 
+       destroy_work_on_stack(&wfc.work);
        return wfc.ret;
 }
 EXPORT_SYMBOL_GPL(work_on_cpu);