This is a note to let you know that I've just added the patch titled workqueue: Move the position of debug_work_activate() in __queue_work() to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: workqueue-move-the-position-of-debug_work_activate-i.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 678be0e8b383ccccb6fa9458fa9136ba3d046dc6 Author: Zqiang <qiang.zhang@xxxxxxxxxxxxx> Date: Thu Feb 18 11:16:49 2021 +0800 workqueue: Move the position of debug_work_activate() in __queue_work() [ Upstream commit 0687c66b5f666b5ad433f4e94251590d9bc9d10e ] The debug_work_activate() is called on the premise that the work can be inserted, because if wq be in WQ_DRAINING status, insert work may be failed. Fixes: e41e704bc4f4 ("workqueue: improve destroy_workqueue() debuggability") Signed-off-by: Zqiang <qiang.zhang@xxxxxxxxxxxxx> Reviewed-by: Lai Jiangshan <jiangshanlai@xxxxxxxxx> Signed-off-by: Tejun Heo <tj@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 205c3131f8b0..3231088afd73 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -1377,7 +1377,6 @@ static void __queue_work(int cpu, struct workqueue_struct *wq, */ WARN_ON_ONCE(!irqs_disabled()); - debug_work_activate(work); /* if draining, only works from the same workqueue are allowed */ if (unlikely(wq->flags & __WQ_DRAINING) && @@ -1460,6 +1459,7 @@ retry: worklist = &pwq->delayed_works; } + debug_work_activate(work); insert_work(pwq, work, worklist, work_flags); spin_unlock(&pwq->pool->lock);