From: Zqiang <qiang.zhang@windriver.com>
Date: Thu, 18 Feb 2021 03:16:49 +0000 (+0800)
Subject: workqueue: Move the position of debug_work_activate() in __queue_work()
X-Git-Tag: Ubuntu-5.4.0-74.83~136
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=06c119ce235b345882340fb55e70001322de8534;p=mirror_ubuntu-focal-kernel.git

workqueue: Move the position of debug_work_activate() in __queue_work()

BugLink: https://bugs.launchpad.net/bugs/1926489

[ 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@windriver.com>
Reviewed-by: Lai Jiangshan <jiangshanlai@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
---

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 29c36c029062..5d7092e32912 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -1411,7 +1411,6 @@ static void __queue_work(int cpu, struct workqueue_struct *wq,
 	 */
 	lockdep_assert_irqs_disabled();
 
-	debug_work_activate(work);
 
 	/* if draining, only works from the same workqueue are allowed */
 	if (unlikely(wq->flags & __WQ_DRAINING) &&
@@ -1493,6 +1492,7 @@ retry:
 		worklist = &pwq->delayed_works;
 	}
 
+	debug_work_activate(work);
 	insert_work(pwq, work, worklist, work_flags);
 
 out: