The patch titled
Subject: kthread: work could not be queued when worker being destroyed
has been added to the -mm tree. Its filename is
kthread-work-could-not-be-queued-when-worker-being-destroyed.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kthread-work-could-not-be-queued-when-worker-being-destroyed.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kthread-work-could-not-be-queued-when-worker-being-destroyed.patch
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------------------------------------------------------
From: Zhang Qiang <qiang.zhang@xxxxxxxxxxxxx>
Subject: kthread: work could not be queued when worker being destroyed
The "queuing_blocked" func should print warning message and returns true
when the worker being destroyed.
Link: http://lkml.kernel.org/r/20200702070156.5862-1-qiang.zhang@xxxxxxxxxxxxx
Signed-off-by: Zhang Qiang <qiang.zhang@xxxxxxxxxxxxx>
Suggested-by: Petr Mladek <pmladek@xxxxxxxx>
Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/kthread.c | 3 +++
1 file changed, 3 insertions(+)
--- a/kernel/kthread.c~kthread-work-could-not-be-queued-when-worker-being-destroyed
+++ a/kernel/kthread.c
@@ -814,6 +814,9 @@ static inline bool queuing_blocked(struc
{
lockdep_assert_held(&worker->lock);
+ if (WARN_ON(!worker->task))
+ return true;
+
return !list_empty(&work->node) || work->canceling;
}
_
Patches currently in -mm which might be from qiang.zhang@xxxxxxxxxxxxx are
kthread-work-could-not-be-queued-when-worker-being-destroyed.patch
