From b0024a04e48837b6556a080ff37ecd8351632596 Mon Sep 17 00:00:00 2001
From: Taehee Yoo <ap420073@gmail.com>
Date: Tue, 16 Nov 2021 16:09:23 +0000
Subject: [PATCH] amt: cancel delayed_work synchronously in amt_fini()
When the amt module is being removed, it calls cancel_delayed_work()
to cancel pending delayed_work. But this function doesn't wait for
canceling delayed_work.
So, workers can be still doing after module delete.
In order to avoid this, cancel_delayed_work_sync() should be used instead.
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Fixes: bc54e49c140b ("amt: add multicast(IGMP) report message handler")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Link: https://lore.kernel.org/r/20211116160923.25258-1-ap420073@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/amt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/amt.c b/drivers/net/amt.c
index 47a04c330885e..b732ee9a50ef9 100644
--- a/drivers/net/amt.c
+++ b/drivers/net/amt.c
@@ -3286,7 +3286,7 @@ static void __exit amt_fini(void)
{
rtnl_link_unregister(&amt_link_ops);
unregister_netdevice_notifier(&amt_notifier_block);
- cancel_delayed_work(&source_gc_wq);
+ cancel_delayed_work_sync(&source_gc_wq);
__amt_source_gc_work();
destroy_workqueue(amt_wq);
}
--
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