linux-kernel - [PATCH v4a 28/38] timers: workqueue: Use timer_shutdown

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Message-ID: <20221105060159.989028673@goodmis.org>
Date:   Sat, 05 Nov 2022 02:00:52 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     linux-kernel@...r.kernel.org
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Stephen Boyd <sboyd@...nel.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Anna-Maria Gleixner <anna-maria@...utronix.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Tejun Heo <tj@...nel.org>,
        Lai Jiangshan <jiangshanlai@...il.com>
Subject: [PATCH v4a 28/38] timers: workqueue: Use timer_shutdown_sync() before freeing timer

From: "Steven Rostedt (Google)" <rostedt@...dmis.org>

Before a timer is freed, timer_shutdown_sync() must be called.

Link: https://lore.kernel.org/all/20221104054053.431922658@goodmis.org/

Cc: Tejun Heo <tj@...nel.org>
Cc: Lai Jiangshan <jiangshanlai@...il.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
---
 kernel/workqueue.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 7cd5f5e7e0a1..2bbea15be4c8 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -3608,8 +3608,8 @@ static void put_unbound_pool(struct worker_pool *pool)
 		wait_for_completion(pool->detach_completion);
 
 	/* shut down the timers */
-	del_timer_sync(&pool->idle_timer);
-	del_timer_sync(&pool->mayday_timer);
+	timer_shutdown_sync(&pool->idle_timer);
+	timer_shutdown_sync(&pool->mayday_timer);
 
 	/* RCU protected to allow dereferences from get_work_pool() */
 	call_rcu(&pool->rcu, rcu_free_pool);
-- 
2.35.1