linux-kernel - [PATCH] workqueue: Fix double kfree for rescuer

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Message-ID: <20200525075901.12699-1-qiang.zhang@windriver.com>
Date:   Mon, 25 May 2020 15:59:01 +0800
From:   <qiang.zhang@...driver.com>
To:     <tj@...nel.org>
CC:     <jiangshanlai@...il.com>, <markus.elfring@....de>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] workqueue: Fix double kfree for rescuer

From: Zhang Qiang <qiang.zhang@...driver.com>

The duplicate memory release should be deleted from the implementation
of the callback function "rcu_free_wq".

Fixes: 6ba94429c8e7 ("workqueue: Reorder sysfs code")
Signed-off-by: Zhang Qiang <qiang.zhang@...driver.com>
---
 kernel/workqueue.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 891ccad5f271..a2451cdcd503 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -3491,7 +3491,6 @@ static void rcu_free_wq(struct rcu_head *rcu)
 	else
 		free_workqueue_attrs(wq->unbound_attrs);
 
-	kfree(wq->rescuer);
 	kfree(wq);
 }
 
-- 
2.24.1