netdev - Re: [PATCH net] can: raw: fix receiver memory leak

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Message-ID: <2a035aab-d10a-bb6f-d056-ea93c454a51d@hartkopp.net>
Date: Thu, 6 Jul 2023 20:29:05 +0200
From: Oliver Hartkopp <socketcan@...tkopp.net>
To: "Ziyang Xuan (William)" <william.xuanziyang@...wei.com>,
 mkl@...gutronix.de, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com, linux-can@...r.kernel.org,
 netdev@...r.kernel.org, penguin-kernel@...ove.SAKURA.ne.jp
Subject: Re: [PATCH net] can: raw: fix receiver memory leak

On 06.07.23 14:48, Ziyang Xuan (William) wrote:

(..)

>>>        }
>>>       out:
>>>        release_sock(sk);
>>> +    rtnl_unlock();
>>
>> Would it also fix the issue when just adding the rtnl_locks to raw_bind() and raw_release() as suggested by you?
> 
> This patch just add rtnl_lock in raw_bind() and raw_release(). raw_setsockopt() has rtnl_lock before this. raw_notify()
> is under rtnl_lock. My patch has been tested and solved the issue before send. I don't know if it answered your doubts.

My question was whether adding rtnl_locks to raw_bind() and 
raw_release() would be enough to fix the issue.

Without introducing the additional ro->dev element!?

Best regards,
Oliver