netdev - Re: [PATCH] netdevsim: Fix memory leak of nsim_dev->fa

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Date:   Mon, 14 Nov 2022 20:48:39 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     wangyufen <wangyufen@...wei.com>
Cc:     <netdev@...r.kernel.org>, <davem@...emloft.net>,
        <edumazet@...gle.com>, <pabeni@...hat.com>,
        Jiri Pirko <jiri@...lanox.com>
Subject: Re: [PATCH] netdevsim: Fix memory leak of nsim_dev->fa_cookie

On Tue, 15 Nov 2022 11:38:26 +0800 wangyufen wrote:
> Sorry, I didn't make it clear.
> 
> The detailed process of nsim_dev_trap_report_work() is as follows:
> 
> nsim_dev_trap_report_work()
>    nsim_dev_trap_report_work()
>      ...
>      devlink_trap_report()
>        devlink_trap_report_metadata_set()
>        <-- fa_cookie is assigned to metadata->fa_cookie here， and will be freed in net_dm_hw_metadata_free()

What's assigned here and freed in net_dm_hw_metadata_free() is a copy
made with net_dm_hw_metadata_copy(), no?  
Could you double check the whole path?