linux-kernel - Re: [PATCH 1/1] nfc: nfcmrvl: Fix memory leak in nfcmrvl_play

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Date:   Tue, 7 Jun 2022 14:44:48 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Xiaohui Zhang <xiaohuizhang@....edu.cn>,
        "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] nfc: nfcmrvl: Fix memory leak in
 nfcmrvl_play_deferred

On 07/06/2022 10:32, Xiaohui Zhang wrote:
> Similar to the handling of play_deferred in commit 19cfe912c37b
> ("Bluetooth: btusb: Fix memory leak in play_deferred"), we thought
> a patch might be needed here as well.
> 
> Currently usb_submit_urb is called directly to submit deferred tx
> urbs after unanchor them.
> 
> So the usb_giveback_urb_bh would failed to unref it in usb_unanchor_urb
> and cause memory leak.
> 
> Put those urbs in tx_anchor to avoid the leak, and also fix the error
> handling.
> 
> Signed-off-by: Xiaohui Zhang <xiaohuizhang@....edu.cn>


Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>


Best regards,
Krzysztof