linux-kernel - Re: [PATCH] can: m_can: fix a possible use after free in m_can_tx

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Message-ID: <20220317081148.rdnacm4bry76rny4@pengutronix.de>
Date:   Thu, 17 Mar 2022 09:11:48 +0100
From:   Marc Kleine-Budde <mkl@...gutronix.de>
To:     Hangyu Hua <hbh25y@...il.com>
Cc:     rcsekar@...sung.com, wg@...ndegger.com, davem@...emloft.net,
        kuba@...nel.org, linux-can@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] can: m_can: fix a possible use after free in
 m_can_tx_handler()

On 17.03.2022 11:01:43, Hangyu Hua wrote:
> can_put_echo_skb will clone skb then free the skb. It is better to avoid using
> skb after can_put_echo_skb.

Why not move the can_put_echo_skb() instead? I'll send a patch.

Marc

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Pengutronix e.K.                 | Marc Kleine-Budde           |
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