netdev - Re: [PATCH 1/4] net: ll_temac: Make sure to free skb when it is completely used

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Date:   Fri, 18 Jun 2021 19:20:04 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Esben Haabendal <esben@...nix.com>
Cc:     netdev@...r.kernel.org, stable@...r.kernel.org,
        davem@...emloft.net, kuba@...nel.org, michal.simek@...inx.com,
        jesse.brandeburg@...el.com, wanghai38@...wei.com, andrew@...n.ch,
        zhangchangzhong@...wei.com, michael@...le.cc,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] net: ll_temac: Make sure to free skb when it is
 completely used

Hello:

This series was applied to netdev/net.git (refs/heads/master):

On Fri, 18 Jun 2021 12:52:23 +0200 you wrote:
> With the skb pointer piggy-backed on the TX BD, we have a simple and
> efficient way to free the skb buffer when the frame has been transmitted.
> But in order to avoid freeing the skb while there are still fragments from
> the skb in use, we need to piggy-back on the TX BD of the skb, not the
> first.
> 
> Without this, we are doing use-after-free on the DMA side, when the first
> BD of a multi TX BD packet is seen as completed in xmit_done, and the
> remaining BDs are still being processed.
> 
> [...]

Here is the summary with links:
  - [1/4] net: ll_temac: Make sure to free skb when it is completely used
    https://git.kernel.org/netdev/net/c/6aa32217a9a4
  - [2/4] net: ll_temac: Add memory-barriers for TX BD access
    https://git.kernel.org/netdev/net/c/28d9fab458b1
  - [3/4] net: ll_temac: Fix TX BD buffer overwrite
    https://git.kernel.org/netdev/net/c/c364df2489b8
  - [4/4] net: ll_temac: Avoid ndo_start_xmit returning NETDEV_TX_BUSY
    https://git.kernel.org/netdev/net/c/f63963411942

You are awesome, thank you!
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