linux-kernel - Re: [PATCH] ethernet/netronome/nfp: Fix a use after free in nfp_bpf_ctrl_msg

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Date:   Tue, 30 Mar 2021 00:30:08 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Lv Yunlong <lyl2019@...l.ustc.edu.cn>
Cc:     kuba@...nel.org, simon.horman@...ronome.com, davem@...emloft.net,
        ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        kafai@...com, songliubraving@...com, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org,
        netdev@...r.kernel.org, bpf@...r.kernel.org,
        oss-drivers@...ronome.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ethernet/netronome/nfp: Fix a use after free in
 nfp_bpf_ctrl_msg_rx

Hello:

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

On Mon, 29 Mar 2021 04:50:02 -0700 you wrote:
> In nfp_bpf_ctrl_msg_rx, if
> nfp_ccm_get_type(skb) == NFP_CCM_TYPE_BPF_BPF_EVENT is true, the skb
> will be freed. But the skb is still used by nfp_ccm_rx(&bpf->ccm, skb).
> 
> My patch adds a return when the skb was freed.
> 
> Fixes: bcf0cafab44fd ("nfp: split out common control message handling code")
> Signed-off-by: Lv Yunlong <lyl2019@...l.ustc.edu.cn>
> 
> [...]

Here is the summary with links:
  - ethernet/netronome/nfp: Fix a use after free in nfp_bpf_ctrl_msg_rx
    https://git.kernel.org/netdev/net/c/6e5a03bcba44

You are awesome, thank you!
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