netdev - Re: [PATCH bpf-next v2] af_unix: fix NULL pointer bug in unix

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Date:   Mon, 23 Aug 2021 13:00:06 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Jiang Wang <jiang.wang@...edance.com>
Cc:     bpf@...r.kernel.org, cong.wang@...edance.com,
        duanxiongchun@...edance.com, xieyongji@...edance.com,
        chaiwen.cc@...edance.com, kuniyu@...zon.co.jp, digetx@...il.com,
        davem@...emloft.net, kuba@...nel.org, ast@...nel.org,
        daniel@...earbox.net, andrii@...nel.org, kafai@...com,
        songliubraving@...com, yhs@...com, john.fastabend@...il.com,
        kpsingh@...nel.org, viro@...iv.linux.org.uk,
        christian.brauner@...ntu.com, rao.shoaib@...cle.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH bpf-next v2] af_unix: fix NULL pointer bug in unix_shutdown

Hello:

This patch was applied to bpf/bpf-next.git (refs/heads/master):

On Sat, 21 Aug 2021 18:07:36 +0000 you wrote:
> Commit 94531cfcbe79 ("af_unix: Add unix_stream_proto for sockmap")
> introduced a bug for af_unix SEQPACKET type. In unix_shutdown, the
> unhash function will call prot->unhash(), which is NULL for SEQPACKET.
> And kernel will panic. On ARM32, it will show following messages: (it
> likely affects x86 too).
> 
> Fix the bug by checking the prot->unhash is NULL or not first.
> 
> [...]

Here is the summary with links:
  - [bpf-next,v2] af_unix: fix NULL pointer bug in unix_shutdown
    https://git.kernel.org/bpf/bpf-next/c/d359902d5c35

You are awesome, thank you!
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