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Subject: Re: [PATCH v1] selftests/xsk: Avoid use-after-free on ctx
From:   patchwork-bot+netdevbpf@kernel.org
Message-Id: <166212721597.8214.1758586217041951809.git-patchwork-notify@kernel.org>
Date:   Fri, 02 Sep 2022 14:00:15 +0000
References: <20220901202645.1463552-1-irogers@google.com>
In-Reply-To: <20220901202645.1463552-1-irogers@google.com>
To:     Ian Rogers <irogers@google.com>
Cc:     bjorn@kernel.org, magnus.karlsson@intel.com,
        maciej.fijalkowski@intel.com, jonathan.lemon@gmail.com,
        ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
        martin.lau@linux.dev, song@kernel.org, yhs@fb.com,
        john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com,
        haoluo@google.com, jolsa@kernel.org, mykolal@fb.com,
        shuah@kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org,
        linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org
Precedence: bulk

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Daniel Borkmann <daniel@iogearbox.net>:

On Thu,  1 Sep 2022 13:26:45 -0700 you wrote:
> The put lowers the reference count to 0 and frees ctx, reading it
> afterwards is invalid. Move the put after the uses and determine the
> last use by the reference count being 1.
> 
> Fixes: 39e940d4abfa ("selftests/xsk: Destroy BPF resources only when ctx refcount drops to 0")
> Signed-off-by: Ian Rogers <irogers@google.com>
> 
> [...]

Here is the summary with links:
  - [v1] selftests/xsk: Avoid use-after-free on ctx
    https://git.kernel.org/bpf/bpf-next/c/af515a5587b8

You are awesome, thank you!
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