Re: [PATCH v1] selftests/xsk: Avoid use-after-free on ctx

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

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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!