Re: [PATCH v3 bpf-next] selftests/bpf: Fix the issue where the error code is 0

Hello:

This patch was applied to bpf/bpf-next.git (master) by Martin KaFai Lau martin.lau@kernel.org:

On Mon, 8 Sep 2025 14:08:10 +0800 you wrote:

From: Feng Yang yangfeng@kylinos.cn

The error message printed here only uses the previous err value, which results in it being printed as 0. When bpf_map__attach_struct_ops encounters an error, it uses libbpf_err_ptr(err) to set errno = -err and returns NULL. Therefore, Using -errno can fix this issue.

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Here is the summary with links: - [v3,bpf-next] selftests/bpf: Fix the issue where the error code is 0 https://git.kernel.org/bpf/bpf-next/c/93a83d044314

You are awesome, thank you!