Hello:
This patch was applied to bpf/bpf-next.git (master)
by Martin KaFai Lau <martin.lau@xxxxxxxxxx>:
On Thu, 25 Jan 2024 18:31:13 -0800 you wrote:
> From: Kui-Feng Lee <thinker.li@xxxxxxxxx>
>
> Check whether the returned pointer is NULL. Previously, it was assumed that
> an error code would be returned if BTF is not available or fails to
> parse. However, it actually returns NULL if BTF is disabled.
>
> In the function check_struct_ops_btf_id(), we have stopped using
> btf_vmlinux as a backup because attach_btf is never null when attach_btf_id
> is set. However, the function test_libbpf_probe_prog_types() in
> libbpf_probes.c does not set both attach_btf_obj_fd and attach_btf_id,
> resulting in attach_btf being null, and it expects ENOTSUPP as a
> result. So, if attach_btf_id is not set, it will return ENOTSUPP.
>
> [...]
Here is the summary with links:
- [bpf-next,v2] bpf: Fix error checks against bpf_get_btf_vmlinux().
https://git.kernel.org/bpf/bpf-next/c/e6be8cd5d3cf
You are awesome, thank you!
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