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From: Tao Chen <chen.dylane@linux.dev>
To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
	eddyz87@gmail.com, haoluo@google.com, jolsa@kernel.org,
	qmo@kernel.org
Cc: bpf@vger.kernel.org, linux-kernel@vger.kernel.org,
	chen.dylane@gmail.com, Tao Chen <chen.dylane@linux.dev>
Subject: [PATCH bpf-next v8 4/5] libbpf: Init kprobe prog expected_attach_type for kfunc probe
Date: Tue, 25 Feb 2025 00:59:11 +0800	[thread overview]
Message-ID: <20250224165912.599068-5-chen.dylane@linux.dev> (raw)
In-Reply-To: <20250224165912.599068-1-chen.dylane@linux.dev>

Kprobe prog type kfuncs like bpf_session_is_return and
bpf_session_cookie will check the expected_attach_type,
so init the expected_attach_type here.

Signed-off-by: Tao Chen <chen.dylane@linux.dev>
---
 tools/lib/bpf/libbpf_probes.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/lib/bpf/libbpf_probes.c b/tools/lib/bpf/libbpf_probes.c
index 8efebc18a215..bb5b457ddc80 100644
--- a/tools/lib/bpf/libbpf_probes.c
+++ b/tools/lib/bpf/libbpf_probes.c
@@ -126,6 +126,7 @@ static int probe_prog_load(enum bpf_prog_type prog_type,
 		break;
 	case BPF_PROG_TYPE_KPROBE:
 		opts.kern_version = get_kernel_version();
+		opts.expected_attach_type = BPF_TRACE_KPROBE_SESSION;
 		break;
 	case BPF_PROG_TYPE_LIRC_MODE2:
 		opts.expected_attach_type = BPF_LIRC_MODE2;
-- 
2.43.0


  parent reply	other threads:[~2025-02-24 17:02 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-24 16:59 [PATCH bpf-next v8 0/5] Add prog_kfunc feature probe Tao Chen
2025-02-24 16:59 ` [PATCH bpf-next v8 1/5] libbpf: Extract prog load type check from libbpf_probe_bpf_helper Tao Chen
2025-02-24 16:59 ` [PATCH bpf-next v8 2/5] libbpf: Init fd_array when prog probe load Tao Chen
2025-02-24 16:59 ` [PATCH bpf-next v8 3/5] libbpf: Add libbpf_probe_bpf_kfunc API Tao Chen
2025-02-25  1:15   ` Andrii Nakryiko
2025-02-25  5:47     ` Tao Chen
2025-02-25 17:01       ` Andrii Nakryiko
2025-02-24 16:59 ` Tao Chen [this message]
2025-02-25  1:15   ` [PATCH bpf-next v8 4/5] libbpf: Init kprobe prog expected_attach_type for kfunc probe Andrii Nakryiko
2025-02-25  5:44     ` Tao Chen
2025-02-25 17:04       ` Andrii Nakryiko
2025-02-26 11:12         ` Jiri Olsa
2025-02-26 16:10           ` Tao Chen
2025-02-24 16:59 ` [PATCH bpf-next v8 5/5] selftests/bpf: Add libbpf_probe_bpf_kfunc API selftests Tao Chen
2025-02-24 17:13 ` [PATCH bpf-next v8 0/5] Add prog_kfunc feature probe Tao Chen
2025-02-25  1:28   ` Eduard Zingerman

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