linux-kernel - [PATCH v2 1/2] libbpf: Use probe

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Message-Id: <20211227130713.66933-1-wangqiang.wq.frank@bytedance.com>
Date:   Mon, 27 Dec 2021 21:07:12 +0800
From:   Qiang Wang <wangqiang.wq.frank@...edance.com>
To:     ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        kafai@...com, songliubraving@...com, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org, hengqi.chen@...il.com
Cc:     netdev@...r.kernel.org, bpf@...r.kernel.org,
        linux-kernel@...r.kernel.org, zhouchengming@...edance.com,
        songmuchun@...edance.com, duanxiongchun@...edance.com,
        shekairui@...edance.com,
        Qiang Wang <wangqiang.wq.frank@...edance.com>
Subject: [PATCH v2 1/2] libbpf: Use probe_name for legacy kprobe

Fix a bug in commit 46ed5fc33db9, which wrongly used the
func_name instead of probe_name to register legacy kprobe.

Fixes: 46ed5fc33db9 ("libbpf: Refactor and simplify legacy kprobe code")
Reviewed-by: Hengqi Chen <hengqi.chen@...il.com>
Tested-by: Hengqi Chen <hengqi.chen@...il.com>
Co-developed-by: Chengming Zhou <zhouchengming@...edance.com>
Signed-off-by: Qiang Wang <wangqiang.wq.frank@...edance.com>
Signed-off-by: Chengming Zhou <zhouchengming@...edance.com>
---
 tools/lib/bpf/libbpf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 7c74342bb668..b7d6c951fa09 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -9735,7 +9735,7 @@ bpf_program__attach_kprobe_opts(const struct bpf_program *prog,
 		gen_kprobe_legacy_event_name(probe_name, sizeof(probe_name),
 					     func_name, offset);
 
-		legacy_probe = strdup(func_name);
+		legacy_probe = strdup(probe_name);
 		if (!legacy_probe)
 			return libbpf_err_ptr(-ENOMEM);
 
-- 
2.20.1