linux-kernel - [PATCH 5.16 0378/1039] libbpf: Use probe

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Date:   Mon, 24 Jan 2022 19:36:07 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Qiang Wang <wangqiang.wq.frank@...edance.com>,
        Chengming Zhou <zhouchengming@...edance.com>,
        Andrii Nakryiko <andrii@...nel.org>,
        Hengqi Chen <hengqi.chen@...il.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.16 0378/1039] libbpf: Use probe_name for legacy kprobe

From: Qiang Wang <wangqiang.wq.frank@...edance.com>

[ Upstream commit 71cff670baff5cc6a6eeb0181e2cc55579c5e1e0 ]

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")
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>
Signed-off-by: Andrii Nakryiko <andrii@...nel.org>
Tested-by: Hengqi Chen <hengqi.chen@...il.com>
Reviewed-by: Hengqi Chen <hengqi.chen@...il.com>
Link: https://lore.kernel.org/bpf/20211227130713.66933-1-wangqiang.wq.frank@bytedance.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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 fd25e30e70cc2..2696f0b7f0acc 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -9769,7 +9769,7 @@ 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);
 
-- 
2.34.1