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libbpf: Fix error message in attach_kprobe_session

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We just failed to retrieve pattern, so we need to print spec instead.

Fixes: 2ca178f02b2f ("libbpf: Add support for kprobe session attach")
Reported-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240502075541.1425761-1-jolsa@kernel.org
This commit is contained in:
Jiri Olsa
2024-05-02 09:55:40 +02:00
committed by Andrii Nakryiko
parent e055420033
commit d045f7682b
1 changed files with 1 additions and 1 deletions
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src/libbpf.c
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@@ -11605,7 +11605,7 @@ static int attach_kprobe_session(const struct bpf_program *prog, long cookie,
spec = prog->sec_name + sizeof("kprobe.session/") - 1; spec = prog->sec_name + sizeof("kprobe.session/") - 1;
n = sscanf(spec, "%m[a-zA-Z0-9_.*?]", &pattern); n = sscanf(spec, "%m[a-zA-Z0-9_.*?]", &pattern);
if (n < 1) { if (n < 1) {
pr_warn("kprobe session pattern is invalid: %s\n", pattern); pr_warn("kprobe session pattern is invalid: %s\n", spec);
return -EINVAL; return -EINVAL;
} }