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@xxxxxxxxxx> Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx> --- 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 4ffc8873d1ad..68c87aed8335 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -11605,7 +11605,7 @@ static int attach_kprobe_session(const struct bpf_program *prog, long cookie, spec = prog->sec_name + sizeof("kprobe.session/") - 1; n = sscanf(spec, "%m[a-zA-Z0-9_.*?]", &pattern); 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; } -- 2.44.0