From d7a2de020bfd5cf6bc5112f8bae0d64203d60d6a Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Wed, 21 Jul 2021 23:58:09 +0200 Subject: [PATCH] libbpf: Allow decimal offset for kprobes Allow to specify decimal offset in SEC macro, like: SEC("kprobe/bpf_fentry_test7+5") Add selftest for that. Suggested-by: Andrii Nakryiko Signed-off-by: Jiri Olsa Signed-off-by: Andrii Nakryiko Reviewed-by: Alan Maguire Tested-by: Alan Maguire Link: https://lore.kernel.org/bpf/20210721215810.889975-3-jolsa@kernel.org --- src/libbpf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/libbpf.c b/src/libbpf.c index d46c2dd..52f4f1d 100644 --- a/src/libbpf.c +++ b/src/libbpf.c @@ -10424,7 +10424,7 @@ static struct bpf_link *attach_kprobe(const struct bpf_sec_def *sec, func_name = prog->sec_name + sec->len; opts.retprobe = strcmp(sec->sec, "kretprobe/") == 0; - n = sscanf(func_name, "%m[a-zA-Z0-9_.]+%lx", &func, &offset); + n = sscanf(func_name, "%m[a-zA-Z0-9_.]+%li", &func, &offset); if (n < 1) { err = -EINVAL; pr_warn("kprobe name is invalid: %s\n", func_name);