From d2feaff9981ae6ca73b01cbd7ef16137d2557408 Mon Sep 17 00:00:00 2001
From: Vladimir Kobal <vlad@prokk.net>
Date: Thu, 30 Jul 2020 13:37:26 +0300
Subject: [PATCH] Skip probing for loading

---
 src/libbpf.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/libbpf.c b/src/libbpf.c
index a2338d1..79c6607 100644
--- a/src/libbpf.c
+++ b/src/libbpf.c
@@ -3330,6 +3330,10 @@ int bpf_map__resize(struct bpf_map *map, __u32 max_entries)
 static int
 bpf_object__probe_loading(struct bpf_object *obj)
 {
+	// Don't probe loading for very old kernels. CentOS 7 can't load this probe.
+	if (obj->kern_version <= KERNEL_VERSION(3, 10, 0))
+		return 0;
+
 	struct bpf_load_program_attr attr;
 	char *cp, errmsg[STRERR_BUFSIZE];
 	struct bpf_insn insns[] = {