Switching to libbpf 1.0 API broke test_sock and test_sysctl as they
check for return of bpf_prog_attach to be exactly -1. Switch the check
to '< 0' instead.
Fixes: b858ba8c52b6 ("selftests/bpf: Use libbpf 1.0 API mode instead of RLIMIT_MEMLOCK")
Signed-off-by: Artem Savkov <asavkov@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Yafang Shao <laoar.shao@gmail.com>
Link: https://lore.kernel.org/bpf/20220421130104.1582053-1-asavkov@redhat.com
 
                        goto err;
        }
 
-       if (attach_sock_prog(cgfd, progfd, test->attach_type) == -1) {
+       if (attach_sock_prog(cgfd, progfd, test->attach_type) < 0) {
                if (test->result == ATTACH_REJECT)
                        goto out;
                else
 
                        goto err;
        }
 
-       if (bpf_prog_attach(progfd, cgfd, atype, BPF_F_ALLOW_OVERRIDE) == -1) {
+       if (bpf_prog_attach(progfd, cgfd, atype, BPF_F_ALLOW_OVERRIDE) < 0) {
                if (test->result == ATTACH_REJECT)
                        goto out;
                else