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authorStanislav Fomichev <sdf@google.com>2019-05-14 20:38:49 -0700
committerDaniel Borkmann <daniel@iogearbox.net>2019-05-16 01:32:19 +0200
commit15ea164ef11abc0a2d3001ca40e5e509cd06091f (patch)
tree07afe108034d75851b88732cafebbbfd2910c752
parent5db17c96771ffa735f5cdfbd9b44f52f319f2637 (diff)
downloadlinux-15ea164ef11abc0a2d3001ca40e5e509cd06091f.tar.bz2
libbpf: don't fail when feature probing fails
Otherwise libbpf is unusable from unprivileged process with kernel.kernel.unprivileged_bpf_disabled=1. All I get is EPERM from the probes, even if I just want to open an ELF object and look at what progs/maps it has. Instead of dying on probes, let's just pr_debug the error and try to continue. Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
-rw-r--r--tools/lib/bpf/libbpf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 7e3b79d7c25f..3562b6ef5fdc 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1696,7 +1696,7 @@ bpf_object__probe_caps(struct bpf_object *obj)
for (i = 0; i < ARRAY_SIZE(probe_fn); i++) {
ret = probe_fn[i](obj);
if (ret < 0)
- return ret;
+ pr_debug("Probe #%d failed with %d.\n", i, ret);
}
return 0;