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authorAndrii Nakryiko <andrii@kernel.org>2023-04-17 17:21:44 -0700
committerAlexei Starovoitov <ast@kernel.org>2023-04-18 12:45:10 -0700
commitf709160d1724a4be469b985dcaadaa2aa8d5ce94 (patch)
tree88fd7880080791f6d7891ae3b251c707308d8235 /tools
parent3055ddd654f65ebdd7860b4dfecd7e49e54c01b7 (diff)
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libbpf: report vmlinux vs module name when dealing with ksyms
Currently libbpf always reports "kernel" as a source of ksym BTF type, which is ambiguous given ksym's BTF can come from either vmlinux or kernel module BTFs. Make this explicit and log module name, if used BTF is from kernel module. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20230418002148.3255690-3-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools')
-rw-r--r--tools/lib/bpf/libbpf.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index a382ed3586bd..0a11563067b3 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -7538,8 +7538,9 @@ static int bpf_object__resolve_ksym_func_btf_id(struct bpf_object *obj,
ret = bpf_core_types_are_compat(obj->btf, local_func_proto_id,
kern_btf, kfunc_proto_id);
if (ret <= 0) {
- pr_warn("extern (func ksym) '%s': func_proto [%d] incompatible with kernel [%d]\n",
- ext->name, local_func_proto_id, kfunc_proto_id);
+ pr_warn("extern (func ksym) '%s': func_proto [%d] incompatible with %s [%d]\n",
+ ext->name, local_func_proto_id,
+ mod_btf ? mod_btf->name : "vmlinux", kfunc_proto_id);
return -EINVAL;
}
@@ -7573,8 +7574,8 @@ static int bpf_object__resolve_ksym_func_btf_id(struct bpf_object *obj,
* {kernel_btf_id, kernel_btf_obj_fd} -> fixup ld_imm64.
*/
ext->ksym.kernel_btf_obj_fd = mod_btf ? mod_btf->fd : 0;
- pr_debug("extern (func ksym) '%s': resolved to kernel [%d]\n",
- ext->name, kfunc_id);
+ pr_debug("extern (func ksym) '%s': resolved to %s [%d]\n",
+ ext->name, mod_btf ? mod_btf->name : "vmlinux", kfunc_id);
return 0;
}