Commit e6b4e1d7 authored by Changbin Du's avatar Changbin Du Committed by Andrii Nakryiko
Browse files

libbpf: Show error info about missing ".BTF" section 



Show the real problem instead of just saying "No such file or directory".

Now will print below info:
libbpf: failed to find '.BTF' ELF section in /home/changbin/work/linux/vmlinux
Error: failed to load BTF from /home/changbin/work/linux/vmlinux: No such file or directory

Signed-off-by: default avatarChangbin Du <changbin.du@gmail.com>
Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221217223509.88254-2-changbin.du@gmail.com
parent 1520e846

tools/lib/bpf/btf.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -1003,6 +1003,7 @@ static struct btf *btf_parse_elf(const char *path, struct btf *base_btf, 
	err = 0;

	err = 0;





	if (!btf_data) {

	if (!btf_data) {

		pr_warn("failed to find '%s' ELF section in %s\n", BTF_ELF_SEC, path);

		err = -ENOENT;

		err = -ENOENT;

		goto done;

		goto done;

	}

	}