When running `bpftool` on a kernel module installed in `/lib/modules...`, this error is encountered if the user does not specify `--base-btf` to point to a valid base BTF (e.g. usually in `/sys/kernel/btf/vmlinux`). However, looking at the debug output to determine the cause of the error simply says `Invalid BTF string section`, which does not point to the actual source of the error. This just improves that debug message to tell users what happened. Signed-off-by: Ben Olson <matthew.olson@xxxxxxxxx> --- tools/lib/bpf/btf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c index 12468ae0d573..1a17de9d99e6 100644 --- a/tools/lib/bpf/btf.c +++ b/tools/lib/bpf/btf.c @@ -283,7 +283,7 @@ static int btf_parse_str_sec(struct btf *btf) return -EINVAL; } if (!btf->base_btf && start[0]) { - pr_debug("Invalid BTF string section\n"); + pr_debug("Cannot find base BTF\n"); return -EINVAL; } return 0; -- 2.47.0