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libbpf: Skip BTF fixup if object file has no BTF

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Skip BTF fixup step when input object file is missing BTF altogether.

Fixes: 8fd27bf69b86 ("libbpf: Add BPF static linker BTF and BTF.ext support")
Reported-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/bpf/20210319205909.1748642-3-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko
2021-03-19 13:59:08 -07:00
committed by Andrii Nakryiko
parent 7b1f3e310b
commit d4d3a88b5a
1 changed files with 3 additions and 0 deletions
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3
src/linker.c
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@@ -1313,6 +1313,9 @@ static int linker_fixup_btf(struct src_obj *obj)
struct src_sec *sec; struct src_sec *sec;
int i, j, n, m; int i, j, n, m;
if (!obj->btf)
return 0;
n = btf__get_nr_types(obj->btf); n = btf__get_nr_types(obj->btf);
for (i = 1; i <= n; i++) { for (i = 1; i <= n; i++) {
struct btf_var_secinfo *vi; struct btf_var_secinfo *vi;