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libbpf: Fix memory leak in btf__dedup()

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Free btf_dedup if btf_ensure_modifiable() returns error.

Fixes: 919d2b1dbb ("libbpf: Allow modification of BTF and add btf__add_str API")
Signed-off-by: Mauricio Vásquez <mauricio@kinvolk.io>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211022202035.48868-1-mauricio@kinvolk.io
This commit is contained in:
Mauricio Vásquez 2021-10-22 15:20:35 -05:00 committed by Andrii Nakryiko
parent 57385ae31f
commit 1000298c76
1 changed files with 4 additions and 2 deletions
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6
tools/lib/bpf/btf.c
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@ -2991,8 +2991,10 @@ int btf__dedup(struct btf *btf, struct btf_ext *btf_ext,
return libbpf_err(-EINVAL);
}
if (btf_ensure_modifiable(btf))
return libbpf_err(-ENOMEM);
if (btf_ensure_modifiable(btf)) {
err = -ENOMEM;
goto done;
}
err = btf_dedup_prep(d);
if (err) {