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[bpf,v2,2/4] libbpf: Fix return zero when elf_begin failed

Message ID 20250115100241.4171581-2-pulehui@huaweicloud.com (mailing list archive)
State New
Delegated to: BPF
Headers show
Series [bpf,v2,1/4] selftests/bpf: Fix btf leak on new btf alloc failure in btf_distill test | expand

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Commit Message

Pu Lehui Jan. 15, 2025, 10:02 a.m. UTC 
From: Pu Lehui <pulehui@huawei.com>

The error number of elf_begin is omitted when encapsulating the
btf_find_elf_sections function.

Fixes: c86f180ffc99 ("libbpf: Make btf_parse_elf process .BTF.base transparently")
Signed-off-by: Pu Lehui <pulehui@huawei.com>
---
 tools/lib/bpf/btf.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c
index 12468ae0d573..7e810fa468ea 100644
--- a/tools/lib/bpf/btf.c
+++ b/tools/lib/bpf/btf.c
@@ -1186,6 +1186,7 @@  static struct btf *btf_parse_elf(const char *path, struct btf *base_btf,
 
 	elf = elf_begin(fd, ELF_C_READ, NULL);
 	if (!elf) {
+		err = -LIBBPF_ERRNO__FORMAT;
 		pr_warn("failed to open %s as ELF file\n", path);
 		goto done;
 	}