From f2668a0a716738b616d8cfccc56409a049516b2c Mon Sep 17 00:00:00 2001 From: Tony Ambardar Date: Mon, 16 Sep 2024 01:37:42 -0700 Subject: [PATCH] libbpf: Fix output .symtab byte-order during linking Object linking output data uses the default ELF_T_BYTE type for '.symtab' section data, which disables any libelf-based translation. Explicitly set the ELF_T_SYM type for output to restore libelf's byte-order conversion, noting that input '.symtab' data is already correctly translated. Fixes: faf6ed321cf6 ("libbpf: Add BPF static linker APIs") Signed-off-by: Tony Ambardar Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/87868bfeccf3f51aec61260073f8778e9077050a.1726475448.git.tony.ambardar@gmail.com Signed-off-by: Alexei Starovoitov --- src/linker.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/linker.c b/src/linker.c index e0005c6..6985ab0 100644 --- a/src/linker.c +++ b/src/linker.c @@ -396,6 +396,8 @@ static int init_output_elf(struct bpf_linker *linker, const char *file) pr_warn_elf("failed to create SYMTAB data"); return -EINVAL; } + /* Ensure libelf translates byte-order of symbol records */ + sec->data->d_type = ELF_T_SYM; str_off = strset__add_str(linker->strtab_strs, sec->sec_name); if (str_off < 0)