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libbpf: Properly ignore STT_SECTION symbols in legacy map definitions
The previous patch to ignore STT_SECTION symbols only added the ignore condition in one of them. This fails if there's more than one map definition in the 'maps' section, because the subsequent modulus check will fail, resulting in error messages like: libbpf: elf: unable to determine legacy map definition size in ./xdpdump_xdp.o Fix this by also ignoring STT_SECTION in the first loop. Fixes: c3e8c44a9063 ("libbpf: Ignore STT_SECTION symbols in 'maps' section") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210929213837.832449-1-toke@redhat.com
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@ -1868,6 +1868,8 @@ static int bpf_object__init_user_maps(struct bpf_object *obj, bool strict)
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continue;
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if (sym.st_shndx != obj->efile.maps_shndx)
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continue;
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if (GELF_ST_TYPE(sym.st_info) == STT_SECTION)
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continue;
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nr_maps++;
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}
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/* Assume equally sized map definitions */
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