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Mykyta Yatsenko
4ea184df98
init_arena_map_data() used the build-host page size while it opened an object. This could reject skeleton generation when the build host and target use different page sizes. Validate the size during load, before libbpf calculates the arena data offset. This uses the running kernel page size and rejects an undersized map before relocation. This problem manifested when cross compiling BPF selftests for arm64 (64K page) on x86 (4K page). In this setup skeleton generation fails. Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> Link: https://lore.kernel.org/bpf/20260908-libbpf_arena_thing-v1-1-0092c0e0d91b@meta.com