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libbpf: fix BPF_LOG_BUF_SIZE off-by-one error
The BPF_PROG_LOAD condition for kernel version <= 5.1 is log->len_total > UINT_MAX >> 8 /* (16 * 1024 * 1024) - 1 */ Signed-off-by: McCabe, Robert J <robert.mccabe@rockwellcollins.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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@ -92,7 +92,7 @@ struct bpf_load_program_attr {
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#define MAPS_RELAX_COMPAT 0x01
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/* Recommend log buffer size */
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#define BPF_LOG_BUF_SIZE (16 * 1024 * 1024) /* verifier maximum in kernels <= 5.1 */
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#define BPF_LOG_BUF_SIZE (UINT32_MAX >> 8) /* verifier maximum in kernels <= 5.1 */
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LIBBPF_API int
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bpf_load_program_xattr(const struct bpf_load_program_attr *load_attr,
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char *log_buf, size_t log_buf_sz);
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