MAX_VALUE_STR_LEN   19 tools/testing/selftests/bpf/progs/test_sysctl_loop1.c #define MAX_VALUE_STR_LEN (TCP_MEM_LOOPS * MAX_ULONG_STR_LEN)
MAX_VALUE_STR_LEN   19 tools/testing/selftests/bpf/progs/test_sysctl_loop2.c #define MAX_VALUE_STR_LEN (TCP_MEM_LOOPS * MAX_ULONG_STR_LEN)
MAX_VALUE_STR_LEN   16 tools/testing/selftests/bpf/progs/test_sysctl_prog.c #define MAX_VALUE_STR_LEN 0x40