MAX_ULONG_STR_LEN   18 tools/testing/selftests/bpf/progs/test_sysctl_loop1.c #define MAX_ULONG_STR_LEN 7
MAX_ULONG_STR_LEN   18 tools/testing/selftests/bpf/progs/test_sysctl_loop2.c #define MAX_ULONG_STR_LEN 7
MAX_ULONG_STR_LEN   13 tools/testing/selftests/bpf/progs/test_sysctl_prog.c #define MAX_ULONG_STR_LEN 0xF